/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_copy9_ground-2.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-d966a43
[2022-01-31 17:23:55,727 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-01-31 17:23:55,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-31 17:23:55,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-31 17:23:55,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-31 17:23:55,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-31 17:23:55,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-31 17:23:55,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-31 17:23:55,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-31 17:23:55,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-31 17:23:55,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-01-31 17:23:55,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-31 17:23:55,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-31 17:23:55,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-31 17:23:55,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-31 17:23:55,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-31 17:23:55,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-31 17:23:55,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-31 17:23:55,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-31 17:23:55,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-31 17:23:55,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-31 17:23:55,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-31 17:23:55,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-01-31 17:23:55,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-31 17:23:55,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-31 17:23:55,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-31 17:23:55,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-31 17:23:55,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-31 17:23:55,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-31 17:23:55,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-31 17:23:55,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-31 17:23:55,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-31 17:23:55,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-31 17:23:55,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-31 17:23:55,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-31 17:23:55,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2022-01-31 17:23:55,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-31 17:23:55,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-01-31 17:23:55,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2022-01-31 17:23:55,831 INFO L113 SettingsManager]: Loading preferences was successful
[2022-01-31 17:23:55,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-31 17:23:55,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-31 17:23:55,832 INFO L138 SettingsManager]: * sizeof long=4
[2022-01-31 17:23:55,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-01-31 17:23:55,832 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-01-31 17:23:55,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-01-31 17:23:55,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-01-31 17:23:55,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-31 17:23:55,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-01-31 17:23:55,833 INFO L138 SettingsManager]: * sizeof long double=12
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-01-31 17:23:55,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 17:23:55,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-01-31 17:23:55,834 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-31 17:23:55,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-31 17:23:56,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-31 17:23:56,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-31 17:23:56,014 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-01-31 17:23:56,015 INFO L275 PluginConnector]: CDTParser initialized
[2022-01-31 17:23:56,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i
[2022-01-31 17:23:56,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bdc9fe4/7c94e29bd5ef4917ad3f2f7092aa0917/FLAG963cb010f
[2022-01-31 17:23:56,412 INFO L306 CDTParser]: Found 1 translation units.
[2022-01-31 17:23:56,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i
[2022-01-31 17:23:56,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bdc9fe4/7c94e29bd5ef4917ad3f2f7092aa0917/FLAG963cb010f
[2022-01-31 17:23:56,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bdc9fe4/7c94e29bd5ef4917ad3f2f7092aa0917
[2022-01-31 17:23:56,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-31 17:23:56,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-01-31 17:23:56,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-31 17:23:56,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-31 17:23:56,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-31 17:23:56,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@becaac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56, skipping insertion in model container
[2022-01-31 17:23:56,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-01-31 17:23:56,446 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-01-31 17:23:56,528 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_copy9_ground-2.i[816,829]
[2022-01-31 17:23:56,575 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 17:23:56,579 INFO L203 MainTranslator]: Completed pre-run
[2022-01-31 17:23:56,590 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_copy9_ground-2.i[816,829]
[2022-01-31 17:23:56,598 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 17:23:56,606 INFO L208 MainTranslator]: Completed translation
[2022-01-31 17:23:56,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56 WrapperNode
[2022-01-31 17:23:56,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-31 17:23:56,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-31 17:23:56,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-31 17:23:56,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-01-31 17:23:56,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-31 17:23:56,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-31 17:23:56,632 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-01-31 17:23:56,632 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-01-31 17:23:56,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56" (1/1) ...
[2022-01-31 17:23:56,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 17:23:56,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 17:23:56,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-31 17:23:56,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-31 17:23:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-01-31 17:23:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-31 17:23:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-01-31 17:23:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-31 17:23:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-01-31 17:23:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-01-31 17:23:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-01-31 17:23:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2022-01-31 17:23:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2022-01-31 17:23:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-01-31 17:23:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-31 17:23:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-31 17:23:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-01-31 17:23:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-01-31 17:23:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-31 17:23:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-01-31 17:23:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-01-31 17:23:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-31 17:23:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-01-31 17:23:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-31 17:23:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-31 17:23:56,736 INFO L234 CfgBuilder]: Building ICFG
[2022-01-31 17:23:56,737 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-31 17:23:56,913 INFO L275 CfgBuilder]: Performing block encoding
[2022-01-31 17:23:56,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-31 17:23:56,917 INFO L299 CfgBuilder]: Removed 11 assume(true) statements.
[2022-01-31 17:23:56,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:23:56 BoogieIcfgContainer
[2022-01-31 17:23:56,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-31 17:23:56,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-31 17:23:56,919 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-01-31 17:23:56,928 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-01-31 17:23:56,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:23:56" (1/3) ...
[2022-01-31 17:23:56,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54398ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:23:56, skipping insertion in model container
[2022-01-31 17:23:56,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:56" (2/3) ...
[2022-01-31 17:23:56,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54398ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:23:56, skipping insertion in model container
[2022-01-31 17:23:56,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:23:56" (3/3) ...
[2022-01-31 17:23:56,930 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-2.i
[2022-01-31 17:23:56,933 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-01-31 17:23:56,933 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-31 17:23:56,973 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-31 17:23:56,977 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN
[2022-01-31 17:23:56,977 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-31 17:23:56,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 43 states have (on average 1.558139534883721) internal successors, (67), 44 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 17:23:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-01-31 17:23:56,992 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:56,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:56,992 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:56,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1832977551, now seen corresponding path program 1 times
[2022-01-31 17:23:57,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382246881]
[2022-01-31 17:23:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:57,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:57,048 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:57,175 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:57,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382246881]
[2022-01-31 17:23:57,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1382246881] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:57,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:57,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-31 17:23:57,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454506363]
[2022-01-31 17:23:57,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:57,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-31 17:23:57,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-31 17:23:57,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 17:23:57,198 INFO L87 Difference]: Start difference. First operand has 51 states, 43 states have (on average 1.558139534883721) internal successors, (67), 44 states have internal predecessors, (67), 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 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:57,239 INFO L93 Difference]: Finished difference Result 94 states and 137 transitions.
[2022-01-31 17:23:57,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-01-31 17:23:57,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31
[2022-01-31 17:23:57,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:57,249 INFO L225 Difference]: With dead ends: 94
[2022-01-31 17:23:57,249 INFO L226 Difference]: Without dead ends: 46
[2022-01-31 17:23:57,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 17:23:57,254 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 52 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:57,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 63 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:23:57,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2022-01-31 17:23:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2022-01-31 17:23:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:57,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions.
[2022-01-31 17:23:57,290 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 31
[2022-01-31 17:23:57,291 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:57,291 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions.
[2022-01-31 17:23:57,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,291 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions.
[2022-01-31 17:23:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-01-31 17:23:57,293 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:57,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:57,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-31 17:23:57,294 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2011732013, now seen corresponding path program 1 times
[2022-01-31 17:23:57,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393830490]
[2022-01-31 17:23:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:57,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:57,304 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:57,378 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:57,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393830490]
[2022-01-31 17:23:57,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [393830490] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:57,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:57,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 17:23:57,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922808348]
[2022-01-31 17:23:57,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:57,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 17:23:57,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 17:23:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 17:23:57,380 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:57,468 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions.
[2022-01-31 17:23:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 17:23:57,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31
[2022-01-31 17:23:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:57,470 INFO L225 Difference]: With dead ends: 86
[2022-01-31 17:23:57,470 INFO L226 Difference]: Without dead ends: 48
[2022-01-31 17:23:57,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 17:23:57,472 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 51 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:57,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 60 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2022-01-31 17:23:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47.
[2022-01-31 17:23:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions.
[2022-01-31 17:23:57,478 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 31
[2022-01-31 17:23:57,478 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:57,478 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions.
[2022-01-31 17:23:57,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions.
[2022-01-31 17:23:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-31 17:23:57,479 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:57,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:57,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-31 17:23:57,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash 901965809, now seen corresponding path program 1 times
[2022-01-31 17:23:57,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146055694]
[2022-01-31 17:23:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:57,492 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:57,492 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:57,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:57,494 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:57,550 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:57,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146055694]
[2022-01-31 17:23:57,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [146055694] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:57,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:57,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-31 17:23:57,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77315804]
[2022-01-31 17:23:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:57,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 17:23:57,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 17:23:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-31 17:23:57,552 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:57,656 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions.
[2022-01-31 17:23:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-01-31 17:23:57,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33
[2022-01-31 17:23:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:57,658 INFO L225 Difference]: With dead ends: 88
[2022-01-31 17:23:57,658 INFO L226 Difference]: Without dead ends: 50
[2022-01-31 17:23:57,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-31 17:23:57,664 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:57,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 65 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-01-31 17:23:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49.
[2022-01-31 17:23:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:57,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions.
[2022-01-31 17:23:57,674 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 33
[2022-01-31 17:23:57,674 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:57,674 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions.
[2022-01-31 17:23:57,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions.
[2022-01-31 17:23:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2022-01-31 17:23:57,675 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:57,675 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:57,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-31 17:23:57,675 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:57,676 INFO L85 PathProgramCache]: Analyzing trace with hash 646895759, now seen corresponding path program 2 times
[2022-01-31 17:23:57,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287321802]
[2022-01-31 17:23:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:57,679 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:57,679 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:57,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:57,680 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:57,725 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:57,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287321802]
[2022-01-31 17:23:57,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1287321802] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:57,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:57,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 17:23:57,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971064685]
[2022-01-31 17:23:57,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:57,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 17:23:57,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 17:23:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 17:23:57,726 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:57,832 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions.
[2022-01-31 17:23:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 17:23:57,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 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 35
[2022-01-31 17:23:57,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:57,835 INFO L225 Difference]: With dead ends: 102
[2022-01-31 17:23:57,835 INFO L226 Difference]: Without dead ends: 67
[2022-01-31 17:23:57,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 17:23:57,841 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 67 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:57,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 44 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2022-01-31 17:23:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58.
[2022-01-31 17:23:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions.
[2022-01-31 17:23:57,847 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 35
[2022-01-31 17:23:57,847 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:57,847 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions.
[2022-01-31 17:23:57,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions.
[2022-01-31 17:23:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2022-01-31 17:23:57,848 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:57,849 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:57,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-31 17:23:57,849 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:57,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1029945693, now seen corresponding path program 1 times
[2022-01-31 17:23:57,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517196596]
[2022-01-31 17:23:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:57,852 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:57,852 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:57,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:57,853 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:57,950 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:57,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517196596]
[2022-01-31 17:23:57,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1517196596] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:57,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:57,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-31 17:23:57,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175862206]
[2022-01-31 17:23:57,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:57,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 17:23:57,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 17:23:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-31 17:23:57,952 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:58,090 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions.
[2022-01-31 17:23:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-01-31 17:23:58,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 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 53
[2022-01-31 17:23:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:58,097 INFO L225 Difference]: With dead ends: 128
[2022-01-31 17:23:58,097 INFO L226 Difference]: Without dead ends: 85
[2022-01-31 17:23:58,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-31 17:23:58,102 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 93 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:58,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 44 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2022-01-31 17:23:58,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76.
[2022-01-31 17:23:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 70 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions.
[2022-01-31 17:23:58,115 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 53
[2022-01-31 17:23:58,115 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:58,117 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions.
[2022-01-31 17:23:58,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,118 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions.
[2022-01-31 17:23:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2022-01-31 17:23:58,123 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:58,123 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:58,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-01-31 17:23:58,124 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash 565953195, now seen corresponding path program 2 times
[2022-01-31 17:23:58,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851045355]
[2022-01-31 17:23:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:58,131 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:58,131 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:58,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:58,134 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:58,271 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:58,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851045355]
[2022-01-31 17:23:58,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1851045355] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:58,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:58,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-31 17:23:58,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337878226]
[2022-01-31 17:23:58,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:58,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-31 17:23:58,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-31 17:23:58,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-01-31 17:23:58,273 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:58,388 INFO L93 Difference]: Finished difference Result 144 states and 164 transitions.
[2022-01-31 17:23:58,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-01-31 17:23:58,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 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 71
[2022-01-31 17:23:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:58,390 INFO L225 Difference]: With dead ends: 144
[2022-01-31 17:23:58,390 INFO L226 Difference]: Without dead ends: 79
[2022-01-31 17:23:58,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-01-31 17:23:58,393 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 55 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:58,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 65 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:58,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2022-01-31 17:23:58,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78.
[2022-01-31 17:23:58,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 72 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions.
[2022-01-31 17:23:58,407 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 71
[2022-01-31 17:23:58,408 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:58,409 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions.
[2022-01-31 17:23:58,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions.
[2022-01-31 17:23:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2022-01-31 17:23:58,410 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:58,410 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:58,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-01-31 17:23:58,410 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:58,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:58,411 INFO L85 PathProgramCache]: Analyzing trace with hash 413945033, now seen corresponding path program 3 times
[2022-01-31 17:23:58,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543627750]
[2022-01-31 17:23:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:58,418 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:58,419 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:58,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:58,420 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:58,535 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:58,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543627750]
[2022-01-31 17:23:58,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1543627750] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:58,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:58,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-01-31 17:23:58,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938065213]
[2022-01-31 17:23:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:58,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-31 17:23:58,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-31 17:23:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-31 17:23:58,538 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:58,639 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions.
[2022-01-31 17:23:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-01-31 17:23:58,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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 73
[2022-01-31 17:23:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:58,640 INFO L225 Difference]: With dead ends: 146
[2022-01-31 17:23:58,640 INFO L226 Difference]: Without dead ends: 81
[2022-01-31 17:23:58,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2022-01-31 17:23:58,642 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 57 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:58,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 65 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2022-01-31 17:23:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80.
[2022-01-31 17:23:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.1486486486486487) internal successors, (85), 74 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions.
[2022-01-31 17:23:58,661 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 73
[2022-01-31 17:23:58,661 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:58,662 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions.
[2022-01-31 17:23:58,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,662 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions.
[2022-01-31 17:23:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2022-01-31 17:23:58,662 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:58,662 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:58,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-01-31 17:23:58,663 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:58,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash 362989415, now seen corresponding path program 4 times
[2022-01-31 17:23:58,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392216825]
[2022-01-31 17:23:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:58,665 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:58,665 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:58,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:58,667 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,763 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 17:23:58,763 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:58,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392216825]
[2022-01-31 17:23:58,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [392216825] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:58,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:58,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-01-31 17:23:58,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363970840]
[2022-01-31 17:23:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:58,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-31 17:23:58,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-31 17:23:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2022-01-31 17:23:58,765 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:58,895 INFO L93 Difference]: Finished difference Result 148 states and 168 transitions.
[2022-01-31 17:23:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-01-31 17:23:58,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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 75
[2022-01-31 17:23:58,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:58,896 INFO L225 Difference]: With dead ends: 148
[2022-01-31 17:23:58,896 INFO L226 Difference]: Without dead ends: 83
[2022-01-31 17:23:58,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156
[2022-01-31 17:23:58,898 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 59 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:58,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 70 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:58,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2022-01-31 17:23:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82.
[2022-01-31 17:23:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions.
[2022-01-31 17:23:58,909 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 75
[2022-01-31 17:23:58,909 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:58,910 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions.
[2022-01-31 17:23:58,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions.
[2022-01-31 17:23:58,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2022-01-31 17:23:58,911 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:58,911 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:58,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-01-31 17:23:58,912 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1360719227, now seen corresponding path program 5 times
[2022-01-31 17:23:58,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139733190]
[2022-01-31 17:23:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:58,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:58,915 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:58,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:58,916 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:58,986 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:58,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139733190]
[2022-01-31 17:23:58,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1139733190] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:58,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:58,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-01-31 17:23:58,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585907867]
[2022-01-31 17:23:58,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:58,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-31 17:23:58,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-31 17:23:58,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-01-31 17:23:58,987 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:59,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:59,117 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions.
[2022-01-31 17:23:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-01-31 17:23:59,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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 77
[2022-01-31 17:23:59,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:59,118 INFO L225 Difference]: With dead ends: 150
[2022-01-31 17:23:59,118 INFO L226 Difference]: Without dead ends: 85
[2022-01-31 17:23:59,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210
[2022-01-31 17:23:59,119 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:59,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 65 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:59,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2022-01-31 17:23:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84.
[2022-01-31 17:23:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.141025641025641) internal successors, (89), 78 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions.
[2022-01-31 17:23:59,129 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 77
[2022-01-31 17:23:59,129 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:59,129 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions.
[2022-01-31 17:23:59,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions.
[2022-01-31 17:23:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2022-01-31 17:23:59,133 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:59,133 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:59,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-01-31 17:23:59,134 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash 12652067, now seen corresponding path program 6 times
[2022-01-31 17:23:59,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:59,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110074131]
[2022-01-31 17:23:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:59,136 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:59,136 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:59,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:59,138 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:59,215 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:59,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110074131]
[2022-01-31 17:23:59,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1110074131] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:59,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:59,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-31 17:23:59,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932693393]
[2022-01-31 17:23:59,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:59,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-31 17:23:59,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:59,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-31 17:23:59,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2022-01-31 17:23:59,216 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:59,361 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions.
[2022-01-31 17:23:59,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-01-31 17:23:59,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 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 79
[2022-01-31 17:23:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:59,362 INFO L225 Difference]: With dead ends: 152
[2022-01-31 17:23:59,362 INFO L226 Difference]: Without dead ends: 87
[2022-01-31 17:23:59,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272
[2022-01-31 17:23:59,362 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 63 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:59,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 65 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2022-01-31 17:23:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86.
[2022-01-31 17:23:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.1375) internal successors, (91), 80 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions.
[2022-01-31 17:23:59,367 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 79
[2022-01-31 17:23:59,367 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:59,367 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions.
[2022-01-31 17:23:59,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions.
[2022-01-31 17:23:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2022-01-31 17:23:59,368 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:59,368 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:59,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-01-31 17:23:59,368 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1267505729, now seen corresponding path program 7 times
[2022-01-31 17:23:59,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:59,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666218829]
[2022-01-31 17:23:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:59,370 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:59,370 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:59,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:59,372 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:59,453 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:59,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666218829]
[2022-01-31 17:23:59,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1666218829] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:59,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:59,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2022-01-31 17:23:59,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418942985]
[2022-01-31 17:23:59,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:59,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-31 17:23:59,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:59,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-31 17:23:59,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110
[2022-01-31 17:23:59,455 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:59,590 INFO L93 Difference]: Finished difference Result 154 states and 174 transitions.
[2022-01-31 17:23:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-01-31 17:23:59,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 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 81
[2022-01-31 17:23:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:59,591 INFO L225 Difference]: With dead ends: 154
[2022-01-31 17:23:59,591 INFO L226 Difference]: Without dead ends: 89
[2022-01-31 17:23:59,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342
[2022-01-31 17:23:59,592 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 65 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:59,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 65 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2022-01-31 17:23:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88.
[2022-01-31 17:23:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions.
[2022-01-31 17:23:59,596 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 81
[2022-01-31 17:23:59,596 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:59,597 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions.
[2022-01-31 17:23:59,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions.
[2022-01-31 17:23:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2022-01-31 17:23:59,597 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:59,597 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:59,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-01-31 17:23:59,597 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash 296064735, now seen corresponding path program 8 times
[2022-01-31 17:23:59,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:59,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526777297]
[2022-01-31 17:23:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:59,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:59,599 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:59,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:59,601 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:59,681 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:59,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526777297]
[2022-01-31 17:23:59,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1526777297] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:59,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:59,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2022-01-31 17:23:59,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223912836]
[2022-01-31 17:23:59,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:59,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-31 17:23:59,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:59,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-31 17:23:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2022-01-31 17:23:59,682 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:59,867 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions.
[2022-01-31 17:23:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-01-31 17:23:59,868 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 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 83
[2022-01-31 17:23:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:59,868 INFO L225 Difference]: With dead ends: 156
[2022-01-31 17:23:59,868 INFO L226 Difference]: Without dead ends: 91
[2022-01-31 17:23:59,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420
[2022-01-31 17:23:59,869 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 67 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:59,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 80 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2022-01-31 17:23:59,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90.
[2022-01-31 17:23:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 84 states have (on average 1.130952380952381) internal successors, (95), 84 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions.
[2022-01-31 17:23:59,874 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 83
[2022-01-31 17:23:59,874 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:59,874 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions.
[2022-01-31 17:23:59,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions.
[2022-01-31 17:23:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2022-01-31 17:23:59,875 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:59,875 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:59,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-01-31 17:23:59,875 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1250827267, now seen corresponding path program 9 times
[2022-01-31 17:23:59,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:59,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098510104]
[2022-01-31 17:23:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:59,877 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:59,878 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:59,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:59,880 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:59,992 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:59,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098510104]
[2022-01-31 17:23:59,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1098510104] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:59,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:59,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2022-01-31 17:23:59,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986579483]
[2022-01-31 17:23:59,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:59,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-31 17:23:59,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-31 17:23:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156
[2022-01-31 17:23:59,993 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:00,149 INFO L93 Difference]: Finished difference Result 158 states and 178 transitions.
[2022-01-31 17:24:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-01-31 17:24:00,150 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 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 85
[2022-01-31 17:24:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:00,150 INFO L225 Difference]: With dead ends: 158
[2022-01-31 17:24:00,150 INFO L226 Difference]: Without dead ends: 93
[2022-01-31 17:24:00,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506
[2022-01-31 17:24:00,151 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 69 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:00,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 65 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:00,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2022-01-31 17:24:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92.
[2022-01-31 17:24:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.127906976744186) internal successors, (97), 86 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions.
[2022-01-31 17:24:00,157 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 85
[2022-01-31 17:24:00,157 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:00,157 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions.
[2022-01-31 17:24:00,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions.
[2022-01-31 17:24:00,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2022-01-31 17:24:00,158 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:00,158 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:00,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-01-31 17:24:00,158 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:00,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:00,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1755356773, now seen corresponding path program 10 times
[2022-01-31 17:24:00,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:00,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843364793]
[2022-01-31 17:24:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:00,161 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:00,161 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:00,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:00,163 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:00,278 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 17:24:00,278 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:00,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843364793]
[2022-01-31 17:24:00,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1843364793] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:00,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:00,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2022-01-31 17:24:00,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629584729]
[2022-01-31 17:24:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:00,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-01-31 17:24:00,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-01-31 17:24:00,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182
[2022-01-31 17:24:00,280 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:00,459 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions.
[2022-01-31 17:24:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-01-31 17:24:00,460 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 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 87
[2022-01-31 17:24:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:00,460 INFO L225 Difference]: With dead ends: 160
[2022-01-31 17:24:00,460 INFO L226 Difference]: Without dead ends: 95
[2022-01-31 17:24:00,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600
[2022-01-31 17:24:00,461 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 71 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:00,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 70 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2022-01-31 17:24:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94.
[2022-01-31 17:24:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions.
[2022-01-31 17:24:00,467 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 87
[2022-01-31 17:24:00,467 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:00,467 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions.
[2022-01-31 17:24:00,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:00,467 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions.
[2022-01-31 17:24:00,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2022-01-31 17:24:00,467 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:00,467 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:00,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-01-31 17:24:00,468 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:00,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1276907591, now seen corresponding path program 11 times
[2022-01-31 17:24:00,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:00,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2697344]
[2022-01-31 17:24:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:00,469 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:00,470 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:00,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:00,472 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:00,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:00,594 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:00,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2697344]
[2022-01-31 17:24:00,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2697344] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:00,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:00,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2022-01-31 17:24:00,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675583813]
[2022-01-31 17:24:00,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:00,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-31 17:24:00,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:00,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-31 17:24:00,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210
[2022-01-31 17:24:00,596 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:00,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:00,778 INFO L93 Difference]: Finished difference Result 162 states and 182 transitions.
[2022-01-31 17:24:00,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-01-31 17:24:00,779 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 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 89
[2022-01-31 17:24:00,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:00,779 INFO L225 Difference]: With dead ends: 162
[2022-01-31 17:24:00,779 INFO L226 Difference]: Without dead ends: 97
[2022-01-31 17:24:00,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702
[2022-01-31 17:24:00,780 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 73 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:00,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 70 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:00,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2022-01-31 17:24:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96.
[2022-01-31 17:24:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.1222222222222222) internal successors, (101), 90 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions.
[2022-01-31 17:24:00,785 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 89
[2022-01-31 17:24:00,785 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:00,785 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions.
[2022-01-31 17:24:00,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:00,786 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions.
[2022-01-31 17:24:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2022-01-31 17:24:00,786 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:00,786 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:00,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-01-31 17:24:00,786 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:00,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1048744361, now seen corresponding path program 12 times
[2022-01-31 17:24:00,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:00,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86025409]
[2022-01-31 17:24:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:00,788 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:00,788 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:00,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:00,790 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:00,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:00,904 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:00,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86025409]
[2022-01-31 17:24:00,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [86025409] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:00,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:00,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2022-01-31 17:24:00,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061364273]
[2022-01-31 17:24:00,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:00,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-31 17:24:00,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:00,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-31 17:24:00,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240
[2022-01-31 17:24:00,905 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:01,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:01,103 INFO L93 Difference]: Finished difference Result 164 states and 184 transitions.
[2022-01-31 17:24:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-01-31 17:24:01,103 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 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 91
[2022-01-31 17:24:01,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:01,104 INFO L225 Difference]: With dead ends: 164
[2022-01-31 17:24:01,104 INFO L226 Difference]: Without dead ends: 99
[2022-01-31 17:24:01,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812
[2022-01-31 17:24:01,105 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 75 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:01,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:01,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2022-01-31 17:24:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98.
[2022-01-31 17:24:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 92 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions.
[2022-01-31 17:24:01,121 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 91
[2022-01-31 17:24:01,121 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:01,121 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions.
[2022-01-31 17:24:01,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions.
[2022-01-31 17:24:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2022-01-31 17:24:01,121 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:01,122 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:01,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-01-31 17:24:01,122 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:01,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:01,122 INFO L85 PathProgramCache]: Analyzing trace with hash -827212427, now seen corresponding path program 13 times
[2022-01-31 17:24:01,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:01,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479741629]
[2022-01-31 17:24:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:01,124 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:01,124 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:01,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:01,126 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:01,273 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:01,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479741629]
[2022-01-31 17:24:01,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [479741629] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:01,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:01,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2022-01-31 17:24:01,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105079427]
[2022-01-31 17:24:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:01,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-31 17:24:01,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:01,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-31 17:24:01,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272
[2022-01-31 17:24:01,274 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:01,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:01,519 INFO L93 Difference]: Finished difference Result 166 states and 186 transitions.
[2022-01-31 17:24:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-01-31 17:24:01,520 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 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 93
[2022-01-31 17:24:01,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:01,520 INFO L225 Difference]: With dead ends: 166
[2022-01-31 17:24:01,520 INFO L226 Difference]: Without dead ends: 101
[2022-01-31 17:24:01,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930
[2022-01-31 17:24:01,521 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 77 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:01,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 75 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2022-01-31 17:24:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100.
[2022-01-31 17:24:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 94 states have (on average 1.1170212765957446) internal successors, (105), 94 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions.
[2022-01-31 17:24:01,527 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 93
[2022-01-31 17:24:01,527 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:01,527 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions.
[2022-01-31 17:24:01,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions.
[2022-01-31 17:24:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2022-01-31 17:24:01,528 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:01,528 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:01,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-01-31 17:24:01,528 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:01,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:01,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1611578643, now seen corresponding path program 14 times
[2022-01-31 17:24:01,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:01,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493770079]
[2022-01-31 17:24:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:01,530 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:01,530 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:01,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:01,532 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:01,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:01,670 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:01,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493770079]
[2022-01-31 17:24:01,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [493770079] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:01,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:01,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2022-01-31 17:24:01,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792538099]
[2022-01-31 17:24:01,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:01,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-01-31 17:24:01,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-01-31 17:24:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306
[2022-01-31 17:24:01,671 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:01,904 INFO L93 Difference]: Finished difference Result 168 states and 188 transitions.
[2022-01-31 17:24:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-01-31 17:24:01,904 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 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 95
[2022-01-31 17:24:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:01,905 INFO L225 Difference]: With dead ends: 168
[2022-01-31 17:24:01,905 INFO L226 Difference]: Without dead ends: 103
[2022-01-31 17:24:01,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 17:24:01,906 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 79 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:01,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 70 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:01,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-01-31 17:24:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102.
[2022-01-31 17:24:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 96 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions.
[2022-01-31 17:24:01,912 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 95
[2022-01-31 17:24:01,912 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:01,912 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions.
[2022-01-31 17:24:01,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:01,912 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions.
[2022-01-31 17:24:01,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2022-01-31 17:24:01,912 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:01,912 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:01,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-01-31 17:24:01,913 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:01,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:01,913 INFO L85 PathProgramCache]: Analyzing trace with hash 237653297, now seen corresponding path program 15 times
[2022-01-31 17:24:01,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:01,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640895497]
[2022-01-31 17:24:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:01,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:01,914 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:01,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:01,916 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:02,142 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:02,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640895497]
[2022-01-31 17:24:02,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1640895497] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:02,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:02,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2022-01-31 17:24:02,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745251815]
[2022-01-31 17:24:02,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:02,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-31 17:24:02,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:02,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-31 17:24:02,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342
[2022-01-31 17:24:02,144 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 18 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:02,438 INFO L93 Difference]: Finished difference Result 170 states and 190 transitions.
[2022-01-31 17:24:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-01-31 17:24:02,438 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 18 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 97
[2022-01-31 17:24:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:02,439 INFO L225 Difference]: With dead ends: 170
[2022-01-31 17:24:02,439 INFO L226 Difference]: Without dead ends: 105
[2022-01-31 17:24:02,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 17:24:02,440 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 81 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:02,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 80 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:02,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2022-01-31 17:24:02,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104.
[2022-01-31 17:24:02,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 98 states have (on average 1.1122448979591837) internal successors, (109), 98 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions.
[2022-01-31 17:24:02,447 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 97
[2022-01-31 17:24:02,447 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:02,448 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions.
[2022-01-31 17:24:02,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 18 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions.
[2022-01-31 17:24:02,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2022-01-31 17:24:02,448 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:02,448 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:02,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-01-31 17:24:02,449 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:02,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1549644337, now seen corresponding path program 16 times
[2022-01-31 17:24:02,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:02,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306083019]
[2022-01-31 17:24:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:02,451 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:02,451 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:02,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:02,453 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:02,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:02,622 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:02,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306083019]
[2022-01-31 17:24:02,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [306083019] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:02,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:02,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2022-01-31 17:24:02,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587401215]
[2022-01-31 17:24:02,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:02,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-01-31 17:24:02,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-01-31 17:24:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380
[2022-01-31 17:24:02,623 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 20 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:02,878 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions.
[2022-01-31 17:24:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-01-31 17:24:02,879 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 19 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 99
[2022-01-31 17:24:02,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:02,879 INFO L225 Difference]: With dead ends: 172
[2022-01-31 17:24:02,880 INFO L226 Difference]: Without dead ends: 107
[2022-01-31 17:24:02,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 17:24:02,881 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 83 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:02,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 70 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2022-01-31 17:24:02,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106.
[2022-01-31 17:24:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 100 states have (on average 1.11) internal successors, (111), 100 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions.
[2022-01-31 17:24:02,886 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 99
[2022-01-31 17:24:02,887 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:02,887 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions.
[2022-01-31 17:24:02,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions.
[2022-01-31 17:24:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2022-01-31 17:24:02,887 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:02,887 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:02,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-01-31 17:24:02,888 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:02,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1155752211, now seen corresponding path program 17 times
[2022-01-31 17:24:02,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:02,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945816726]
[2022-01-31 17:24:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:02,889 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:02,889 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:02,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:02,892 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:03,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:03,060 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:03,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945816726]
[2022-01-31 17:24:03,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1945816726] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:03,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:03,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21
[2022-01-31 17:24:03,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778916151]
[2022-01-31 17:24:03,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:03,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-01-31 17:24:03,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:03,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-01-31 17:24:03,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420
[2022-01-31 17:24:03,061 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 20 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:03,357 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions.
[2022-01-31 17:24:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-01-31 17:24:03,358 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 20 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 101
[2022-01-31 17:24:03,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:03,358 INFO L225 Difference]: With dead ends: 174
[2022-01-31 17:24:03,358 INFO L226 Difference]: Without dead ends: 109
[2022-01-31 17:24:03,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 17:24:03,359 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 85 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:03,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 70 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2022-01-31 17:24:03,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108.
[2022-01-31 17:24:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 102 states have (on average 1.107843137254902) internal successors, (113), 102 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions.
[2022-01-31 17:24:03,365 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 101
[2022-01-31 17:24:03,365 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:03,366 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions.
[2022-01-31 17:24:03,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 20 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions.
[2022-01-31 17:24:03,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2022-01-31 17:24:03,366 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:03,366 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:03,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2022-01-31 17:24:03,366 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash -582541173, now seen corresponding path program 18 times
[2022-01-31 17:24:03,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:03,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105004513]
[2022-01-31 17:24:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:03,368 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:03,368 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:03,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:03,370 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:03,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:03,568 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105004513]
[2022-01-31 17:24:03,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1105004513] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:03,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:03,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2022-01-31 17:24:03,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538648245]
[2022-01-31 17:24:03,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:03,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-01-31 17:24:03,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:03,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-01-31 17:24:03,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462
[2022-01-31 17:24:03,569 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 21 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:03,888 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions.
[2022-01-31 17:24:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-01-31 17:24:03,890 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 21 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 103
[2022-01-31 17:24:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:03,891 INFO L225 Difference]: With dead ends: 176
[2022-01-31 17:24:03,891 INFO L226 Difference]: Without dead ends: 111
[2022-01-31 17:24:03,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 17:24:03,892 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 87 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:03,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 75 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2022-01-31 17:24:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110.
[2022-01-31 17:24:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 104 states have internal predecessors, (115), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions.
[2022-01-31 17:24:03,898 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 103
[2022-01-31 17:24:03,898 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:03,898 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions.
[2022-01-31 17:24:03,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 21 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions.
[2022-01-31 17:24:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2022-01-31 17:24:03,899 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:03,899 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:03,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2022-01-31 17:24:03,899 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 517452457, now seen corresponding path program 19 times
[2022-01-31 17:24:03,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:03,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516081465]
[2022-01-31 17:24:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:03,901 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:03,901 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:03,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:03,906 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:04,104 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:04,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516081465]
[2022-01-31 17:24:04,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [516081465] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:04,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:04,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2022-01-31 17:24:04,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187142663]
[2022-01-31 17:24:04,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:04,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-01-31 17:24:04,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:04,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-01-31 17:24:04,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506
[2022-01-31 17:24:04,105 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 22 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:04,387 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions.
[2022-01-31 17:24:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2022-01-31 17:24:04,387 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 22 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 105
[2022-01-31 17:24:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:04,388 INFO L225 Difference]: With dead ends: 178
[2022-01-31 17:24:04,388 INFO L226 Difference]: Without dead ends: 113
[2022-01-31 17:24:04,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 17:24:04,389 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 89 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:04,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 80 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2022-01-31 17:24:04,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112.
[2022-01-31 17:24:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 106 states have internal predecessors, (117), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions.
[2022-01-31 17:24:04,395 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 105
[2022-01-31 17:24:04,395 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:04,395 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions.
[2022-01-31 17:24:04,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 22 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:04,395 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions.
[2022-01-31 17:24:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2022-01-31 17:24:04,396 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:04,396 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:04,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2022-01-31 17:24:04,396 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:04,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1049376071, now seen corresponding path program 20 times
[2022-01-31 17:24:04,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:04,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206770732]
[2022-01-31 17:24:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:04,398 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:04,398 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:04,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:04,400 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:04,616 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:04,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206770732]
[2022-01-31 17:24:04,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [206770732] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:04,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:04,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2022-01-31 17:24:04,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067840371]
[2022-01-31 17:24:04,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:04,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-01-31 17:24:04,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:04,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-01-31 17:24:04,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552
[2022-01-31 17:24:04,617 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:04,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:04,984 INFO L93 Difference]: Finished difference Result 180 states and 200 transitions.
[2022-01-31 17:24:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-01-31 17:24:04,984 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 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 107
[2022-01-31 17:24:04,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:04,985 INFO L225 Difference]: With dead ends: 180
[2022-01-31 17:24:04,985 INFO L226 Difference]: Without dead ends: 115
[2022-01-31 17:24:04,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 17:24:04,986 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 91 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:04,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 70 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2022-01-31 17:24:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114.
[2022-01-31 17:24:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 108 states have (on average 1.1018518518518519) internal successors, (119), 108 states have internal predecessors, (119), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions.
[2022-01-31 17:24:04,992 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 107
[2022-01-31 17:24:04,992 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:04,992 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions.
[2022-01-31 17:24:04,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions.
[2022-01-31 17:24:04,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2022-01-31 17:24:04,993 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:04,993 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:04,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-01-31 17:24:04,993 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:04,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:04,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1126860901, now seen corresponding path program 21 times
[2022-01-31 17:24:04,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:04,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115024496]
[2022-01-31 17:24:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:04,995 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:04,995 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:04,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:04,997 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:05,214 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:05,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115024496]
[2022-01-31 17:24:05,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [115024496] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:05,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:05,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2022-01-31 17:24:05,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791615991]
[2022-01-31 17:24:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:05,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-01-31 17:24:05,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:05,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-01-31 17:24:05,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600
[2022-01-31 17:24:05,215 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:05,559 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions.
[2022-01-31 17:24:05,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2022-01-31 17:24:05,559 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 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 109
[2022-01-31 17:24:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:05,560 INFO L225 Difference]: With dead ends: 182
[2022-01-31 17:24:05,560 INFO L226 Difference]: Without dead ends: 117
[2022-01-31 17:24:05,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 17:24:05,561 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 93 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:05,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 65 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2022-01-31 17:24:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116.
[2022-01-31 17:24:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 110 states have (on average 1.1) internal successors, (121), 110 states have internal predecessors, (121), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions.
[2022-01-31 17:24:05,570 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 109
[2022-01-31 17:24:05,571 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:05,571 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions.
[2022-01-31 17:24:05,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions.
[2022-01-31 17:24:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2022-01-31 17:24:05,576 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:05,576 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:05,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2022-01-31 17:24:05,576 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1719628797, now seen corresponding path program 22 times
[2022-01-31 17:24:05,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:05,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553180701]
[2022-01-31 17:24:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:05,579 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:05,579 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:05,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:05,582 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:05,840 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:05,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553180701]
[2022-01-31 17:24:05,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1553180701] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:05,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:05,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2022-01-31 17:24:05,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919776479]
[2022-01-31 17:24:05,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:05,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-01-31 17:24:05,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:05,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-01-31 17:24:05,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650
[2022-01-31 17:24:05,841 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:06,215 INFO L93 Difference]: Finished difference Result 184 states and 204 transitions.
[2022-01-31 17:24:06,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-01-31 17:24:06,215 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 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 111
[2022-01-31 17:24:06,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:06,216 INFO L225 Difference]: With dead ends: 184
[2022-01-31 17:24:06,216 INFO L226 Difference]: Without dead ends: 119
[2022-01-31 17:24:06,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 17:24:06,217 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 95 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:06,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 70 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2022-01-31 17:24:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118.
[2022-01-31 17:24:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 112 states have (on average 1.0982142857142858) internal successors, (123), 112 states have internal predecessors, (123), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions.
[2022-01-31 17:24:06,238 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 111
[2022-01-31 17:24:06,238 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:06,238 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions.
[2022-01-31 17:24:06,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions.
[2022-01-31 17:24:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114
[2022-01-31 17:24:06,239 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:06,239 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2022-01-31 17:24:06,239 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1302061023, now seen corresponding path program 23 times
[2022-01-31 17:24:06,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:06,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883675097]
[2022-01-31 17:24:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:06,241 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:06,241 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:06,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:06,244 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:06,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:06,516 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:06,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883675097]
[2022-01-31 17:24:06,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [883675097] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:06,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:06,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2022-01-31 17:24:06,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936825060]
[2022-01-31 17:24:06,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:06,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-31 17:24:06,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-31 17:24:06,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702
[2022-01-31 17:24:06,517 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:06,888 INFO L93 Difference]: Finished difference Result 186 states and 206 transitions.
[2022-01-31 17:24:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-01-31 17:24:06,889 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 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 113
[2022-01-31 17:24:06,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:06,889 INFO L225 Difference]: With dead ends: 186
[2022-01-31 17:24:06,889 INFO L226 Difference]: Without dead ends: 121
[2022-01-31 17:24:06,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 17:24:06,891 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 97 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:06,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 70 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:06,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2022-01-31 17:24:06,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120.
[2022-01-31 17:24:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 114 states have (on average 1.0964912280701755) internal successors, (125), 114 states have internal predecessors, (125), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions.
[2022-01-31 17:24:06,898 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 113
[2022-01-31 17:24:06,898 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:06,898 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions.
[2022-01-31 17:24:06,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions.
[2022-01-31 17:24:06,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2022-01-31 17:24:06,899 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:06,899 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:06,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2022-01-31 17:24:06,899 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:06,899 INFO L85 PathProgramCache]: Analyzing trace with hash 548611263, now seen corresponding path program 24 times
[2022-01-31 17:24:06,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:06,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353803897]
[2022-01-31 17:24:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:06,901 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:06,901 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:06,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:06,903 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:07,196 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:07,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353803897]
[2022-01-31 17:24:07,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [353803897] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:07,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:07,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2022-01-31 17:24:07,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477320242]
[2022-01-31 17:24:07,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:07,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-01-31 17:24:07,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:07,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-01-31 17:24:07,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756
[2022-01-31 17:24:07,197 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 27 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:07,657 INFO L93 Difference]: Finished difference Result 188 states and 208 transitions.
[2022-01-31 17:24:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-01-31 17:24:07,657 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 27 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 115
[2022-01-31 17:24:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:07,658 INFO L225 Difference]: With dead ends: 188
[2022-01-31 17:24:07,658 INFO L226 Difference]: Without dead ends: 123
[2022-01-31 17:24:07,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 17:24:07,659 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 99 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:07,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 75 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2022-01-31 17:24:07,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122.
[2022-01-31 17:24:07,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 116 states have (on average 1.0948275862068966) internal successors, (127), 116 states have internal predecessors, (127), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions.
[2022-01-31 17:24:07,666 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 115
[2022-01-31 17:24:07,666 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:07,666 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions.
[2022-01-31 17:24:07,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 27 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions.
[2022-01-31 17:24:07,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118
[2022-01-31 17:24:07,666 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:07,666 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:07,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2022-01-31 17:24:07,667 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:07,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash 928217565, now seen corresponding path program 25 times
[2022-01-31 17:24:07,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:07,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680292153]
[2022-01-31 17:24:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:07,670 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:07,671 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:07,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:07,673 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:07,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:07,943 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:07,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680292153]
[2022-01-31 17:24:07,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [680292153] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:07,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:07,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29
[2022-01-31 17:24:07,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696294688]
[2022-01-31 17:24:07,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:07,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-01-31 17:24:07,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-01-31 17:24:07,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812
[2022-01-31 17:24:07,944 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 28 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:08,396 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions.
[2022-01-31 17:24:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-01-31 17:24:08,396 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 28 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 117
[2022-01-31 17:24:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:08,397 INFO L225 Difference]: With dead ends: 190
[2022-01-31 17:24:08,397 INFO L226 Difference]: Without dead ends: 125
[2022-01-31 17:24:08,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 17:24:08,398 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 101 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:08,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 80 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2022-01-31 17:24:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124.
[2022-01-31 17:24:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.0932203389830508) internal successors, (129), 118 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions.
[2022-01-31 17:24:08,405 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 117
[2022-01-31 17:24:08,405 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:08,405 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions.
[2022-01-31 17:24:08,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 28 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions.
[2022-01-31 17:24:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2022-01-31 17:24:08,406 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:08,406 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:08,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2022-01-31 17:24:08,406 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:08,406 INFO L85 PathProgramCache]: Analyzing trace with hash 657653627, now seen corresponding path program 26 times
[2022-01-31 17:24:08,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:08,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910088392]
[2022-01-31 17:24:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:08,408 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:08,408 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:08,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:08,410 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:08,710 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:08,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910088392]
[2022-01-31 17:24:08,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [910088392] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:08,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:08,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30
[2022-01-31 17:24:08,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063793508]
[2022-01-31 17:24:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:08,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-01-31 17:24:08,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-01-31 17:24:08,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870
[2022-01-31 17:24:08,711 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:09,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:09,160 INFO L93 Difference]: Finished difference Result 192 states and 212 transitions.
[2022-01-31 17:24:09,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-01-31 17:24:09,160 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 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 119
[2022-01-31 17:24:09,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:09,161 INFO L225 Difference]: With dead ends: 192
[2022-01-31 17:24:09,161 INFO L226 Difference]: Without dead ends: 127
[2022-01-31 17:24:09,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 17:24:09,162 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 103 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:09,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 65 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2022-01-31 17:24:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126.
[2022-01-31 17:24:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 120 states have (on average 1.0916666666666666) internal successors, (131), 120 states have internal predecessors, (131), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions.
[2022-01-31 17:24:09,173 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 119
[2022-01-31 17:24:09,173 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:09,173 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions.
[2022-01-31 17:24:09,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions.
[2022-01-31 17:24:09,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2022-01-31 17:24:09,174 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:09,174 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:09,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2022-01-31 17:24:09,174 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1656253031, now seen corresponding path program 27 times
[2022-01-31 17:24:09,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:09,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338532869]
[2022-01-31 17:24:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:09,176 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:09,176 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:09,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:09,180 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:09,498 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:09,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338532869]
[2022-01-31 17:24:09,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [338532869] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:09,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:09,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31
[2022-01-31 17:24:09,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343981782]
[2022-01-31 17:24:09,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:09,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2022-01-31 17:24:09,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2022-01-31 17:24:09,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930
[2022-01-31 17:24:09,499 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:09,958 INFO L93 Difference]: Finished difference Result 194 states and 214 transitions.
[2022-01-31 17:24:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2022-01-31 17:24:09,958 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 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 121
[2022-01-31 17:24:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:09,959 INFO L225 Difference]: With dead ends: 194
[2022-01-31 17:24:09,959 INFO L226 Difference]: Without dead ends: 129
[2022-01-31 17:24:09,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 17:24:09,960 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 105 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:09,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 80 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2022-01-31 17:24:09,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128.
[2022-01-31 17:24:09,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.0901639344262295) internal successors, (133), 122 states have internal predecessors, (133), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions.
[2022-01-31 17:24:09,968 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 121
[2022-01-31 17:24:09,968 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:09,968 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions.
[2022-01-31 17:24:09,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions.
[2022-01-31 17:24:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124
[2022-01-31 17:24:09,969 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:09,969 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:09,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2022-01-31 17:24:09,969 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash -527492041, now seen corresponding path program 28 times
[2022-01-31 17:24:09,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:09,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756984728]
[2022-01-31 17:24:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:09,971 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:09,971 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:09,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:09,974 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:10,302 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:10,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756984728]
[2022-01-31 17:24:10,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [756984728] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:10,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:10,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32
[2022-01-31 17:24:10,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603636624]
[2022-01-31 17:24:10,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:10,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-01-31 17:24:10,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:10,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-01-31 17:24:10,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992
[2022-01-31 17:24:10,304 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 31 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:10,795 INFO L93 Difference]: Finished difference Result 196 states and 216 transitions.
[2022-01-31 17:24:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-01-31 17:24:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 31 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 123
[2022-01-31 17:24:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:10,796 INFO L225 Difference]: With dead ends: 196
[2022-01-31 17:24:10,796 INFO L226 Difference]: Without dead ends: 131
[2022-01-31 17:24:10,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 17:24:10,798 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 107 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:10,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 65 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:10,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2022-01-31 17:24:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130.
[2022-01-31 17:24:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 124 states have (on average 1.0887096774193548) internal successors, (135), 124 states have internal predecessors, (135), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions.
[2022-01-31 17:24:10,806 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 123
[2022-01-31 17:24:10,807 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:10,807 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions.
[2022-01-31 17:24:10,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 31 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions.
[2022-01-31 17:24:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2022-01-31 17:24:10,807 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:10,807 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:10,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31
[2022-01-31 17:24:10,807 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1880060757, now seen corresponding path program 29 times
[2022-01-31 17:24:10,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:10,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723168103]
[2022-01-31 17:24:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:10,809 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:10,809 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:10,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:10,812 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:11,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:11,169 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:11,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723168103]
[2022-01-31 17:24:11,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1723168103] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:11,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:11,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33
[2022-01-31 17:24:11,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631518545]
[2022-01-31 17:24:11,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:11,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2022-01-31 17:24:11,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2022-01-31 17:24:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 17:24:11,170 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 32 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:11,687 INFO L93 Difference]: Finished difference Result 198 states and 218 transitions.
[2022-01-31 17:24:11,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-01-31 17:24:11,687 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 32 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 125
[2022-01-31 17:24:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:11,688 INFO L225 Difference]: With dead ends: 198
[2022-01-31 17:24:11,688 INFO L226 Difference]: Without dead ends: 133
[2022-01-31 17:24:11,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 17:24:11,689 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 109 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:11,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 85 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2022-01-31 17:24:11,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132.
[2022-01-31 17:24:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 126 states have internal predecessors, (137), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions.
[2022-01-31 17:24:11,697 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 125
[2022-01-31 17:24:11,697 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:11,698 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions.
[2022-01-31 17:24:11,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 32 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:11,698 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions.
[2022-01-31 17:24:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2022-01-31 17:24:11,698 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:11,698 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:11,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32
[2022-01-31 17:24:11,698 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:11,699 INFO L85 PathProgramCache]: Analyzing trace with hash 550927091, now seen corresponding path program 30 times
[2022-01-31 17:24:11,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:11,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75147502]
[2022-01-31 17:24:11,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:11,700 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:11,700 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:11,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:11,703 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:12,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:12,075 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:12,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75147502]
[2022-01-31 17:24:12,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [75147502] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:12,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:12,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34
[2022-01-31 17:24:12,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683359228]
[2022-01-31 17:24:12,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:12,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-01-31 17:24:12,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:12,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-01-31 17:24:12,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122
[2022-01-31 17:24:12,076 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand has 34 states, 34 states have (on average 3.088235294117647) internal successors, (105), 33 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:12,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:12,608 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions.
[2022-01-31 17:24:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-01-31 17:24:12,608 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.088235294117647) internal successors, (105), 33 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 127
[2022-01-31 17:24:12,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:12,609 INFO L225 Difference]: With dead ends: 200
[2022-01-31 17:24:12,609 INFO L226 Difference]: Without dead ends: 135
[2022-01-31 17:24:12,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 17:24:12,611 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 111 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:12,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 80 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2022-01-31 17:24:12,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134.
[2022-01-31 17:24:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 128 states have (on average 1.0859375) internal successors, (139), 128 states have internal predecessors, (139), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions.
[2022-01-31 17:24:12,619 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 127
[2022-01-31 17:24:12,619 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:12,619 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions.
[2022-01-31 17:24:12,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.088235294117647) internal successors, (105), 33 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:12,620 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions.
[2022-01-31 17:24:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-01-31 17:24:12,620 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:12,620 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:12,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33
[2022-01-31 17:24:12,620 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1141239023, now seen corresponding path program 31 times
[2022-01-31 17:24:12,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:12,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324906461]
[2022-01-31 17:24:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:12,622 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:12,622 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:12,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:12,625 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:13,060 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:13,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324906461]
[2022-01-31 17:24:13,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1324906461] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:13,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:13,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35
[2022-01-31 17:24:13,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775424669]
[2022-01-31 17:24:13,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:13,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-01-31 17:24:13,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:13,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-01-31 17:24:13,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 17:24:13,062 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 34 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:13,606 INFO L93 Difference]: Finished difference Result 202 states and 222 transitions.
[2022-01-31 17:24:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2022-01-31 17:24:13,607 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 34 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 129
[2022-01-31 17:24:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:13,607 INFO L225 Difference]: With dead ends: 202
[2022-01-31 17:24:13,607 INFO L226 Difference]: Without dead ends: 137
[2022-01-31 17:24:13,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 17:24:13,609 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 113 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:13,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 75 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states.
[2022-01-31 17:24:13,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136.
[2022-01-31 17:24:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 130 states have (on average 1.0846153846153845) internal successors, (141), 130 states have internal predecessors, (141), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 146 transitions.
[2022-01-31 17:24:13,638 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 146 transitions. Word has length 129
[2022-01-31 17:24:13,638 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:13,638 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 146 transitions.
[2022-01-31 17:24:13,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 34 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:13,639 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 146 transitions.
[2022-01-31 17:24:13,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132
[2022-01-31 17:24:13,640 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:13,640 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:13,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34
[2022-01-31 17:24:13,640 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash 479730607, now seen corresponding path program 32 times
[2022-01-31 17:24:13,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:13,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890911451]
[2022-01-31 17:24:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:13,642 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:13,642 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:13,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:13,645 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:14,073 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890911451]
[2022-01-31 17:24:14,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [890911451] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:14,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:14,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36
[2022-01-31 17:24:14,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593844996]
[2022-01-31 17:24:14,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:14,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2022-01-31 17:24:14,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:14,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2022-01-31 17:24:14,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260
[2022-01-31 17:24:14,074 INFO L87 Difference]: Start difference. First operand 136 states and 146 transitions. Second operand has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 35 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:14,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:14,681 INFO L93 Difference]: Finished difference Result 204 states and 224 transitions.
[2022-01-31 17:24:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-01-31 17:24:14,681 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 35 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 131
[2022-01-31 17:24:14,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:14,682 INFO L225 Difference]: With dead ends: 204
[2022-01-31 17:24:14,682 INFO L226 Difference]: Without dead ends: 139
[2022-01-31 17:24:14,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 17:24:14,684 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 115 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:14,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 85 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states.
[2022-01-31 17:24:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138.
[2022-01-31 17:24:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 132 states have (on average 1.0833333333333333) internal successors, (143), 132 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions.
[2022-01-31 17:24:14,694 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 131
[2022-01-31 17:24:14,694 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:14,694 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions.
[2022-01-31 17:24:14,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 35 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions.
[2022-01-31 17:24:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2022-01-31 17:24:14,695 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:14,695 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:14,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2022-01-31 17:24:14,695 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:14,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash -841583411, now seen corresponding path program 33 times
[2022-01-31 17:24:14,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:14,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841488254]
[2022-01-31 17:24:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:14,698 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:14,698 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:14,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:14,701 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:15,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:15,154 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:15,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841488254]
[2022-01-31 17:24:15,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1841488254] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:15,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:15,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37
[2022-01-31 17:24:15,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628559165]
[2022-01-31 17:24:15,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:15,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2022-01-31 17:24:15,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2022-01-31 17:24:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 17:24:15,155 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:15,767 INFO L93 Difference]: Finished difference Result 206 states and 226 transitions.
[2022-01-31 17:24:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2022-01-31 17:24:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 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 133
[2022-01-31 17:24:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:15,768 INFO L225 Difference]: With dead ends: 206
[2022-01-31 17:24:15,768 INFO L226 Difference]: Without dead ends: 141
[2022-01-31 17:24:15,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 17:24:15,770 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 117 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:15,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 70 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2022-01-31 17:24:15,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140.
[2022-01-31 17:24:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.0820895522388059) internal successors, (145), 134 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions.
[2022-01-31 17:24:15,780 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 133
[2022-01-31 17:24:15,780 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:15,780 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions.
[2022-01-31 17:24:15,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions.
[2022-01-31 17:24:15,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2022-01-31 17:24:15,780 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:15,780 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:15,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36
[2022-01-31 17:24:15,781 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash 685964907, now seen corresponding path program 34 times
[2022-01-31 17:24:15,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:15,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668856596]
[2022-01-31 17:24:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:15,782 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:15,782 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:15,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:15,787 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:16,225 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:16,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668856596]
[2022-01-31 17:24:16,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1668856596] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:16,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:16,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38
[2022-01-31 17:24:16,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507228048]
[2022-01-31 17:24:16,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:16,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2022-01-31 17:24:16,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:16,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2022-01-31 17:24:16,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406
[2022-01-31 17:24:16,227 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand has 38 states, 38 states have (on average 2.973684210526316) internal successors, (113), 37 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:16,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:16,803 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions.
[2022-01-31 17:24:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2022-01-31 17:24:16,804 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.973684210526316) internal successors, (113), 37 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135
[2022-01-31 17:24:16,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:16,804 INFO L225 Difference]: With dead ends: 208
[2022-01-31 17:24:16,804 INFO L226 Difference]: Without dead ends: 143
[2022-01-31 17:24:16,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 17:24:16,805 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 119 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:16,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 65 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2022-01-31 17:24:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142.
[2022-01-31 17:24:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 136 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions.
[2022-01-31 17:24:16,816 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 135
[2022-01-31 17:24:16,816 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:16,816 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions.
[2022-01-31 17:24:16,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.973684210526316) internal successors, (113), 37 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions.
[2022-01-31 17:24:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138
[2022-01-31 17:24:16,830 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:16,830 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:16,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37
[2022-01-31 17:24:16,830 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:16,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:16,831 INFO L85 PathProgramCache]: Analyzing trace with hash -218916727, now seen corresponding path program 35 times
[2022-01-31 17:24:16,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:16,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876755401]
[2022-01-31 17:24:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:16,833 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:16,833 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:16,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:16,837 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:17,334 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:17,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876755401]
[2022-01-31 17:24:17,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [876755401] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:17,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:17,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39
[2022-01-31 17:24:17,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742996602]
[2022-01-31 17:24:17,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:17,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2022-01-31 17:24:17,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:17,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2022-01-31 17:24:17,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 17:24:17,335 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 38 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:18,009 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions.
[2022-01-31 17:24:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-01-31 17:24:18,009 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 38 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 137
[2022-01-31 17:24:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:18,010 INFO L225 Difference]: With dead ends: 210
[2022-01-31 17:24:18,010 INFO L226 Difference]: Without dead ends: 145
[2022-01-31 17:24:18,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 17:24:18,011 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 121 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:18,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 90 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:18,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states.
[2022-01-31 17:24:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144.
[2022-01-31 17:24:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.0797101449275361) internal successors, (149), 138 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions.
[2022-01-31 17:24:18,021 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 137
[2022-01-31 17:24:18,021 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:18,021 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions.
[2022-01-31 17:24:18,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 38 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions.
[2022-01-31 17:24:18,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2022-01-31 17:24:18,022 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:18,022 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:18,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38
[2022-01-31 17:24:18,022 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2068194087, now seen corresponding path program 36 times
[2022-01-31 17:24:18,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:18,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141362684]
[2022-01-31 17:24:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:18,025 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:18,025 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:18,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:18,028 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:18,567 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:18,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141362684]
[2022-01-31 17:24:18,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [141362684] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:18,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:18,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40
[2022-01-31 17:24:18,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715719023]
[2022-01-31 17:24:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:18,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2022-01-31 17:24:18,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2022-01-31 17:24:18,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560
[2022-01-31 17:24:18,568 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand has 40 states, 40 states have (on average 2.925) internal successors, (117), 39 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:19,228 INFO L93 Difference]: Finished difference Result 212 states and 232 transitions.
[2022-01-31 17:24:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-01-31 17:24:19,228 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.925) internal successors, (117), 39 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139
[2022-01-31 17:24:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:19,229 INFO L225 Difference]: With dead ends: 212
[2022-01-31 17:24:19,229 INFO L226 Difference]: Without dead ends: 147
[2022-01-31 17:24:19,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 17:24:19,230 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 123 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:19,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 75 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:19,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2022-01-31 17:24:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146.
[2022-01-31 17:24:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 140 states have (on average 1.0785714285714285) internal successors, (151), 140 states have internal predecessors, (151), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 156 transitions.
[2022-01-31 17:24:19,242 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 156 transitions. Word has length 139
[2022-01-31 17:24:19,242 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:19,242 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 156 transitions.
[2022-01-31 17:24:19,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.925) internal successors, (117), 39 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 156 transitions.
[2022-01-31 17:24:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2022-01-31 17:24:19,243 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:19,243 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:19,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39
[2022-01-31 17:24:19,243 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash 958430789, now seen corresponding path program 37 times
[2022-01-31 17:24:19,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:19,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834103152]
[2022-01-31 17:24:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:19,245 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:19,245 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:19,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:19,249 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:19,809 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:19,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834103152]
[2022-01-31 17:24:19,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1834103152] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:19,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:19,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41
[2022-01-31 17:24:19,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070574168]
[2022-01-31 17:24:19,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:19,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states
[2022-01-31 17:24:19,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2022-01-31 17:24:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 17:24:19,810 INFO L87 Difference]: Start difference. First operand 146 states and 156 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 40 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:20,517 INFO L93 Difference]: Finished difference Result 214 states and 234 transitions.
[2022-01-31 17:24:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2022-01-31 17:24:20,517 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 40 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141
[2022-01-31 17:24:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:20,518 INFO L225 Difference]: With dead ends: 214
[2022-01-31 17:24:20,518 INFO L226 Difference]: Without dead ends: 149
[2022-01-31 17:24:20,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162
[2022-01-31 17:24:20,519 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 125 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:20,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 85 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:20,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states.
[2022-01-31 17:24:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148.
[2022-01-31 17:24:20,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 142 states have (on average 1.0774647887323943) internal successors, (153), 142 states have internal predecessors, (153), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions.
[2022-01-31 17:24:20,530 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 141
[2022-01-31 17:24:20,530 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:20,531 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions.
[2022-01-31 17:24:20,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 40 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions.
[2022-01-31 17:24:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2022-01-31 17:24:20,531 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:20,531 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:20,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40
[2022-01-31 17:24:20,531 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:20,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash -372209181, now seen corresponding path program 38 times
[2022-01-31 17:24:20,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:20,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833768860]
[2022-01-31 17:24:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:20,534 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:20,534 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:20,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:20,537 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:21,109 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:21,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833768860]
[2022-01-31 17:24:21,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [833768860] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:21,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:21,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42
[2022-01-31 17:24:21,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265685567]
[2022-01-31 17:24:21,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:21,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2022-01-31 17:24:21,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:21,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2022-01-31 17:24:21,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722
[2022-01-31 17:24:21,110 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:21,871 INFO L93 Difference]: Finished difference Result 216 states and 236 transitions.
[2022-01-31 17:24:21,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2022-01-31 17:24:21,871 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143
[2022-01-31 17:24:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:21,872 INFO L225 Difference]: With dead ends: 216
[2022-01-31 17:24:21,872 INFO L226 Difference]: Without dead ends: 151
[2022-01-31 17:24:21,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 17:24:21,874 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 127 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:21,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 85 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:21,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2022-01-31 17:24:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150.
[2022-01-31 17:24:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 144 states have (on average 1.0763888888888888) internal successors, (155), 144 states have internal predecessors, (155), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 160 transitions.
[2022-01-31 17:24:21,895 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 160 transitions. Word has length 143
[2022-01-31 17:24:21,895 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:21,895 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 160 transitions.
[2022-01-31 17:24:21,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 160 transitions.
[2022-01-31 17:24:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2022-01-31 17:24:21,895 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:21,895 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:21,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41
[2022-01-31 17:24:21,896 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:21,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash 783033857, now seen corresponding path program 39 times
[2022-01-31 17:24:21,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:21,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14243286]
[2022-01-31 17:24:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:21,898 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:21,898 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:21,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:21,902 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:22,475 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:22,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14243286]
[2022-01-31 17:24:22,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [14243286] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:22,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:22,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43
[2022-01-31 17:24:22,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617849182]
[2022-01-31 17:24:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:22,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states
[2022-01-31 17:24:22,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2022-01-31 17:24:22,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 17:24:22,476 INFO L87 Difference]: Start difference. First operand 150 states and 160 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 42 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:23,211 INFO L93 Difference]: Finished difference Result 218 states and 238 transitions.
[2022-01-31 17:24:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2022-01-31 17:24:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 42 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145
[2022-01-31 17:24:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:23,212 INFO L225 Difference]: With dead ends: 218
[2022-01-31 17:24:23,212 INFO L226 Difference]: Without dead ends: 153
[2022-01-31 17:24:23,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 17:24:23,213 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 129 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:23,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 65 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:23,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2022-01-31 17:24:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152.
[2022-01-31 17:24:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.0753424657534247) internal successors, (157), 146 states have internal predecessors, (157), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions.
[2022-01-31 17:24:23,225 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 145
[2022-01-31 17:24:23,225 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:23,226 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions.
[2022-01-31 17:24:23,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 42 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions.
[2022-01-31 17:24:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2022-01-31 17:24:23,226 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:23,226 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:23,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42
[2022-01-31 17:24:23,226 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:23,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:23,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1424936289, now seen corresponding path program 40 times
[2022-01-31 17:24:23,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:23,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652708382]
[2022-01-31 17:24:23,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:23,229 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:23,229 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:23,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:23,232 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:23,815 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:23,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652708382]
[2022-01-31 17:24:23,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [652708382] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:23,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:23,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44
[2022-01-31 17:24:23,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641467595]
[2022-01-31 17:24:23,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:23,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2022-01-31 17:24:23,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:23,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2022-01-31 17:24:23,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892
[2022-01-31 17:24:23,816 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand has 44 states, 44 states have (on average 2.840909090909091) internal successors, (125), 43 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:24,622 INFO L93 Difference]: Finished difference Result 220 states and 240 transitions.
[2022-01-31 17:24:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-01-31 17:24:24,623 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.840909090909091) internal successors, (125), 43 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147
[2022-01-31 17:24:24,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:24,623 INFO L225 Difference]: With dead ends: 220
[2022-01-31 17:24:24,624 INFO L226 Difference]: Without dead ends: 155
[2022-01-31 17:24:24,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 17:24:24,625 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 131 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:24,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 75 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2022-01-31 17:24:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154.
[2022-01-31 17:24:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.0743243243243243) internal successors, (159), 148 states have internal predecessors, (159), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions.
[2022-01-31 17:24:24,637 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 147
[2022-01-31 17:24:24,637 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:24,638 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions.
[2022-01-31 17:24:24,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.840909090909091) internal successors, (125), 43 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions.
[2022-01-31 17:24:24,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2022-01-31 17:24:24,638 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:24,638 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:24,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43
[2022-01-31 17:24:24,638 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:24,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1570402371, now seen corresponding path program 41 times
[2022-01-31 17:24:24,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:24,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810692199]
[2022-01-31 17:24:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:24,640 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:24,641 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:24,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:24,644 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:25,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:25,297 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:25,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810692199]
[2022-01-31 17:24:25,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1810692199] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:25,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:25,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45
[2022-01-31 17:24:25,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498407475]
[2022-01-31 17:24:25,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:25,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2022-01-31 17:24:25,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:25,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2022-01-31 17:24:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 17:24:25,298 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 45 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 44 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:26,088 INFO L93 Difference]: Finished difference Result 222 states and 242 transitions.
[2022-01-31 17:24:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-01-31 17:24:26,088 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 44 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149
[2022-01-31 17:24:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:26,089 INFO L225 Difference]: With dead ends: 222
[2022-01-31 17:24:26,089 INFO L226 Difference]: Without dead ends: 157
[2022-01-31 17:24:26,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 17:24:26,090 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 133 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:26,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 75 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states.
[2022-01-31 17:24:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156.
[2022-01-31 17:24:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.0733333333333333) internal successors, (161), 150 states have internal predecessors, (161), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions.
[2022-01-31 17:24:26,103 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 149
[2022-01-31 17:24:26,103 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:26,104 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions.
[2022-01-31 17:24:26,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 44 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:26,104 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions.
[2022-01-31 17:24:26,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152
[2022-01-31 17:24:26,104 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:26,104 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:26,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44
[2022-01-31 17:24:26,104 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:26,105 INFO L85 PathProgramCache]: Analyzing trace with hash 370613595, now seen corresponding path program 42 times
[2022-01-31 17:24:26,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:26,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283151227]
[2022-01-31 17:24:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:26,107 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:26,107 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:26,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:26,111 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:26,724 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:26,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283151227]
[2022-01-31 17:24:26,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [283151227] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:26,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:26,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46
[2022-01-31 17:24:26,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142416323]
[2022-01-31 17:24:26,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:26,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2022-01-31 17:24:26,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:26,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2022-01-31 17:24:26,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070
[2022-01-31 17:24:26,725 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 46 states, 46 states have (on average 2.8043478260869565) internal successors, (129), 45 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:27,585 INFO L93 Difference]: Finished difference Result 224 states and 244 transitions.
[2022-01-31 17:24:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-01-31 17:24:27,586 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.8043478260869565) internal successors, (129), 45 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151
[2022-01-31 17:24:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:27,586 INFO L225 Difference]: With dead ends: 224
[2022-01-31 17:24:27,586 INFO L226 Difference]: Without dead ends: 159
[2022-01-31 17:24:27,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 17:24:27,588 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 135 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:27,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 75 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2022-01-31 17:24:27,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158.
[2022-01-31 17:24:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.0723684210526316) internal successors, (163), 152 states have internal predecessors, (163), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:27,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions.
[2022-01-31 17:24:27,601 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 151
[2022-01-31 17:24:27,601 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:27,601 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions.
[2022-01-31 17:24:27,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.8043478260869565) internal successors, (129), 45 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions.
[2022-01-31 17:24:27,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2022-01-31 17:24:27,602 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:27,602 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:27,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45
[2022-01-31 17:24:27,602 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1671150457, now seen corresponding path program 43 times
[2022-01-31 17:24:27,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:27,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833958267]
[2022-01-31 17:24:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:27,604 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:27,604 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:27,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:27,608 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:28,243 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:28,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833958267]
[2022-01-31 17:24:28,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1833958267] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:28,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:28,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47
[2022-01-31 17:24:28,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292543905]
[2022-01-31 17:24:28,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:28,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2022-01-31 17:24:28,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2022-01-31 17:24:28,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 17:24:28,245 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 47 states, 47 states have (on average 2.7872340425531914) internal successors, (131), 46 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:29,116 INFO L93 Difference]: Finished difference Result 226 states and 246 transitions.
[2022-01-31 17:24:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2022-01-31 17:24:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.7872340425531914) internal successors, (131), 46 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153
[2022-01-31 17:24:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:29,117 INFO L225 Difference]: With dead ends: 226
[2022-01-31 17:24:29,117 INFO L226 Difference]: Without dead ends: 161
[2022-01-31 17:24:29,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190
[2022-01-31 17:24:29,118 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 137 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:29,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 80 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states.
[2022-01-31 17:24:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160.
[2022-01-31 17:24:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.0714285714285714) internal successors, (165), 154 states have internal predecessors, (165), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions.
[2022-01-31 17:24:29,132 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 153
[2022-01-31 17:24:29,132 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:29,132 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions.
[2022-01-31 17:24:29,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.7872340425531914) internal successors, (131), 46 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions.
[2022-01-31 17:24:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2022-01-31 17:24:29,133 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:29,133 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:29,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46
[2022-01-31 17:24:29,133 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:29,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1651591703, now seen corresponding path program 44 times
[2022-01-31 17:24:29,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:29,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696286726]
[2022-01-31 17:24:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:29,138 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:29,139 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:29,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:29,143 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:29,895 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:29,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696286726]
[2022-01-31 17:24:29,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [696286726] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:29,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:29,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48
[2022-01-31 17:24:29,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113222154]
[2022-01-31 17:24:29,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:29,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-01-31 17:24:29,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-01-31 17:24:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256
[2022-01-31 17:24:29,896 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 47 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:30,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:30,796 INFO L93 Difference]: Finished difference Result 228 states and 248 transitions.
[2022-01-31 17:24:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2022-01-31 17:24:30,797 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 47 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155
[2022-01-31 17:24:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:30,797 INFO L225 Difference]: With dead ends: 228
[2022-01-31 17:24:30,797 INFO L226 Difference]: Without dead ends: 163
[2022-01-31 17:24:30,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 17:24:30,798 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 139 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:30,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 80 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states.
[2022-01-31 17:24:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162.
[2022-01-31 17:24:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 156 states have (on average 1.0705128205128205) internal successors, (167), 156 states have internal predecessors, (167), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions.
[2022-01-31 17:24:30,813 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 155
[2022-01-31 17:24:30,813 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:30,813 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions.
[2022-01-31 17:24:30,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 47 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:30,813 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions.
[2022-01-31 17:24:30,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2022-01-31 17:24:30,814 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:30,814 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:30,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47
[2022-01-31 17:24:30,814 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:30,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:30,814 INFO L85 PathProgramCache]: Analyzing trace with hash 35498293, now seen corresponding path program 45 times
[2022-01-31 17:24:30,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:30,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791738466]
[2022-01-31 17:24:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:30,816 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:30,816 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:30,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:30,819 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:31,558 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:31,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791738466]
[2022-01-31 17:24:31,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1791738466] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:31,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:31,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49
[2022-01-31 17:24:31,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660217310]
[2022-01-31 17:24:31,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:31,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2022-01-31 17:24:31,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:31,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2022-01-31 17:24:31,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 17:24:31,559 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 48 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:32,491 INFO L93 Difference]: Finished difference Result 230 states and 250 transitions.
[2022-01-31 17:24:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2022-01-31 17:24:32,491 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 48 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157
[2022-01-31 17:24:32,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:32,492 INFO L225 Difference]: With dead ends: 230
[2022-01-31 17:24:32,492 INFO L226 Difference]: Without dead ends: 165
[2022-01-31 17:24:32,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 17:24:32,493 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 141 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:32,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 70 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:32,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2022-01-31 17:24:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164.
[2022-01-31 17:24:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 158 states have (on average 1.0696202531645569) internal successors, (169), 158 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions.
[2022-01-31 17:24:32,508 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 157
[2022-01-31 17:24:32,508 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:32,508 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions.
[2022-01-31 17:24:32,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 48 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions.
[2022-01-31 17:24:32,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2022-01-31 17:24:32,509 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:32,509 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:32,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48
[2022-01-31 17:24:32,509 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:32,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:32,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1747892435, now seen corresponding path program 46 times
[2022-01-31 17:24:32,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:32,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952151364]
[2022-01-31 17:24:32,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:32,511 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:32,511 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:32,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:32,515 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:33,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:33,263 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:33,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952151364]
[2022-01-31 17:24:33,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1952151364] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:33,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:33,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50
[2022-01-31 17:24:33,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834913023]
[2022-01-31 17:24:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:33,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2022-01-31 17:24:33,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:33,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2022-01-31 17:24:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450
[2022-01-31 17:24:33,265 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand has 50 states, 50 states have (on average 2.74) internal successors, (137), 49 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:34,260 INFO L93 Difference]: Finished difference Result 232 states and 252 transitions.
[2022-01-31 17:24:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-01-31 17:24:34,260 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.74) internal successors, (137), 49 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159
[2022-01-31 17:24:34,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:34,261 INFO L225 Difference]: With dead ends: 232
[2022-01-31 17:24:34,261 INFO L226 Difference]: Without dead ends: 167
[2022-01-31 17:24:34,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 17:24:34,262 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 143 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:34,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 80 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:34,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2022-01-31 17:24:34,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166.
[2022-01-31 17:24:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 160 states have (on average 1.06875) internal successors, (171), 160 states have internal predecessors, (171), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions.
[2022-01-31 17:24:34,277 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 159
[2022-01-31 17:24:34,277 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:34,277 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions.
[2022-01-31 17:24:34,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.74) internal successors, (137), 49 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions.
[2022-01-31 17:24:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2022-01-31 17:24:34,278 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:34,278 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:34,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49
[2022-01-31 17:24:34,278 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:34,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1908778767, now seen corresponding path program 47 times
[2022-01-31 17:24:34,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:34,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358707810]
[2022-01-31 17:24:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:34,280 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:34,280 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:34,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:34,284 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:35,077 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:35,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358707810]
[2022-01-31 17:24:35,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [358707810] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:35,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:35,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51
[2022-01-31 17:24:35,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054734927]
[2022-01-31 17:24:35,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:35,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states
[2022-01-31 17:24:35,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:35,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants.
[2022-01-31 17:24:35,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 17:24:35,079 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand has 51 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 50 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:36,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:36,099 INFO L93 Difference]: Finished difference Result 234 states and 254 transitions.
[2022-01-31 17:24:36,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-01-31 17:24:36,099 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 50 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161
[2022-01-31 17:24:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:36,100 INFO L225 Difference]: With dead ends: 234
[2022-01-31 17:24:36,100 INFO L226 Difference]: Without dead ends: 169
[2022-01-31 17:24:36,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 17:24:36,101 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 145 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:36,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 90 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states.
[2022-01-31 17:24:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168.
[2022-01-31 17:24:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 162 states have (on average 1.0679012345679013) internal successors, (173), 162 states have internal predecessors, (173), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions.
[2022-01-31 17:24:36,118 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 161
[2022-01-31 17:24:36,118 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:36,119 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 178 transitions.
[2022-01-31 17:24:36,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 50 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 178 transitions.
[2022-01-31 17:24:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164
[2022-01-31 17:24:36,119 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:36,119 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:36,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50
[2022-01-31 17:24:36,119 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1608411535, now seen corresponding path program 48 times
[2022-01-31 17:24:36,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:36,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221963626]
[2022-01-31 17:24:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:36,121 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:36,121 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:36,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:36,125 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:36,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:36,909 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:36,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221963626]
[2022-01-31 17:24:36,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [221963626] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:36,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:36,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52
[2022-01-31 17:24:36,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528605547]
[2022-01-31 17:24:36,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:36,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states
[2022-01-31 17:24:36,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2022-01-31 17:24:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652
[2022-01-31 17:24:36,910 INFO L87 Difference]: Start difference. First operand 168 states and 178 transitions. Second operand has 52 states, 52 states have (on average 2.7115384615384617) internal successors, (141), 51 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:37,933 INFO L93 Difference]: Finished difference Result 236 states and 256 transitions.
[2022-01-31 17:24:37,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2022-01-31 17:24:37,933 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.7115384615384617) internal successors, (141), 51 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163
[2022-01-31 17:24:37,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:37,934 INFO L225 Difference]: With dead ends: 236
[2022-01-31 17:24:37,934 INFO L226 Difference]: Without dead ends: 171
[2022-01-31 17:24:37,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 17:24:37,935 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 147 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:37,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 75 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states.
[2022-01-31 17:24:37,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170.
[2022-01-31 17:24:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 164 states have (on average 1.0670731707317074) internal successors, (175), 164 states have internal predecessors, (175), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 180 transitions.
[2022-01-31 17:24:37,952 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 180 transitions. Word has length 163
[2022-01-31 17:24:37,952 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:37,952 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 180 transitions.
[2022-01-31 17:24:37,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.7115384615384617) internal successors, (141), 51 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 180 transitions.
[2022-01-31 17:24:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2022-01-31 17:24:37,953 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:37,953 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:37,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51
[2022-01-31 17:24:37,953 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:37,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1489029805, now seen corresponding path program 49 times
[2022-01-31 17:24:37,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:37,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338610415]
[2022-01-31 17:24:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:37,955 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:37,955 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:37,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:37,960 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:38,789 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:38,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338610415]
[2022-01-31 17:24:38,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1338610415] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:38,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:38,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53
[2022-01-31 17:24:38,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318809998]
[2022-01-31 17:24:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:38,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states
[2022-01-31 17:24:38,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:38,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants.
[2022-01-31 17:24:38,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 17:24:38,791 INFO L87 Difference]: Start difference. First operand 170 states and 180 transitions. Second operand has 53 states, 53 states have (on average 2.69811320754717) internal successors, (143), 52 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:39,891 INFO L93 Difference]: Finished difference Result 238 states and 258 transitions.
[2022-01-31 17:24:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-01-31 17:24:39,892 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.69811320754717) internal successors, (143), 52 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165
[2022-01-31 17:24:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:39,892 INFO L225 Difference]: With dead ends: 238
[2022-01-31 17:24:39,892 INFO L226 Difference]: Without dead ends: 173
[2022-01-31 17:24:39,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506
[2022-01-31 17:24:39,893 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 149 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:39,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 90 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:39,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states.
[2022-01-31 17:24:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172.
[2022-01-31 17:24:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.0662650602409638) internal successors, (177), 166 states have internal predecessors, (177), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 182 transitions.
[2022-01-31 17:24:39,912 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 182 transitions. Word has length 165
[2022-01-31 17:24:39,912 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:39,912 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 182 transitions.
[2022-01-31 17:24:39,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.69811320754717) internal successors, (143), 52 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 182 transitions.
[2022-01-31 17:24:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168
[2022-01-31 17:24:39,912 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:39,912 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:39,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52
[2022-01-31 17:24:39,913 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:39,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1567663029, now seen corresponding path program 50 times
[2022-01-31 17:24:39,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:39,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546124653]
[2022-01-31 17:24:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:39,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:39,914 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:39,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:39,918 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:40,765 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:40,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546124653]
[2022-01-31 17:24:40,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1546124653] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:40,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:40,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54
[2022-01-31 17:24:40,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775843479]
[2022-01-31 17:24:40,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:40,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states
[2022-01-31 17:24:40,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants.
[2022-01-31 17:24:40,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862
[2022-01-31 17:24:40,767 INFO L87 Difference]: Start difference. First operand 172 states and 182 transitions. Second operand has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 53 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:41,897 INFO L93 Difference]: Finished difference Result 240 states and 260 transitions.
[2022-01-31 17:24:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-01-31 17:24:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 53 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167
[2022-01-31 17:24:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:41,901 INFO L225 Difference]: With dead ends: 240
[2022-01-31 17:24:41,901 INFO L226 Difference]: Without dead ends: 175
[2022-01-31 17:24:41,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 17:24:41,902 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 151 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:41,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 80 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states.
[2022-01-31 17:24:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174.
[2022-01-31 17:24:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 168 states have (on average 1.0654761904761905) internal successors, (179), 168 states have internal predecessors, (179), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 184 transitions.
[2022-01-31 17:24:41,919 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 184 transitions. Word has length 167
[2022-01-31 17:24:41,919 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:41,920 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 184 transitions.
[2022-01-31 17:24:41,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 53 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 184 transitions.
[2022-01-31 17:24:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2022-01-31 17:24:41,920 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:41,920 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:41,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53
[2022-01-31 17:24:41,920 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:41,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:41,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1291846039, now seen corresponding path program 51 times
[2022-01-31 17:24:41,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:41,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164988488]
[2022-01-31 17:24:41,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:41,922 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:41,922 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:41,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:41,926 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:42,795 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:42,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164988488]
[2022-01-31 17:24:42,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [164988488] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:42,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:42,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55
[2022-01-31 17:24:42,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442233171]
[2022-01-31 17:24:42,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:42,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states
[2022-01-31 17:24:42,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:42,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants.
[2022-01-31 17:24:42,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 17:24:42,797 INFO L87 Difference]: Start difference. First operand 174 states and 184 transitions. Second operand has 55 states, 55 states have (on average 2.672727272727273) internal successors, (147), 54 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:43,948 INFO L93 Difference]: Finished difference Result 242 states and 262 transitions.
[2022-01-31 17:24:43,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-01-31 17:24:43,948 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.672727272727273) internal successors, (147), 54 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169
[2022-01-31 17:24:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:43,949 INFO L225 Difference]: With dead ends: 242
[2022-01-31 17:24:43,949 INFO L226 Difference]: Without dead ends: 177
[2022-01-31 17:24:43,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342
[2022-01-31 17:24:43,950 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 153 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:43,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 80 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:43,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2022-01-31 17:24:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176.
[2022-01-31 17:24:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 170 states have (on average 1.0647058823529412) internal successors, (181), 170 states have internal predecessors, (181), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions.
[2022-01-31 17:24:43,968 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 169
[2022-01-31 17:24:43,968 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:43,968 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 186 transitions.
[2022-01-31 17:24:43,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.672727272727273) internal successors, (147), 54 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:43,969 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 186 transitions.
[2022-01-31 17:24:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172
[2022-01-31 17:24:43,969 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:43,969 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:43,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54
[2022-01-31 17:24:43,969 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1775276295, now seen corresponding path program 52 times
[2022-01-31 17:24:43,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:43,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277996412]
[2022-01-31 17:24:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:43,971 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:43,971 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:43,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:43,975 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:44,987 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 17:24:44,987 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:44,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277996412]
[2022-01-31 17:24:44,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277996412] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:44,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:44,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56
[2022-01-31 17:24:44,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059161471]
[2022-01-31 17:24:44,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:44,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states
[2022-01-31 17:24:44,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:44,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants.
[2022-01-31 17:24:44,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080
[2022-01-31 17:24:44,989 INFO L87 Difference]: Start difference. First operand 176 states and 186 transitions. Second operand has 56 states, 56 states have (on average 2.6607142857142856) internal successors, (149), 55 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:46,133 INFO L93 Difference]: Finished difference Result 244 states and 264 transitions.
[2022-01-31 17:24:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2022-01-31 17:24:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.6607142857142856) internal successors, (149), 55 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171
[2022-01-31 17:24:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:46,134 INFO L225 Difference]: With dead ends: 244
[2022-01-31 17:24:46,134 INFO L226 Difference]: Without dead ends: 179
[2022-01-31 17:24:46,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772
[2022-01-31 17:24:46,135 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 155 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:46,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 65 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2022-01-31 17:24:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178.
[2022-01-31 17:24:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 172 states have (on average 1.063953488372093) internal successors, (183), 172 states have internal predecessors, (183), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions.
[2022-01-31 17:24:46,154 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 171
[2022-01-31 17:24:46,154 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:46,154 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions.
[2022-01-31 17:24:46,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.6607142857142856) internal successors, (149), 55 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions.
[2022-01-31 17:24:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174
[2022-01-31 17:24:46,155 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:46,155 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:46,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55
[2022-01-31 17:24:46,155 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1362693083, now seen corresponding path program 53 times
[2022-01-31 17:24:46,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:46,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238122674]
[2022-01-31 17:24:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:46,157 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:46,157 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:46,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:46,161 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:47,118 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:47,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238122674]
[2022-01-31 17:24:47,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [238122674] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:47,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:47,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57
[2022-01-31 17:24:47,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240531453]
[2022-01-31 17:24:47,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:47,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states
[2022-01-31 17:24:47,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants.
[2022-01-31 17:24:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 17:24:47,119 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand has 57 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 56 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:48,331 INFO L93 Difference]: Finished difference Result 246 states and 266 transitions.
[2022-01-31 17:24:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2022-01-31 17:24:48,332 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 56 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173
[2022-01-31 17:24:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:48,332 INFO L225 Difference]: With dead ends: 246
[2022-01-31 17:24:48,332 INFO L226 Difference]: Without dead ends: 181
[2022-01-31 17:24:48,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210
[2022-01-31 17:24:48,333 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 157 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:48,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 75 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states.
[2022-01-31 17:24:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180.
[2022-01-31 17:24:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 174 states have (on average 1.0632183908045978) internal successors, (185), 174 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 17:24:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 190 transitions.
[2022-01-31 17:24:48,352 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 190 transitions. Word has length 173
[2022-01-31 17:24:48,352 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:48,352 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 190 transitions.
[2022-01-31 17:24:48,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 56 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 190 transitions.
[2022-01-31 17:24:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2022-01-31 17:24:48,353 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:48,353 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:48,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56
[2022-01-31 17:24:48,353 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:48,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1884223549, now seen corresponding path program 54 times
[2022-01-31 17:24:48,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:48,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107369425]
[2022-01-31 17:24:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:48,355 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:48,355 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:48,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:48,359 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:49,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:49,315 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:49,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107369425]
[2022-01-31 17:24:49,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2107369425] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:49,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:49,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58
[2022-01-31 17:24:49,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044741319]
[2022-01-31 17:24:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:49,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states
[2022-01-31 17:24:49,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants.
[2022-01-31 17:24:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306
[2022-01-31 17:24:49,317 INFO L87 Difference]: Start difference. First operand 180 states and 190 transitions. Second operand has 58 states, 58 states have (on average 2.6379310344827585) internal successors, (153), 57 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:50,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:50,513 INFO L93 Difference]: Finished difference Result 248 states and 268 transitions.
[2022-01-31 17:24:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2022-01-31 17:24:50,514 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.6379310344827585) internal successors, (153), 57 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175
[2022-01-31 17:24:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:50,514 INFO L225 Difference]: With dead ends: 248
[2022-01-31 17:24:50,514 INFO L226 Difference]: Without dead ends: 183
[2022-01-31 17:24:50,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656
[2022-01-31 17:24:50,515 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 159 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:50,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 60 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2022-01-31 17:24:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182.
[2022-01-31 17:24:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 176 states have (on average 1.0625) internal successors, (187), 176 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 17:24:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions.
[2022-01-31 17:24:50,535 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 175
[2022-01-31 17:24:50,535 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:50,535 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 192 transitions.
[2022-01-31 17:24:50,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.6379310344827585) internal successors, (153), 57 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 192 transitions.
[2022-01-31 17:24:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2022-01-31 17:24:50,536 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:50,536 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:50,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57
[2022-01-31 17:24:50,536 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:50,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash -563827743, now seen corresponding path program 55 times
[2022-01-31 17:24:50,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:50,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973433296]
[2022-01-31 17:24:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:50,538 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:50,538 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:50,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:50,542 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:51,573 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973433296]
[2022-01-31 17:24:51,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [973433296] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:51,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:51,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59
[2022-01-31 17:24:51,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134052533]
[2022-01-31 17:24:51,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:51,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states
[2022-01-31 17:24:51,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:51,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants.
[2022-01-31 17:24:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 17:24:51,575 INFO L87 Difference]: Start difference. First operand 182 states and 192 transitions. Second operand has 59 states, 59 states have (on average 2.6271186440677967) internal successors, (155), 58 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:52,863 INFO L93 Difference]: Finished difference Result 250 states and 270 transitions.
[2022-01-31 17:24:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2022-01-31 17:24:52,864 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.6271186440677967) internal successors, (155), 58 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177
[2022-01-31 17:24:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:52,864 INFO L225 Difference]: With dead ends: 250
[2022-01-31 17:24:52,864 INFO L226 Difference]: Without dead ends: 185
[2022-01-31 17:24:52,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110
[2022-01-31 17:24:52,866 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 161 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:52,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 85 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states.
[2022-01-31 17:24:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184.
[2022-01-31 17:24:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 178 states have (on average 1.0617977528089888) internal successors, (189), 178 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 17:24:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 194 transitions.
[2022-01-31 17:24:52,887 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 194 transitions. Word has length 177
[2022-01-31 17:24:52,887 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:52,887 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 194 transitions.
[2022-01-31 17:24:52,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.6271186440677967) internal successors, (155), 58 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 194 transitions.
[2022-01-31 17:24:52,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180
[2022-01-31 17:24:52,887 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:52,888 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:52,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58
[2022-01-31 17:24:52,888 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:52,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:52,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1321189503, now seen corresponding path program 56 times
[2022-01-31 17:24:52,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:52,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958898647]
[2022-01-31 17:24:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:52,889 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:52,889 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:52,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:52,894 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:53,915 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:53,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958898647]
[2022-01-31 17:24:53,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1958898647] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:53,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:53,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60
[2022-01-31 17:24:53,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355499849]
[2022-01-31 17:24:53,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:53,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states
[2022-01-31 17:24:53,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:53,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants.
[2022-01-31 17:24:53,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540
[2022-01-31 17:24:53,917 INFO L87 Difference]: Start difference. First operand 184 states and 194 transitions. Second operand has 60 states, 60 states have (on average 2.6166666666666667) internal successors, (157), 59 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:55,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:55,247 INFO L93 Difference]: Finished difference Result 252 states and 272 transitions.
[2022-01-31 17:24:55,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-01-31 17:24:55,247 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.6166666666666667) internal successors, (157), 59 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179
[2022-01-31 17:24:55,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:55,248 INFO L225 Difference]: With dead ends: 252
[2022-01-31 17:24:55,248 INFO L226 Difference]: Without dead ends: 187
[2022-01-31 17:24:55,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572
[2022-01-31 17:24:55,250 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 163 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:55,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 80 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states.
[2022-01-31 17:24:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186.
[2022-01-31 17:24:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.0611111111111111) internal successors, (191), 180 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 17:24:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 196 transitions.
[2022-01-31 17:24:55,274 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 196 transitions. Word has length 179
[2022-01-31 17:24:55,275 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:55,275 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 196 transitions.
[2022-01-31 17:24:55,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.6166666666666667) internal successors, (157), 59 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 196 transitions.
[2022-01-31 17:24:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182
[2022-01-31 17:24:55,275 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:55,276 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:55,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59
[2022-01-31 17:24:55,276 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash 346563997, now seen corresponding path program 57 times
[2022-01-31 17:24:55,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:55,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241748836]
[2022-01-31 17:24:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:55,277 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:55,277 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:55,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:55,283 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:56,353 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:56,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241748836]
[2022-01-31 17:24:56,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1241748836] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:56,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:56,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61
[2022-01-31 17:24:56,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84079593]
[2022-01-31 17:24:56,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:56,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states
[2022-01-31 17:24:56,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:56,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants.
[2022-01-31 17:24:56,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 17:24:56,355 INFO L87 Difference]: Start difference. First operand 186 states and 196 transitions. Second operand has 61 states, 61 states have (on average 2.6065573770491803) internal successors, (159), 60 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:57,672 INFO L93 Difference]: Finished difference Result 254 states and 274 transitions.
[2022-01-31 17:24:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2022-01-31 17:24:57,672 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.6065573770491803) internal successors, (159), 60 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181
[2022-01-31 17:24:57,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:57,673 INFO L225 Difference]: With dead ends: 254
[2022-01-31 17:24:57,673 INFO L226 Difference]: Without dead ends: 189
[2022-01-31 17:24:57,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042
[2022-01-31 17:24:57,675 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 165 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:57,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 70 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:57,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states.
[2022-01-31 17:24:57,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188.
[2022-01-31 17:24:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.0604395604395604) internal successors, (193), 182 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 17:24:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 198 transitions.
[2022-01-31 17:24:57,704 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 198 transitions. Word has length 181
[2022-01-31 17:24:57,704 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:57,705 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 198 transitions.
[2022-01-31 17:24:57,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.6065573770491803) internal successors, (159), 60 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 198 transitions.
[2022-01-31 17:24:57,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184
[2022-01-31 17:24:57,705 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:57,705 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:57,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60
[2022-01-31 17:24:57,705 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:57,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:57,706 INFO L85 PathProgramCache]: Analyzing trace with hash 34323259, now seen corresponding path program 58 times
[2022-01-31 17:24:57,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:57,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253558015]
[2022-01-31 17:24:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:57,707 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:57,707 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:57,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:57,712 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:58,777 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:58,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253558015]
[2022-01-31 17:24:58,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [253558015] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:58,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:58,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62
[2022-01-31 17:24:58,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433940936]
[2022-01-31 17:24:58,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:58,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states
[2022-01-31 17:24:58,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:58,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants.
[2022-01-31 17:24:58,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782
[2022-01-31 17:24:58,779 INFO L87 Difference]: Start difference. First operand 188 states and 198 transitions. Second operand has 62 states, 62 states have (on average 2.596774193548387) internal successors, (161), 61 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:00,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:00,179 INFO L93 Difference]: Finished difference Result 256 states and 276 transitions.
[2022-01-31 17:25:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2022-01-31 17:25:00,179 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.596774193548387) internal successors, (161), 61 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183
[2022-01-31 17:25:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:00,180 INFO L225 Difference]: With dead ends: 256
[2022-01-31 17:25:00,180 INFO L226 Difference]: Without dead ends: 191
[2022-01-31 17:25:00,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520
[2022-01-31 17:25:00,181 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 167 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:00,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 75 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:00,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states.
[2022-01-31 17:25:00,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190.
[2022-01-31 17:25:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 184 states have (on average 1.059782608695652) internal successors, (195), 184 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 17:25:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 200 transitions.
[2022-01-31 17:25:00,203 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 200 transitions. Word has length 183
[2022-01-31 17:25:00,203 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:00,203 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 200 transitions.
[2022-01-31 17:25:00,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.596774193548387) internal successors, (161), 61 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 200 transitions.
[2022-01-31 17:25:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186
[2022-01-31 17:25:00,203 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:00,204 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:00,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61
[2022-01-31 17:25:00,204 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:00,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash 618684761, now seen corresponding path program 59 times
[2022-01-31 17:25:00,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:00,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134184775]
[2022-01-31 17:25:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:00,205 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:00,205 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:00,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:00,210 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:01,336 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:01,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134184775]
[2022-01-31 17:25:01,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1134184775] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:01,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:01,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63
[2022-01-31 17:25:01,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154605780]
[2022-01-31 17:25:01,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:01,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states
[2022-01-31 17:25:01,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants.
[2022-01-31 17:25:01,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 17:25:01,338 INFO L87 Difference]: Start difference. First operand 190 states and 200 transitions. Second operand has 63 states, 63 states have (on average 2.5873015873015874) internal successors, (163), 62 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:02,777 INFO L93 Difference]: Finished difference Result 258 states and 278 transitions.
[2022-01-31 17:25:02,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2022-01-31 17:25:02,777 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.5873015873015874) internal successors, (163), 62 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185
[2022-01-31 17:25:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:02,778 INFO L225 Difference]: With dead ends: 258
[2022-01-31 17:25:02,778 INFO L226 Difference]: Without dead ends: 193
[2022-01-31 17:25:02,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006
[2022-01-31 17:25:02,779 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 169 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:02,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 80 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2022-01-31 17:25:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192.
[2022-01-31 17:25:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 186 states have (on average 1.0591397849462365) internal successors, (197), 186 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 17:25:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 202 transitions.
[2022-01-31 17:25:02,802 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 202 transitions. Word has length 185
[2022-01-31 17:25:02,802 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:02,802 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 202 transitions.
[2022-01-31 17:25:02,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.5873015873015874) internal successors, (163), 62 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:02,802 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 202 transitions.
[2022-01-31 17:25:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2022-01-31 17:25:02,802 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:02,802 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:02,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62
[2022-01-31 17:25:02,803 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash -450627593, now seen corresponding path program 60 times
[2022-01-31 17:25:02,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:02,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244698473]
[2022-01-31 17:25:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:02,804 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:02,804 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:02,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:02,809 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:03,981 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:03,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244698473]
[2022-01-31 17:25:03,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1244698473] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:03,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:03,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64
[2022-01-31 17:25:03,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032956318]
[2022-01-31 17:25:03,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:03,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states
[2022-01-31 17:25:03,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:03,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants.
[2022-01-31 17:25:03,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032
[2022-01-31 17:25:03,982 INFO L87 Difference]: Start difference. First operand 192 states and 202 transitions. Second operand has 64 states, 64 states have (on average 2.578125) internal successors, (165), 63 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:05,440 INFO L93 Difference]: Finished difference Result 260 states and 280 transitions.
[2022-01-31 17:25:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2022-01-31 17:25:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.578125) internal successors, (165), 63 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 187
[2022-01-31 17:25:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:05,442 INFO L225 Difference]: With dead ends: 260
[2022-01-31 17:25:05,442 INFO L226 Difference]: Without dead ends: 195
[2022-01-31 17:25:05,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500
[2022-01-31 17:25:05,444 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 171 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:05,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 80 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states.
[2022-01-31 17:25:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194.
[2022-01-31 17:25:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 188 states have (on average 1.0585106382978724) internal successors, (199), 188 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 17:25:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 204 transitions.
[2022-01-31 17:25:05,468 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 204 transitions. Word has length 187
[2022-01-31 17:25:05,468 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:05,468 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 204 transitions.
[2022-01-31 17:25:05,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.578125) internal successors, (165), 63 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:05,468 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 204 transitions.
[2022-01-31 17:25:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190
[2022-01-31 17:25:05,469 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:05,469 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:05,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63
[2022-01-31 17:25:05,469 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:05,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1562616043, now seen corresponding path program 61 times
[2022-01-31 17:25:05,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:05,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486435662]
[2022-01-31 17:25:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:05,471 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:05,471 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:05,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:05,476 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:06,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:06,657 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 17:25:06,657 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:06,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486435662]
[2022-01-31 17:25:06,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [486435662] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:06,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:06,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65
[2022-01-31 17:25:06,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661622044]
[2022-01-31 17:25:06,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:06,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states
[2022-01-31 17:25:06,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:06,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants.
[2022-01-31 17:25:06,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 17:25:06,659 INFO L87 Difference]: Start difference. First operand 194 states and 204 transitions. Second operand has 65 states, 65 states have (on average 2.5692307692307694) internal successors, (167), 64 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:08,163 INFO L93 Difference]: Finished difference Result 262 states and 282 transitions.
[2022-01-31 17:25:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2022-01-31 17:25:08,163 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.5692307692307694) internal successors, (167), 64 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189
[2022-01-31 17:25:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:08,164 INFO L225 Difference]: With dead ends: 262
[2022-01-31 17:25:08,164 INFO L226 Difference]: Without dead ends: 197
[2022-01-31 17:25:08,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002
[2022-01-31 17:25:08,165 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 173 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:08,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 70 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states.
[2022-01-31 17:25:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196.
[2022-01-31 17:25:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 190 states have (on average 1.0578947368421052) internal successors, (201), 190 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 17:25:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 206 transitions.
[2022-01-31 17:25:08,189 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 206 transitions. Word has length 189
[2022-01-31 17:25:08,189 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:08,189 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 206 transitions.
[2022-01-31 17:25:08,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.5692307692307694) internal successors, (167), 64 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:08,189 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 206 transitions.
[2022-01-31 17:25:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192
[2022-01-31 17:25:08,190 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:08,190 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:08,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64
[2022-01-31 17:25:08,190 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:08,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash -736659789, now seen corresponding path program 62 times
[2022-01-31 17:25:08,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:08,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004240193]
[2022-01-31 17:25:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:08,192 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:08,192 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:08,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:08,197 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:09,398 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:09,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004240193]
[2022-01-31 17:25:09,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004240193] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:09,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:09,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66
[2022-01-31 17:25:09,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035891055]
[2022-01-31 17:25:09,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:09,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states
[2022-01-31 17:25:09,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2022-01-31 17:25:09,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290
[2022-01-31 17:25:09,400 INFO L87 Difference]: Start difference. First operand 196 states and 206 transitions. Second operand has 66 states, 66 states have (on average 2.5606060606060606) internal successors, (169), 65 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:10,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:10,952 INFO L93 Difference]: Finished difference Result 264 states and 284 transitions.
[2022-01-31 17:25:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2022-01-31 17:25:10,952 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.5606060606060606) internal successors, (169), 65 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191
[2022-01-31 17:25:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:10,953 INFO L225 Difference]: With dead ends: 264
[2022-01-31 17:25:10,953 INFO L226 Difference]: Without dead ends: 199
[2022-01-31 17:25:10,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512
[2022-01-31 17:25:10,955 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 175 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:10,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 70 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:10,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states.
[2022-01-31 17:25:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198.
[2022-01-31 17:25:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.0572916666666667) internal successors, (203), 192 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 17:25:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 208 transitions.
[2022-01-31 17:25:10,980 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 208 transitions. Word has length 191
[2022-01-31 17:25:10,980 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:10,980 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 208 transitions.
[2022-01-31 17:25:10,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.5606060606060606) internal successors, (169), 65 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 208 transitions.
[2022-01-31 17:25:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2022-01-31 17:25:10,981 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:10,981 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:10,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65
[2022-01-31 17:25:10,981 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1561649455, now seen corresponding path program 63 times
[2022-01-31 17:25:10,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:10,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962331267]
[2022-01-31 17:25:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:10,983 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:10,983 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:10,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:10,988 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:12,223 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962331267]
[2022-01-31 17:25:12,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1962331267] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:12,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:12,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67
[2022-01-31 17:25:12,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474459784]
[2022-01-31 17:25:12,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:12,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states
[2022-01-31 17:25:12,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:12,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants.
[2022-01-31 17:25:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 17:25:12,225 INFO L87 Difference]: Start difference. First operand 198 states and 208 transitions. Second operand has 67 states, 67 states have (on average 2.5522388059701493) internal successors, (171), 66 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:13,800 INFO L93 Difference]: Finished difference Result 266 states and 286 transitions.
[2022-01-31 17:25:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2022-01-31 17:25:13,801 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.5522388059701493) internal successors, (171), 66 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193
[2022-01-31 17:25:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:13,801 INFO L225 Difference]: With dead ends: 266
[2022-01-31 17:25:13,801 INFO L226 Difference]: Without dead ends: 201
[2022-01-31 17:25:13,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030
[2022-01-31 17:25:13,803 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 177 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:13,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 65 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states.
[2022-01-31 17:25:13,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200.
[2022-01-31 17:25:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.056701030927835) internal successors, (205), 194 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 17:25:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 210 transitions.
[2022-01-31 17:25:13,828 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 210 transitions. Word has length 193
[2022-01-31 17:25:13,829 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:13,829 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 210 transitions.
[2022-01-31 17:25:13,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.5522388059701493) internal successors, (171), 66 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 210 transitions.
[2022-01-31 17:25:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196
[2022-01-31 17:25:13,829 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:13,829 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:13,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66
[2022-01-31 17:25:13,830 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash 192231279, now seen corresponding path program 64 times
[2022-01-31 17:25:13,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:13,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977925705]
[2022-01-31 17:25:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:13,831 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:13,832 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:13,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:13,837 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:15,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:15,105 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:15,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977925705]
[2022-01-31 17:25:15,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [977925705] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:15,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:15,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68
[2022-01-31 17:25:15,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158355637]
[2022-01-31 17:25:15,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:15,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states
[2022-01-31 17:25:15,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:15,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants.
[2022-01-31 17:25:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556
[2022-01-31 17:25:15,107 INFO L87 Difference]: Start difference. First operand 200 states and 210 transitions. Second operand has 68 states, 68 states have (on average 2.5441176470588234) internal successors, (173), 67 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:16,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:16,742 INFO L93 Difference]: Finished difference Result 268 states and 288 transitions.
[2022-01-31 17:25:16,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2022-01-31 17:25:16,743 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.5441176470588234) internal successors, (173), 67 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195
[2022-01-31 17:25:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:16,743 INFO L225 Difference]: With dead ends: 268
[2022-01-31 17:25:16,743 INFO L226 Difference]: Without dead ends: 203
[2022-01-31 17:25:16,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556
[2022-01-31 17:25:16,745 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 179 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:16,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 75 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states.
[2022-01-31 17:25:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202.
[2022-01-31 17:25:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.0561224489795917) internal successors, (207), 196 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 17:25:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 212 transitions.
[2022-01-31 17:25:16,771 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 212 transitions. Word has length 195
[2022-01-31 17:25:16,771 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:16,771 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 212 transitions.
[2022-01-31 17:25:16,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.5441176470588234) internal successors, (173), 67 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 212 transitions.
[2022-01-31 17:25:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2022-01-31 17:25:16,772 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:16,772 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:16,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67
[2022-01-31 17:25:16,772 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2044436621, now seen corresponding path program 65 times
[2022-01-31 17:25:16,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:16,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147905894]
[2022-01-31 17:25:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:16,774 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:16,774 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:16,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:16,780 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:18,120 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:18,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147905894]
[2022-01-31 17:25:18,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [147905894] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:18,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:18,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69
[2022-01-31 17:25:18,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189967252]
[2022-01-31 17:25:18,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:18,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states
[2022-01-31 17:25:18,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:18,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants.
[2022-01-31 17:25:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 17:25:18,122 INFO L87 Difference]: Start difference. First operand 202 states and 212 transitions. Second operand has 69 states, 69 states have (on average 2.536231884057971) internal successors, (175), 68 states have internal predecessors, (175), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:19,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:19,897 INFO L93 Difference]: Finished difference Result 270 states and 290 transitions.
[2022-01-31 17:25:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-01-31 17:25:19,897 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.536231884057971) internal successors, (175), 68 states have internal predecessors, (175), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197
[2022-01-31 17:25:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:19,898 INFO L225 Difference]: With dead ends: 270
[2022-01-31 17:25:19,898 INFO L226 Difference]: Without dead ends: 205
[2022-01-31 17:25:19,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090
[2022-01-31 17:25:19,899 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 181 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:19,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 115 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:25:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states.
[2022-01-31 17:25:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204.
[2022-01-31 17:25:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 198 states have (on average 1.0555555555555556) internal successors, (209), 198 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 17:25:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 214 transitions.
[2022-01-31 17:25:19,925 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 214 transitions. Word has length 197
[2022-01-31 17:25:19,925 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:19,926 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 214 transitions.
[2022-01-31 17:25:19,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.536231884057971) internal successors, (175), 68 states have internal predecessors, (175), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 214 transitions.
[2022-01-31 17:25:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200
[2022-01-31 17:25:19,926 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:19,926 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:19,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68
[2022-01-31 17:25:19,927 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:19,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:19,927 INFO L85 PathProgramCache]: Analyzing trace with hash -397657557, now seen corresponding path program 66 times
[2022-01-31 17:25:19,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:19,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208033522]
[2022-01-31 17:25:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:19,928 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:19,928 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:19,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:19,934 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:21,356 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:21,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208033522]
[2022-01-31 17:25:21,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [208033522] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:21,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:21,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70
[2022-01-31 17:25:21,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916380969]
[2022-01-31 17:25:21,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:21,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states
[2022-01-31 17:25:21,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants.
[2022-01-31 17:25:21,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830
[2022-01-31 17:25:21,359 INFO L87 Difference]: Start difference. First operand 204 states and 214 transitions. Second operand has 70 states, 70 states have (on average 2.5285714285714285) internal successors, (177), 69 states have internal predecessors, (177), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:23,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:23,217 INFO L93 Difference]: Finished difference Result 272 states and 292 transitions.
[2022-01-31 17:25:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states.
[2022-01-31 17:25:23,217 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.5285714285714285) internal successors, (177), 69 states have internal predecessors, (177), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199
[2022-01-31 17:25:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:23,218 INFO L225 Difference]: With dead ends: 272
[2022-01-31 17:25:23,218 INFO L226 Difference]: Without dead ends: 207
[2022-01-31 17:25:23,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632
[2022-01-31 17:25:23,219 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 183 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:23,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 95 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:23,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2022-01-31 17:25:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206.
[2022-01-31 17:25:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 200 states have (on average 1.055) internal successors, (211), 200 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 17:25:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 216 transitions.
[2022-01-31 17:25:23,247 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 216 transitions. Word has length 199
[2022-01-31 17:25:23,248 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:23,248 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 216 transitions.
[2022-01-31 17:25:23,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.5285714285714285) internal successors, (177), 69 states have internal predecessors, (177), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 216 transitions.
[2022-01-31 17:25:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202
[2022-01-31 17:25:23,249 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:23,249 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:23,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69
[2022-01-31 17:25:23,249 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2096948297, now seen corresponding path program 67 times
[2022-01-31 17:25:23,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:23,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157819844]
[2022-01-31 17:25:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:23,251 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:23,251 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:23,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:23,257 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:24,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:24,684 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:24,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157819844]
[2022-01-31 17:25:24,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1157819844] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:24,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:24,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71
[2022-01-31 17:25:24,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137773882]
[2022-01-31 17:25:24,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:24,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states
[2022-01-31 17:25:24,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:24,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants.
[2022-01-31 17:25:24,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 17:25:24,689 INFO L87 Difference]: Start difference. First operand 206 states and 216 transitions. Second operand has 71 states, 71 states have (on average 2.5211267605633805) internal successors, (179), 70 states have internal predecessors, (179), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:26,534 INFO L93 Difference]: Finished difference Result 274 states and 294 transitions.
[2022-01-31 17:25:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2022-01-31 17:25:26,535 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.5211267605633805) internal successors, (179), 70 states have internal predecessors, (179), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201
[2022-01-31 17:25:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:26,536 INFO L225 Difference]: With dead ends: 274
[2022-01-31 17:25:26,536 INFO L226 Difference]: Without dead ends: 209
[2022-01-31 17:25:26,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182
[2022-01-31 17:25:26,537 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 185 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:26,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 70 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states.
[2022-01-31 17:25:26,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208.
[2022-01-31 17:25:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 202 states have (on average 1.0544554455445545) internal successors, (213), 202 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 17:25:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 218 transitions.
[2022-01-31 17:25:26,566 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 218 transitions. Word has length 201
[2022-01-31 17:25:26,566 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:26,566 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 218 transitions.
[2022-01-31 17:25:26,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.5211267605633805) internal successors, (179), 70 states have internal predecessors, (179), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:26,566 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 218 transitions.
[2022-01-31 17:25:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204
[2022-01-31 17:25:26,567 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:26,567 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:26,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70
[2022-01-31 17:25:26,567 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:26,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:26,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1473544473, now seen corresponding path program 68 times
[2022-01-31 17:25:26,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:26,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669038033]
[2022-01-31 17:25:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:26,570 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:26,570 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:26,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:26,576 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:28,020 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:28,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669038033]
[2022-01-31 17:25:28,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [669038033] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:28,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:28,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72
[2022-01-31 17:25:28,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387036749]
[2022-01-31 17:25:28,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:28,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states
[2022-01-31 17:25:28,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:28,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants.
[2022-01-31 17:25:28,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112
[2022-01-31 17:25:28,021 INFO L87 Difference]: Start difference. First operand 208 states and 218 transitions. Second operand has 72 states, 72 states have (on average 2.513888888888889) internal successors, (181), 71 states have internal predecessors, (181), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:29,872 INFO L93 Difference]: Finished difference Result 276 states and 296 transitions.
[2022-01-31 17:25:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2022-01-31 17:25:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.513888888888889) internal successors, (181), 71 states have internal predecessors, (181), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 203
[2022-01-31 17:25:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:29,873 INFO L225 Difference]: With dead ends: 276
[2022-01-31 17:25:29,873 INFO L226 Difference]: Without dead ends: 211
[2022-01-31 17:25:29,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740
[2022-01-31 17:25:29,876 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 187 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:29,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 75 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states.
[2022-01-31 17:25:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210.
[2022-01-31 17:25:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 204 states have (on average 1.053921568627451) internal successors, (215), 204 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 17:25:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 220 transitions.
[2022-01-31 17:25:29,913 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 220 transitions. Word has length 203
[2022-01-31 17:25:29,913 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:29,913 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 220 transitions.
[2022-01-31 17:25:29,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.513888888888889) internal successors, (181), 71 states have internal predecessors, (181), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 220 transitions.
[2022-01-31 17:25:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206
[2022-01-31 17:25:29,914 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:29,914 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:29,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71
[2022-01-31 17:25:29,914 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:29,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1038226939, now seen corresponding path program 69 times
[2022-01-31 17:25:29,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:29,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631176103]
[2022-01-31 17:25:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:29,916 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:29,916 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:29,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:29,922 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:31,379 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:31,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631176103]
[2022-01-31 17:25:31,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [631176103] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:31,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:31,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73
[2022-01-31 17:25:31,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28235593]
[2022-01-31 17:25:31,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:31,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states
[2022-01-31 17:25:31,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants.
[2022-01-31 17:25:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 17:25:31,381 INFO L87 Difference]: Start difference. First operand 210 states and 220 transitions. Second operand has 73 states, 73 states have (on average 2.506849315068493) internal successors, (183), 72 states have internal predecessors, (183), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:33,299 INFO L93 Difference]: Finished difference Result 278 states and 298 transitions.
[2022-01-31 17:25:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states.
[2022-01-31 17:25:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.506849315068493) internal successors, (183), 72 states have internal predecessors, (183), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205
[2022-01-31 17:25:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:33,300 INFO L225 Difference]: With dead ends: 278
[2022-01-31 17:25:33,300 INFO L226 Difference]: Without dead ends: 213
[2022-01-31 17:25:33,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306
[2022-01-31 17:25:33,302 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 189 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:33,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 95 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states.
[2022-01-31 17:25:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212.
[2022-01-31 17:25:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 206 states have (on average 1.0533980582524272) internal successors, (217), 206 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 17:25:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 222 transitions.
[2022-01-31 17:25:33,332 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 222 transitions. Word has length 205
[2022-01-31 17:25:33,332 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:33,332 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 222 transitions.
[2022-01-31 17:25:33,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.506849315068493) internal successors, (183), 72 states have internal predecessors, (183), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:33,333 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 222 transitions.
[2022-01-31 17:25:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2022-01-31 17:25:33,333 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:33,333 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:33,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72
[2022-01-31 17:25:33,334 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:33,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash 690095523, now seen corresponding path program 70 times
[2022-01-31 17:25:33,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:33,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477189280]
[2022-01-31 17:25:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:33,335 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:33,335 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:33,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:33,342 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:34,861 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:34,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477189280]
[2022-01-31 17:25:34,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1477189280] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:34,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:34,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74
[2022-01-31 17:25:34,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44071695]
[2022-01-31 17:25:34,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:34,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states
[2022-01-31 17:25:34,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:34,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants.
[2022-01-31 17:25:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402
[2022-01-31 17:25:34,863 INFO L87 Difference]: Start difference. First operand 212 states and 222 transitions. Second operand has 74 states, 74 states have (on average 2.5) internal successors, (185), 73 states have internal predecessors, (185), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:36,819 INFO L93 Difference]: Finished difference Result 280 states and 300 transitions.
[2022-01-31 17:25:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2022-01-31 17:25:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.5) internal successors, (185), 73 states have internal predecessors, (185), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207
[2022-01-31 17:25:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:36,820 INFO L225 Difference]: With dead ends: 280
[2022-01-31 17:25:36,820 INFO L226 Difference]: Without dead ends: 215
[2022-01-31 17:25:36,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880
[2022-01-31 17:25:36,821 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 191 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:36,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 85 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states.
[2022-01-31 17:25:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214.
[2022-01-31 17:25:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.0528846153846154) internal successors, (219), 208 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 17:25:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 224 transitions.
[2022-01-31 17:25:36,851 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 224 transitions. Word has length 207
[2022-01-31 17:25:36,852 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:36,852 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 224 transitions.
[2022-01-31 17:25:36,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.5) internal successors, (185), 73 states have internal predecessors, (185), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 224 transitions.
[2022-01-31 17:25:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210
[2022-01-31 17:25:36,852 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:36,852 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:36,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73
[2022-01-31 17:25:36,853 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:36,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:36,853 INFO L85 PathProgramCache]: Analyzing trace with hash -544362047, now seen corresponding path program 71 times
[2022-01-31 17:25:36,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:36,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828660700]
[2022-01-31 17:25:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:36,854 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:36,854 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:36,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:36,861 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:38,416 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:38,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828660700]
[2022-01-31 17:25:38,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1828660700] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:38,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:38,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75
[2022-01-31 17:25:38,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942295803]
[2022-01-31 17:25:38,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:38,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states
[2022-01-31 17:25:38,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:38,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants.
[2022-01-31 17:25:38,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 17:25:38,417 INFO L87 Difference]: Start difference. First operand 214 states and 224 transitions. Second operand has 75 states, 75 states have (on average 2.493333333333333) internal successors, (187), 74 states have internal predecessors, (187), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:40,401 INFO L93 Difference]: Finished difference Result 282 states and 302 transitions.
[2022-01-31 17:25:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2022-01-31 17:25:40,401 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.493333333333333) internal successors, (187), 74 states have internal predecessors, (187), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209
[2022-01-31 17:25:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:40,402 INFO L225 Difference]: With dead ends: 282
[2022-01-31 17:25:40,402 INFO L226 Difference]: Without dead ends: 217
[2022-01-31 17:25:40,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462
[2022-01-31 17:25:40,403 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 193 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:40,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 75 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:40,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states.
[2022-01-31 17:25:40,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216.
[2022-01-31 17:25:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 210 states have (on average 1.0523809523809524) internal successors, (221), 210 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 17:25:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 226 transitions.
[2022-01-31 17:25:40,434 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 226 transitions. Word has length 209
[2022-01-31 17:25:40,434 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:40,434 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 226 transitions.
[2022-01-31 17:25:40,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.493333333333333) internal successors, (187), 74 states have internal predecessors, (187), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 226 transitions.
[2022-01-31 17:25:40,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212
[2022-01-31 17:25:40,435 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:40,435 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:40,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74
[2022-01-31 17:25:40,436 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:40,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1447113121, now seen corresponding path program 72 times
[2022-01-31 17:25:40,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:40,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415651648]
[2022-01-31 17:25:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:40,437 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:40,437 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:40,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:40,444 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:42,027 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:42,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415651648]
[2022-01-31 17:25:42,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [415651648] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:42,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:42,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76
[2022-01-31 17:25:42,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183936042]
[2022-01-31 17:25:42,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:42,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states
[2022-01-31 17:25:42,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:42,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants.
[2022-01-31 17:25:42,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700
[2022-01-31 17:25:42,029 INFO L87 Difference]: Start difference. First operand 216 states and 226 transitions. Second operand has 76 states, 76 states have (on average 2.486842105263158) internal successors, (189), 75 states have internal predecessors, (189), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:44,125 INFO L93 Difference]: Finished difference Result 284 states and 304 transitions.
[2022-01-31 17:25:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states.
[2022-01-31 17:25:44,125 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.486842105263158) internal successors, (189), 75 states have internal predecessors, (189), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211
[2022-01-31 17:25:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:44,126 INFO L225 Difference]: With dead ends: 284
[2022-01-31 17:25:44,126 INFO L226 Difference]: Without dead ends: 219
[2022-01-31 17:25:44,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052
[2022-01-31 17:25:44,128 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 195 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:44,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 95 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:44,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states.
[2022-01-31 17:25:44,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218.
[2022-01-31 17:25:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.0518867924528301) internal successors, (223), 212 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 17:25:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 228 transitions.
[2022-01-31 17:25:44,169 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 228 transitions. Word has length 211
[2022-01-31 17:25:44,169 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:44,169 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 228 transitions.
[2022-01-31 17:25:44,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.486842105263158) internal successors, (189), 75 states have internal predecessors, (189), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 228 transitions.
[2022-01-31 17:25:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214
[2022-01-31 17:25:44,175 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:44,175 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:44,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75
[2022-01-31 17:25:44,176 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:44,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1407501443, now seen corresponding path program 73 times
[2022-01-31 17:25:44,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:44,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752914302]
[2022-01-31 17:25:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:44,177 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:44,177 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:44,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:44,184 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:45,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:45,785 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:45,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752914302]
[2022-01-31 17:25:45,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [752914302] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:45,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:45,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77
[2022-01-31 17:25:45,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547937071]
[2022-01-31 17:25:45,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:45,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states
[2022-01-31 17:25:45,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:45,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants.
[2022-01-31 17:25:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 17:25:45,787 INFO L87 Difference]: Start difference. First operand 218 states and 228 transitions. Second operand has 77 states, 77 states have (on average 2.4805194805194803) internal successors, (191), 76 states have internal predecessors, (191), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:47,902 INFO L93 Difference]: Finished difference Result 286 states and 306 transitions.
[2022-01-31 17:25:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2022-01-31 17:25:47,902 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.4805194805194803) internal successors, (191), 76 states have internal predecessors, (191), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213
[2022-01-31 17:25:47,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:47,903 INFO L225 Difference]: With dead ends: 286
[2022-01-31 17:25:47,903 INFO L226 Difference]: Without dead ends: 221
[2022-01-31 17:25:47,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650
[2022-01-31 17:25:47,905 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 197 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:47,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 80 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states.
[2022-01-31 17:25:47,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220.
[2022-01-31 17:25:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.0514018691588785) internal successors, (225), 214 states have internal predecessors, (225), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 230 transitions.
[2022-01-31 17:25:47,939 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 230 transitions. Word has length 213
[2022-01-31 17:25:47,940 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:47,940 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 230 transitions.
[2022-01-31 17:25:47,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.4805194805194803) internal successors, (191), 76 states have internal predecessors, (191), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 230 transitions.
[2022-01-31 17:25:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2022-01-31 17:25:47,940 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:47,941 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:47,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76
[2022-01-31 17:25:47,941 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:47,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1995384549, now seen corresponding path program 74 times
[2022-01-31 17:25:47,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:47,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325982045]
[2022-01-31 17:25:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:47,947 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:47,947 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:47,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:47,954 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:49,670 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:49,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325982045]
[2022-01-31 17:25:49,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1325982045] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:49,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:49,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78
[2022-01-31 17:25:49,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509682481]
[2022-01-31 17:25:49,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:49,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states
[2022-01-31 17:25:49,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:49,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants.
[2022-01-31 17:25:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006
[2022-01-31 17:25:49,672 INFO L87 Difference]: Start difference. First operand 220 states and 230 transitions. Second operand has 78 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 77 states have internal predecessors, (193), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:51,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:51,816 INFO L93 Difference]: Finished difference Result 288 states and 308 transitions.
[2022-01-31 17:25:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2022-01-31 17:25:51,817 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 77 states have internal predecessors, (193), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215
[2022-01-31 17:25:51,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:51,817 INFO L225 Difference]: With dead ends: 288
[2022-01-31 17:25:51,817 INFO L226 Difference]: Without dead ends: 223
[2022-01-31 17:25:51,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256
[2022-01-31 17:25:51,819 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 199 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:51,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 85 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2022-01-31 17:25:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222.
[2022-01-31 17:25:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 216 states have (on average 1.0509259259259258) internal successors, (227), 216 states have internal predecessors, (227), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 232 transitions.
[2022-01-31 17:25:51,853 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 232 transitions. Word has length 215
[2022-01-31 17:25:51,853 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:51,853 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 232 transitions.
[2022-01-31 17:25:51,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 77 states have internal predecessors, (193), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:51,854 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 232 transitions.
[2022-01-31 17:25:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218
[2022-01-31 17:25:51,854 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:51,854 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:51,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77
[2022-01-31 17:25:51,854 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash -15366343, now seen corresponding path program 75 times
[2022-01-31 17:25:51,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:51,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812886083]
[2022-01-31 17:25:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:51,856 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:51,856 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:51,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:51,863 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:53,573 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:53,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812886083]
[2022-01-31 17:25:53,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1812886083] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:53,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:53,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79
[2022-01-31 17:25:53,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407113585]
[2022-01-31 17:25:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:53,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states
[2022-01-31 17:25:53,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:53,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants.
[2022-01-31 17:25:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162
[2022-01-31 17:25:53,575 INFO L87 Difference]: Start difference. First operand 222 states and 232 transitions. Second operand has 79 states, 79 states have (on average 2.4683544303797467) internal successors, (195), 78 states have internal predecessors, (195), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:55,702 INFO L93 Difference]: Finished difference Result 290 states and 310 transitions.
[2022-01-31 17:25:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2022-01-31 17:25:55,703 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.4683544303797467) internal successors, (195), 78 states have internal predecessors, (195), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217
[2022-01-31 17:25:55,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:55,703 INFO L225 Difference]: With dead ends: 290
[2022-01-31 17:25:55,703 INFO L226 Difference]: Without dead ends: 225
[2022-01-31 17:25:55,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870
[2022-01-31 17:25:55,705 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 201 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:55,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 65 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states.
[2022-01-31 17:25:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224.
[2022-01-31 17:25:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 218 states have (on average 1.0504587155963303) internal successors, (229), 218 states have internal predecessors, (229), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 234 transitions.
[2022-01-31 17:25:55,740 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 234 transitions. Word has length 217
[2022-01-31 17:25:55,740 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:55,740 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 234 transitions.
[2022-01-31 17:25:55,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.4683544303797467) internal successors, (195), 78 states have internal predecessors, (195), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:55,740 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 234 transitions.
[2022-01-31 17:25:55,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2022-01-31 17:25:55,741 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:55,741 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:55,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78
[2022-01-31 17:25:55,741 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:55,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash 111617495, now seen corresponding path program 76 times
[2022-01-31 17:25:55,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:55,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230418108]
[2022-01-31 17:25:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:55,742 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:55,743 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:55,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:55,750 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:57,553 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:57,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230418108]
[2022-01-31 17:25:57,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [230418108] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:57,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:57,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80
[2022-01-31 17:25:57,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540544425]
[2022-01-31 17:25:57,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:57,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states
[2022-01-31 17:25:57,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:57,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants.
[2022-01-31 17:25:57,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320
[2022-01-31 17:25:57,555 INFO L87 Difference]: Start difference. First operand 224 states and 234 transitions. Second operand has 80 states, 80 states have (on average 2.4625) internal successors, (197), 79 states have internal predecessors, (197), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:59,810 INFO L93 Difference]: Finished difference Result 292 states and 312 transitions.
[2022-01-31 17:25:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2022-01-31 17:25:59,811 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.4625) internal successors, (197), 79 states have internal predecessors, (197), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219
[2022-01-31 17:25:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:59,811 INFO L225 Difference]: With dead ends: 292
[2022-01-31 17:25:59,811 INFO L226 Difference]: Without dead ends: 227
[2022-01-31 17:25:59,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492
[2022-01-31 17:25:59,813 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 203 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:59,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 95 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states.
[2022-01-31 17:25:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226.
[2022-01-31 17:25:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 220 states have (on average 1.05) internal successors, (231), 220 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 236 transitions.
[2022-01-31 17:25:59,848 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 236 transitions. Word has length 219
[2022-01-31 17:25:59,849 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:59,849 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 236 transitions.
[2022-01-31 17:25:59,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.4625) internal successors, (197), 79 states have internal predecessors, (197), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 236 transitions.
[2022-01-31 17:25:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222
[2022-01-31 17:25:59,849 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:59,849 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:59,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79
[2022-01-31 17:25:59,850 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1884001525, now seen corresponding path program 77 times
[2022-01-31 17:25:59,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:59,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742158100]
[2022-01-31 17:25:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:59,851 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:59,851 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:59,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:59,858 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:01,660 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 17:26:01,660 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:01,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742158100]
[2022-01-31 17:26:01,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [742158100] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:01,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:01,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81
[2022-01-31 17:26:01,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060210288]
[2022-01-31 17:26:01,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:01,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states
[2022-01-31 17:26:01,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants.
[2022-01-31 17:26:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 17:26:01,677 INFO L87 Difference]: Start difference. First operand 226 states and 236 transitions. Second operand has 81 states, 81 states have (on average 2.45679012345679) internal successors, (199), 80 states have internal predecessors, (199), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:03,987 INFO L93 Difference]: Finished difference Result 294 states and 314 transitions.
[2022-01-31 17:26:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2022-01-31 17:26:03,988 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.45679012345679) internal successors, (199), 80 states have internal predecessors, (199), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221
[2022-01-31 17:26:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:03,989 INFO L225 Difference]: With dead ends: 294
[2022-01-31 17:26:03,989 INFO L226 Difference]: Without dead ends: 229
[2022-01-31 17:26:03,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122
[2022-01-31 17:26:03,991 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 205 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:03,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 90 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states.
[2022-01-31 17:26:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228.
[2022-01-31 17:26:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 222 states have (on average 1.0495495495495495) internal successors, (233), 222 states have internal predecessors, (233), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 238 transitions.
[2022-01-31 17:26:04,027 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 238 transitions. Word has length 221
[2022-01-31 17:26:04,027 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:04,027 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 238 transitions.
[2022-01-31 17:26:04,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.45679012345679) internal successors, (199), 80 states have internal predecessors, (199), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:04,027 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 238 transitions.
[2022-01-31 17:26:04,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224
[2022-01-31 17:26:04,028 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:04,028 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:04,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80
[2022-01-31 17:26:04,028 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:04,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:04,028 INFO L85 PathProgramCache]: Analyzing trace with hash 43037843, now seen corresponding path program 78 times
[2022-01-31 17:26:04,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:04,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007378466]
[2022-01-31 17:26:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:04,029 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:04,030 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:04,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:04,037 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:05,855 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:05,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007378466]
[2022-01-31 17:26:05,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2007378466] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:05,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:05,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82
[2022-01-31 17:26:05,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297731983]
[2022-01-31 17:26:05,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:05,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states
[2022-01-31 17:26:05,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:05,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants.
[2022-01-31 17:26:05,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642
[2022-01-31 17:26:05,857 INFO L87 Difference]: Start difference. First operand 228 states and 238 transitions. Second operand has 82 states, 82 states have (on average 2.451219512195122) internal successors, (201), 81 states have internal predecessors, (201), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:08,167 INFO L93 Difference]: Finished difference Result 296 states and 316 transitions.
[2022-01-31 17:26:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states.
[2022-01-31 17:26:08,167 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.451219512195122) internal successors, (201), 81 states have internal predecessors, (201), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223
[2022-01-31 17:26:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:08,168 INFO L225 Difference]: With dead ends: 296
[2022-01-31 17:26:08,168 INFO L226 Difference]: Without dead ends: 231
[2022-01-31 17:26:08,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760
[2022-01-31 17:26:08,170 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 207 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:08,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 75 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states.
[2022-01-31 17:26:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230.
[2022-01-31 17:26:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 224 states have (on average 1.0491071428571428) internal successors, (235), 224 states have internal predecessors, (235), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 240 transitions.
[2022-01-31 17:26:08,226 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 240 transitions. Word has length 223
[2022-01-31 17:26:08,226 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:08,226 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 240 transitions.
[2022-01-31 17:26:08,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.451219512195122) internal successors, (201), 81 states have internal predecessors, (201), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 240 transitions.
[2022-01-31 17:26:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226
[2022-01-31 17:26:08,227 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:08,227 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:08,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81
[2022-01-31 17:26:08,227 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:08,227 INFO L85 PathProgramCache]: Analyzing trace with hash 403465393, now seen corresponding path program 79 times
[2022-01-31 17:26:08,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:08,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397254346]
[2022-01-31 17:26:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:08,229 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:08,229 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:08,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:08,236 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:10,135 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:10,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397254346]
[2022-01-31 17:26:10,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1397254346] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:10,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:10,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83
[2022-01-31 17:26:10,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686495666]
[2022-01-31 17:26:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:10,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states
[2022-01-31 17:26:10,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants.
[2022-01-31 17:26:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 17:26:10,137 INFO L87 Difference]: Start difference. First operand 230 states and 240 transitions. Second operand has 83 states, 83 states have (on average 2.4457831325301207) internal successors, (203), 82 states have internal predecessors, (203), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:12,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:12,554 INFO L93 Difference]: Finished difference Result 298 states and 318 transitions.
[2022-01-31 17:26:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states.
[2022-01-31 17:26:12,554 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.4457831325301207) internal successors, (203), 82 states have internal predecessors, (203), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225
[2022-01-31 17:26:12,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:12,555 INFO L225 Difference]: With dead ends: 298
[2022-01-31 17:26:12,555 INFO L226 Difference]: Without dead ends: 233
[2022-01-31 17:26:12,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406
[2022-01-31 17:26:12,557 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 209 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:12,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 90 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:26:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states.
[2022-01-31 17:26:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232.
[2022-01-31 17:26:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 226 states have (on average 1.0486725663716814) internal successors, (237), 226 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 242 transitions.
[2022-01-31 17:26:12,608 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 242 transitions. Word has length 225
[2022-01-31 17:26:12,608 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:12,608 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 242 transitions.
[2022-01-31 17:26:12,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.4457831325301207) internal successors, (203), 82 states have internal predecessors, (203), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:12,608 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 242 transitions.
[2022-01-31 17:26:12,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228
[2022-01-31 17:26:12,609 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:12,609 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:12,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82
[2022-01-31 17:26:12,609 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:12,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1118010033, now seen corresponding path program 80 times
[2022-01-31 17:26:12,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:12,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648624080]
[2022-01-31 17:26:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:12,610 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:12,611 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:12,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:12,618 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:14,527 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:14,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648624080]
[2022-01-31 17:26:14,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1648624080] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:14,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:14,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84
[2022-01-31 17:26:14,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199858999]
[2022-01-31 17:26:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:14,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states
[2022-01-31 17:26:14,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:14,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants.
[2022-01-31 17:26:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972
[2022-01-31 17:26:14,529 INFO L87 Difference]: Start difference. First operand 232 states and 242 transitions. Second operand has 84 states, 84 states have (on average 2.4404761904761907) internal successors, (205), 83 states have internal predecessors, (205), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:16,955 INFO L93 Difference]: Finished difference Result 300 states and 320 transitions.
[2022-01-31 17:26:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2022-01-31 17:26:16,955 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.4404761904761907) internal successors, (205), 83 states have internal predecessors, (205), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227
[2022-01-31 17:26:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:16,956 INFO L225 Difference]: With dead ends: 300
[2022-01-31 17:26:16,956 INFO L226 Difference]: Without dead ends: 235
[2022-01-31 17:26:16,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060
[2022-01-31 17:26:16,957 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 211 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:16,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 75 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states.
[2022-01-31 17:26:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234.
[2022-01-31 17:26:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 228 states have (on average 1.0482456140350878) internal successors, (239), 228 states have internal predecessors, (239), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 244 transitions.
[2022-01-31 17:26:16,996 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 244 transitions. Word has length 227
[2022-01-31 17:26:16,997 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:16,997 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 244 transitions.
[2022-01-31 17:26:16,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.4404761904761907) internal successors, (205), 83 states have internal predecessors, (205), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 244 transitions.
[2022-01-31 17:26:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230
[2022-01-31 17:26:16,997 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:16,997 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:16,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83
[2022-01-31 17:26:16,998 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1327953517, now seen corresponding path program 81 times
[2022-01-31 17:26:16,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:16,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110692280]
[2022-01-31 17:26:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:17,000 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:17,000 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:17,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:17,009 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:18,987 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 17:26:18,987 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:18,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110692280]
[2022-01-31 17:26:18,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1110692280] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:18,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:18,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85
[2022-01-31 17:26:18,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402605551]
[2022-01-31 17:26:18,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:18,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states
[2022-01-31 17:26:18,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:18,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants.
[2022-01-31 17:26:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 17:26:18,989 INFO L87 Difference]: Start difference. First operand 234 states and 244 transitions. Second operand has 85 states, 85 states have (on average 2.4352941176470586) internal successors, (207), 84 states have internal predecessors, (207), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:21,504 INFO L93 Difference]: Finished difference Result 302 states and 322 transitions.
[2022-01-31 17:26:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2022-01-31 17:26:21,505 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.4352941176470586) internal successors, (207), 84 states have internal predecessors, (207), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229
[2022-01-31 17:26:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:21,505 INFO L225 Difference]: With dead ends: 302
[2022-01-31 17:26:21,506 INFO L226 Difference]: Without dead ends: 237
[2022-01-31 17:26:21,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722
[2022-01-31 17:26:21,507 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 213 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:21,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 90 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states.
[2022-01-31 17:26:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236.
[2022-01-31 17:26:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 230 states have (on average 1.0478260869565217) internal successors, (241), 230 states have internal predecessors, (241), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 246 transitions.
[2022-01-31 17:26:21,548 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 246 transitions. Word has length 229
[2022-01-31 17:26:21,548 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:21,548 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 246 transitions.
[2022-01-31 17:26:21,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.4352941176470586) internal successors, (207), 84 states have internal predecessors, (207), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 246 transitions.
[2022-01-31 17:26:21,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2022-01-31 17:26:21,549 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:21,549 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:21,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84
[2022-01-31 17:26:21,549 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:21,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:21,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1743153141, now seen corresponding path program 82 times
[2022-01-31 17:26:21,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:21,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98228552]
[2022-01-31 17:26:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:21,551 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:21,551 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:21,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:21,559 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:23,604 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:23,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98228552]
[2022-01-31 17:26:23,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [98228552] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:23,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:23,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86
[2022-01-31 17:26:23,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740029177]
[2022-01-31 17:26:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:23,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states
[2022-01-31 17:26:23,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants.
[2022-01-31 17:26:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310
[2022-01-31 17:26:23,606 INFO L87 Difference]: Start difference. First operand 236 states and 246 transitions. Second operand has 86 states, 86 states have (on average 2.4302325581395348) internal successors, (209), 85 states have internal predecessors, (209), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:26,135 INFO L93 Difference]: Finished difference Result 304 states and 324 transitions.
[2022-01-31 17:26:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states.
[2022-01-31 17:26:26,136 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.4302325581395348) internal successors, (209), 85 states have internal predecessors, (209), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231
[2022-01-31 17:26:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:26,137 INFO L225 Difference]: With dead ends: 304
[2022-01-31 17:26:26,137 INFO L226 Difference]: Without dead ends: 239
[2022-01-31 17:26:26,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392
[2022-01-31 17:26:26,139 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 215 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:26,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 85 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states.
[2022-01-31 17:26:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238.
[2022-01-31 17:26:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.0474137931034482) internal successors, (243), 232 states have internal predecessors, (243), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 248 transitions.
[2022-01-31 17:26:26,181 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 248 transitions. Word has length 231
[2022-01-31 17:26:26,181 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:26,181 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 248 transitions.
[2022-01-31 17:26:26,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.4302325581395348) internal successors, (209), 85 states have internal predecessors, (209), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 248 transitions.
[2022-01-31 17:26:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234
[2022-01-31 17:26:26,182 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:26,182 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:26,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85
[2022-01-31 17:26:26,182 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1860848169, now seen corresponding path program 83 times
[2022-01-31 17:26:26,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:26,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514954617]
[2022-01-31 17:26:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:26,184 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:26,184 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:26,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:26,199 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:28,271 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:28,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514954617]
[2022-01-31 17:26:28,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [514954617] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:28,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:28,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87
[2022-01-31 17:26:28,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183525409]
[2022-01-31 17:26:28,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:28,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states
[2022-01-31 17:26:28,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants.
[2022-01-31 17:26:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 17:26:28,273 INFO L87 Difference]: Start difference. First operand 238 states and 248 transitions. Second operand has 87 states, 87 states have (on average 2.425287356321839) internal successors, (211), 86 states have internal predecessors, (211), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:30,846 INFO L93 Difference]: Finished difference Result 306 states and 326 transitions.
[2022-01-31 17:26:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states.
[2022-01-31 17:26:30,846 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.425287356321839) internal successors, (211), 86 states have internal predecessors, (211), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 233
[2022-01-31 17:26:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:30,847 INFO L225 Difference]: With dead ends: 306
[2022-01-31 17:26:30,847 INFO L226 Difference]: Without dead ends: 241
[2022-01-31 17:26:30,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070
[2022-01-31 17:26:30,848 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 217 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:30,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 80 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states.
[2022-01-31 17:26:30,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240.
[2022-01-31 17:26:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 234 states have (on average 1.047008547008547) internal successors, (245), 234 states have internal predecessors, (245), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 250 transitions.
[2022-01-31 17:26:30,890 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 250 transitions. Word has length 233
[2022-01-31 17:26:30,890 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:30,890 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 250 transitions.
[2022-01-31 17:26:30,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.425287356321839) internal successors, (211), 86 states have internal predecessors, (211), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 250 transitions.
[2022-01-31 17:26:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236
[2022-01-31 17:26:30,891 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:30,891 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:30,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86
[2022-01-31 17:26:30,891 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash -732500793, now seen corresponding path program 84 times
[2022-01-31 17:26:30,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:30,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728424106]
[2022-01-31 17:26:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:30,892 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:30,893 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:30,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:30,900 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:32,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:32,998 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:32,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728424106]
[2022-01-31 17:26:32,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1728424106] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:32,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:32,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88
[2022-01-31 17:26:32,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96067161]
[2022-01-31 17:26:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:32,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states
[2022-01-31 17:26:32,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants.
[2022-01-31 17:26:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656
[2022-01-31 17:26:32,999 INFO L87 Difference]: Start difference. First operand 240 states and 250 transitions. Second operand has 88 states, 88 states have (on average 2.4204545454545454) internal successors, (213), 87 states have internal predecessors, (213), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:35,635 INFO L93 Difference]: Finished difference Result 308 states and 328 transitions.
[2022-01-31 17:26:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states.
[2022-01-31 17:26:35,636 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.4204545454545454) internal successors, (213), 87 states have internal predecessors, (213), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 235
[2022-01-31 17:26:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:35,637 INFO L225 Difference]: With dead ends: 308
[2022-01-31 17:26:35,637 INFO L226 Difference]: Without dead ends: 243
[2022-01-31 17:26:35,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756
[2022-01-31 17:26:35,638 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 219 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:35,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 75 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states.
[2022-01-31 17:26:35,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242.
[2022-01-31 17:26:35,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 236 states have (on average 1.0466101694915255) internal successors, (247), 236 states have internal predecessors, (247), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 252 transitions.
[2022-01-31 17:26:35,681 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 252 transitions. Word has length 235
[2022-01-31 17:26:35,681 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:35,681 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 252 transitions.
[2022-01-31 17:26:35,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.4204545454545454) internal successors, (213), 87 states have internal predecessors, (213), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 252 transitions.
[2022-01-31 17:26:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238
[2022-01-31 17:26:35,682 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:35,682 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:35,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87
[2022-01-31 17:26:35,682 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1859821595, now seen corresponding path program 85 times
[2022-01-31 17:26:35,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:35,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093002789]
[2022-01-31 17:26:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:35,684 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:35,684 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:35,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:35,691 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:37,851 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:37,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093002789]
[2022-01-31 17:26:37,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1093002789] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:37,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:37,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89
[2022-01-31 17:26:37,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637445748]
[2022-01-31 17:26:37,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:37,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states
[2022-01-31 17:26:37,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:37,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants.
[2022-01-31 17:26:37,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 17:26:37,853 INFO L87 Difference]: Start difference. First operand 242 states and 252 transitions. Second operand has 89 states, 89 states have (on average 2.4157303370786516) internal successors, (215), 88 states have internal predecessors, (215), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:40,529 INFO L93 Difference]: Finished difference Result 310 states and 330 transitions.
[2022-01-31 17:26:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states.
[2022-01-31 17:26:40,529 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.4157303370786516) internal successors, (215), 88 states have internal predecessors, (215), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237
[2022-01-31 17:26:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:40,530 INFO L225 Difference]: With dead ends: 310
[2022-01-31 17:26:40,530 INFO L226 Difference]: Without dead ends: 245
[2022-01-31 17:26:40,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450
[2022-01-31 17:26:40,532 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 221 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:40,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 80 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states.
[2022-01-31 17:26:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244.
[2022-01-31 17:26:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 238 states have (on average 1.046218487394958) internal successors, (249), 238 states have internal predecessors, (249), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 254 transitions.
[2022-01-31 17:26:40,584 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 254 transitions. Word has length 237
[2022-01-31 17:26:40,584 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:40,584 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 254 transitions.
[2022-01-31 17:26:40,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.4157303370786516) internal successors, (215), 88 states have internal predecessors, (215), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 254 transitions.
[2022-01-31 17:26:40,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240
[2022-01-31 17:26:40,585 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:40,585 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:40,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88
[2022-01-31 17:26:40,585 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:40,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1411613571, now seen corresponding path program 86 times
[2022-01-31 17:26:40,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:40,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514981935]
[2022-01-31 17:26:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:40,587 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:40,587 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:40,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:40,595 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:42,789 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:42,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514981935]
[2022-01-31 17:26:42,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [514981935] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:42,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:42,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90
[2022-01-31 17:26:42,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926578498]
[2022-01-31 17:26:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:42,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states
[2022-01-31 17:26:42,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants.
[2022-01-31 17:26:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010
[2022-01-31 17:26:42,791 INFO L87 Difference]: Start difference. First operand 244 states and 254 transitions. Second operand has 90 states, 90 states have (on average 2.411111111111111) internal successors, (217), 89 states have internal predecessors, (217), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:45,633 INFO L93 Difference]: Finished difference Result 312 states and 332 transitions.
[2022-01-31 17:26:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2022-01-31 17:26:45,634 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.411111111111111) internal successors, (217), 89 states have internal predecessors, (217), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239
[2022-01-31 17:26:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:45,634 INFO L225 Difference]: With dead ends: 312
[2022-01-31 17:26:45,635 INFO L226 Difference]: Without dead ends: 247
[2022-01-31 17:26:45,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152
[2022-01-31 17:26:45,636 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 223 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:45,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 110 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:26:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states.
[2022-01-31 17:26:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246.
[2022-01-31 17:26:45,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 240 states have (on average 1.0458333333333334) internal successors, (251), 240 states have internal predecessors, (251), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 256 transitions.
[2022-01-31 17:26:45,681 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 256 transitions. Word has length 239
[2022-01-31 17:26:45,681 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:45,681 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 256 transitions.
[2022-01-31 17:26:45,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.411111111111111) internal successors, (217), 89 states have internal predecessors, (217), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:45,681 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 256 transitions.
[2022-01-31 17:26:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242
[2022-01-31 17:26:45,682 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:45,682 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:45,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89
[2022-01-31 17:26:45,682 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1344747425, now seen corresponding path program 87 times
[2022-01-31 17:26:45,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:45,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662209202]
[2022-01-31 17:26:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:45,685 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:45,685 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:45,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:45,693 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:47,953 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:47,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662209202]
[2022-01-31 17:26:47,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [662209202] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:47,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:47,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91
[2022-01-31 17:26:47,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603525341]
[2022-01-31 17:26:47,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:47,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states
[2022-01-31 17:26:47,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:47,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants.
[2022-01-31 17:26:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190
[2022-01-31 17:26:47,956 INFO L87 Difference]: Start difference. First operand 246 states and 256 transitions. Second operand has 91 states, 91 states have (on average 2.4065934065934065) internal successors, (219), 90 states have internal predecessors, (219), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:50,797 INFO L93 Difference]: Finished difference Result 314 states and 334 transitions.
[2022-01-31 17:26:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states.
[2022-01-31 17:26:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.4065934065934065) internal successors, (219), 90 states have internal predecessors, (219), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241
[2022-01-31 17:26:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:50,798 INFO L225 Difference]: With dead ends: 314
[2022-01-31 17:26:50,798 INFO L226 Difference]: Without dead ends: 249
[2022-01-31 17:26:50,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862
[2022-01-31 17:26:50,801 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 225 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:50,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 90 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:50,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states.
[2022-01-31 17:26:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248.
[2022-01-31 17:26:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.0454545454545454) internal successors, (253), 242 states have internal predecessors, (253), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:50,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 258 transitions.
[2022-01-31 17:26:50,868 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 258 transitions. Word has length 241
[2022-01-31 17:26:50,868 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:50,869 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 258 transitions.
[2022-01-31 17:26:50,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.4065934065934065) internal successors, (219), 90 states have internal predecessors, (219), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:50,869 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 258 transitions.
[2022-01-31 17:26:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244
[2022-01-31 17:26:50,869 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:50,869 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:50,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90
[2022-01-31 17:26:50,870 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:50,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1510890559, now seen corresponding path program 88 times
[2022-01-31 17:26:50,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:50,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793370961]
[2022-01-31 17:26:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:50,871 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:50,871 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:50,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:50,879 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:53,253 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:53,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793370961]
[2022-01-31 17:26:53,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1793370961] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:53,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:53,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92
[2022-01-31 17:26:53,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540807453]
[2022-01-31 17:26:53,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:53,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states
[2022-01-31 17:26:53,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:53,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants.
[2022-01-31 17:26:53,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372
[2022-01-31 17:26:53,256 INFO L87 Difference]: Start difference. First operand 248 states and 258 transitions. Second operand has 92 states, 92 states have (on average 2.402173913043478) internal successors, (221), 91 states have internal predecessors, (221), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:56,232 INFO L93 Difference]: Finished difference Result 316 states and 336 transitions.
[2022-01-31 17:26:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states.
[2022-01-31 17:26:56,232 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.402173913043478) internal successors, (221), 91 states have internal predecessors, (221), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 243
[2022-01-31 17:26:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:56,233 INFO L225 Difference]: With dead ends: 316
[2022-01-31 17:26:56,233 INFO L226 Difference]: Without dead ends: 251
[2022-01-31 17:26:56,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580
[2022-01-31 17:26:56,235 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 227 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:56,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 90 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:56,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states.
[2022-01-31 17:26:56,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250.
[2022-01-31 17:26:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 244 states have (on average 1.0450819672131149) internal successors, (255), 244 states have internal predecessors, (255), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 260 transitions.
[2022-01-31 17:26:56,281 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 260 transitions. Word has length 243
[2022-01-31 17:26:56,281 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:56,281 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 260 transitions.
[2022-01-31 17:26:56,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.402173913043478) internal successors, (221), 91 states have internal predecessors, (221), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 260 transitions.
[2022-01-31 17:26:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246
[2022-01-31 17:26:56,282 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:56,282 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:56,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91
[2022-01-31 17:26:56,282 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:56,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2034314915, now seen corresponding path program 89 times
[2022-01-31 17:26:56,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:56,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589992996]
[2022-01-31 17:26:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:56,284 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:56,284 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:56,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:56,292 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:58,684 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:58,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589992996]
[2022-01-31 17:26:58,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1589992996] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:58,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:58,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93
[2022-01-31 17:26:58,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992729865]
[2022-01-31 17:26:58,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:58,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states
[2022-01-31 17:26:58,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants.
[2022-01-31 17:26:58,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 17:26:58,687 INFO L87 Difference]: Start difference. First operand 250 states and 260 transitions. Second operand has 93 states, 93 states have (on average 2.3978494623655915) internal successors, (223), 92 states have internal predecessors, (223), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:01,623 INFO L93 Difference]: Finished difference Result 318 states and 338 transitions.
[2022-01-31 17:27:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states.
[2022-01-31 17:27:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.3978494623655915) internal successors, (223), 92 states have internal predecessors, (223), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245
[2022-01-31 17:27:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:01,624 INFO L225 Difference]: With dead ends: 318
[2022-01-31 17:27:01,624 INFO L226 Difference]: Without dead ends: 253
[2022-01-31 17:27:01,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306
[2022-01-31 17:27:01,625 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 229 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:01,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 80 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:01,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states.
[2022-01-31 17:27:01,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252.
[2022-01-31 17:27:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 246 states have (on average 1.0447154471544715) internal successors, (257), 246 states have internal predecessors, (257), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 262 transitions.
[2022-01-31 17:27:01,684 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 262 transitions. Word has length 245
[2022-01-31 17:27:01,684 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:01,684 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 262 transitions.
[2022-01-31 17:27:01,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.3978494623655915) internal successors, (223), 92 states have internal predecessors, (223), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 262 transitions.
[2022-01-31 17:27:01,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248
[2022-01-31 17:27:01,685 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:01,685 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:01,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92
[2022-01-31 17:27:01,685 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:01,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:01,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1227257595, now seen corresponding path program 90 times
[2022-01-31 17:27:01,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:01,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362206168]
[2022-01-31 17:27:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:01,687 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:01,687 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:01,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:01,695 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:04,102 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:04,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362206168]
[2022-01-31 17:27:04,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1362206168] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:04,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:04,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94
[2022-01-31 17:27:04,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423031102]
[2022-01-31 17:27:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:04,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states
[2022-01-31 17:27:04,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants.
[2022-01-31 17:27:04,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742
[2022-01-31 17:27:04,104 INFO L87 Difference]: Start difference. First operand 252 states and 262 transitions. Second operand has 94 states, 94 states have (on average 2.393617021276596) internal successors, (225), 93 states have internal predecessors, (225), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:07,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:07,151 INFO L93 Difference]: Finished difference Result 320 states and 340 transitions.
[2022-01-31 17:27:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states.
[2022-01-31 17:27:07,151 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.393617021276596) internal successors, (225), 93 states have internal predecessors, (225), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 247
[2022-01-31 17:27:07,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:07,152 INFO L225 Difference]: With dead ends: 320
[2022-01-31 17:27:07,152 INFO L226 Difference]: Without dead ends: 255
[2022-01-31 17:27:07,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040
[2022-01-31 17:27:07,154 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 231 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:07,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 85 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:27:07,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states.
[2022-01-31 17:27:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254.
[2022-01-31 17:27:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.0443548387096775) internal successors, (259), 248 states have internal predecessors, (259), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 264 transitions.
[2022-01-31 17:27:07,213 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 264 transitions. Word has length 247
[2022-01-31 17:27:07,213 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:07,213 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 264 transitions.
[2022-01-31 17:27:07,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.393617021276596) internal successors, (225), 93 states have internal predecessors, (225), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 264 transitions.
[2022-01-31 17:27:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250
[2022-01-31 17:27:07,214 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:07,214 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:07,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93
[2022-01-31 17:27:07,214 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:07,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:07,214 INFO L85 PathProgramCache]: Analyzing trace with hash 272313625, now seen corresponding path program 91 times
[2022-01-31 17:27:07,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:07,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808361099]
[2022-01-31 17:27:07,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:07,216 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:07,216 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:07,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:07,224 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:09,678 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:09,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808361099]
[2022-01-31 17:27:09,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [808361099] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:09,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:09,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95
[2022-01-31 17:27:09,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294224029]
[2022-01-31 17:27:09,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:09,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states
[2022-01-31 17:27:09,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:09,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants.
[2022-01-31 17:27:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 17:27:09,680 INFO L87 Difference]: Start difference. First operand 254 states and 264 transitions. Second operand has 95 states, 95 states have (on average 2.389473684210526) internal successors, (227), 94 states have internal predecessors, (227), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:12,746 INFO L93 Difference]: Finished difference Result 322 states and 342 transitions.
[2022-01-31 17:27:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states.
[2022-01-31 17:27:12,747 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.389473684210526) internal successors, (227), 94 states have internal predecessors, (227), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 249
[2022-01-31 17:27:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:12,747 INFO L225 Difference]: With dead ends: 322
[2022-01-31 17:27:12,748 INFO L226 Difference]: Without dead ends: 257
[2022-01-31 17:27:12,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782
[2022-01-31 17:27:12,750 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 233 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:12,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 85 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states.
[2022-01-31 17:27:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256.
[2022-01-31 17:27:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 250 states have (on average 1.044) internal successors, (261), 250 states have internal predecessors, (261), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 266 transitions.
[2022-01-31 17:27:12,808 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 266 transitions. Word has length 249
[2022-01-31 17:27:12,808 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:12,808 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 266 transitions.
[2022-01-31 17:27:12,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.389473684210526) internal successors, (227), 94 states have internal predecessors, (227), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 266 transitions.
[2022-01-31 17:27:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252
[2022-01-31 17:27:12,808 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:12,809 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:12,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94
[2022-01-31 17:27:12,809 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:12,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:12,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1694159799, now seen corresponding path program 92 times
[2022-01-31 17:27:12,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:12,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463725158]
[2022-01-31 17:27:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:12,810 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:12,810 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:12,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:12,819 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:15,326 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:15,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463725158]
[2022-01-31 17:27:15,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [463725158] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:15,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:15,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96
[2022-01-31 17:27:15,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427906652]
[2022-01-31 17:27:15,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:15,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states
[2022-01-31 17:27:15,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants.
[2022-01-31 17:27:15,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120
[2022-01-31 17:27:15,328 INFO L87 Difference]: Start difference. First operand 256 states and 266 transitions. Second operand has 96 states, 96 states have (on average 2.3854166666666665) internal successors, (229), 95 states have internal predecessors, (229), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:18,440 INFO L93 Difference]: Finished difference Result 324 states and 344 transitions.
[2022-01-31 17:27:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states.
[2022-01-31 17:27:18,441 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.3854166666666665) internal successors, (229), 95 states have internal predecessors, (229), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 251
[2022-01-31 17:27:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:18,442 INFO L225 Difference]: With dead ends: 324
[2022-01-31 17:27:18,442 INFO L226 Difference]: Without dead ends: 259
[2022-01-31 17:27:18,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532
[2022-01-31 17:27:18,444 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 235 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:18,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 70 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:18,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states.
[2022-01-31 17:27:18,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258.
[2022-01-31 17:27:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 252 states have (on average 1.0436507936507937) internal successors, (263), 252 states have internal predecessors, (263), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 268 transitions.
[2022-01-31 17:27:18,495 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 268 transitions. Word has length 251
[2022-01-31 17:27:18,495 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:18,495 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 268 transitions.
[2022-01-31 17:27:18,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.3854166666666665) internal successors, (229), 95 states have internal predecessors, (229), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:18,495 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 268 transitions.
[2022-01-31 17:27:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254
[2022-01-31 17:27:18,496 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:18,496 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:18,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95
[2022-01-31 17:27:18,496 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2006234411, now seen corresponding path program 93 times
[2022-01-31 17:27:18,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:18,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848149142]
[2022-01-31 17:27:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:18,498 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:18,498 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:18,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:18,506 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:21,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:21,068 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:21,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848149142]
[2022-01-31 17:27:21,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [848149142] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:21,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:21,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97
[2022-01-31 17:27:21,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439537733]
[2022-01-31 17:27:21,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:21,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states
[2022-01-31 17:27:21,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants.
[2022-01-31 17:27:21,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 17:27:21,071 INFO L87 Difference]: Start difference. First operand 258 states and 268 transitions. Second operand has 97 states, 97 states have (on average 2.381443298969072) internal successors, (231), 96 states have internal predecessors, (231), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:24,311 INFO L93 Difference]: Finished difference Result 326 states and 346 transitions.
[2022-01-31 17:27:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states.
[2022-01-31 17:27:24,311 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.381443298969072) internal successors, (231), 96 states have internal predecessors, (231), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 253
[2022-01-31 17:27:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:24,312 INFO L225 Difference]: With dead ends: 326
[2022-01-31 17:27:24,312 INFO L226 Difference]: Without dead ends: 261
[2022-01-31 17:27:24,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290
[2022-01-31 17:27:24,314 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 237 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:24,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 85 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states.
[2022-01-31 17:27:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260.
[2022-01-31 17:27:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 254 states have (on average 1.0433070866141732) internal successors, (265), 254 states have internal predecessors, (265), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 270 transitions.
[2022-01-31 17:27:24,366 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 270 transitions. Word has length 253
[2022-01-31 17:27:24,366 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:24,366 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 270 transitions.
[2022-01-31 17:27:24,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.381443298969072) internal successors, (231), 96 states have internal predecessors, (231), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 270 transitions.
[2022-01-31 17:27:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256
[2022-01-31 17:27:24,366 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:24,367 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:24,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96
[2022-01-31 17:27:24,367 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1852149133, now seen corresponding path program 94 times
[2022-01-31 17:27:24,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:24,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223357712]
[2022-01-31 17:27:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:24,368 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:24,368 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:24,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:24,378 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:26,965 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:26,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223357712]
[2022-01-31 17:27:26,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1223357712] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:26,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:26,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98
[2022-01-31 17:27:26,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287712109]
[2022-01-31 17:27:26,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:26,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states
[2022-01-31 17:27:26,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2022-01-31 17:27:26,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506
[2022-01-31 17:27:26,967 INFO L87 Difference]: Start difference. First operand 260 states and 270 transitions. Second operand has 98 states, 98 states have (on average 2.377551020408163) internal successors, (233), 97 states have internal predecessors, (233), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:30,198 INFO L93 Difference]: Finished difference Result 328 states and 348 transitions.
[2022-01-31 17:27:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states.
[2022-01-31 17:27:30,199 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.377551020408163) internal successors, (233), 97 states have internal predecessors, (233), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 255
[2022-01-31 17:27:30,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:30,199 INFO L225 Difference]: With dead ends: 328
[2022-01-31 17:27:30,200 INFO L226 Difference]: Without dead ends: 263
[2022-01-31 17:27:30,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056
[2022-01-31 17:27:30,201 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 239 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:30,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 70 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:30,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states.
[2022-01-31 17:27:30,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262.
[2022-01-31 17:27:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 256 states have (on average 1.04296875) internal successors, (267), 256 states have internal predecessors, (267), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 272 transitions.
[2022-01-31 17:27:30,253 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 272 transitions. Word has length 255
[2022-01-31 17:27:30,254 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:30,254 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 272 transitions.
[2022-01-31 17:27:30,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.377551020408163) internal successors, (233), 97 states have internal predecessors, (233), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 272 transitions.
[2022-01-31 17:27:30,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258
[2022-01-31 17:27:30,254 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:30,254 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:30,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97
[2022-01-31 17:27:30,255 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:30,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash 194914961, now seen corresponding path program 95 times
[2022-01-31 17:27:30,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:30,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560916594]
[2022-01-31 17:27:30,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:30,256 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:30,256 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:30,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:30,266 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:33,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:33,144 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:33,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560916594]
[2022-01-31 17:27:33,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1560916594] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:33,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:33,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99
[2022-01-31 17:27:33,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769052687]
[2022-01-31 17:27:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:33,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states
[2022-01-31 17:27:33,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants.
[2022-01-31 17:27:33,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 17:27:33,147 INFO L87 Difference]: Start difference. First operand 262 states and 272 transitions. Second operand has 99 states, 99 states have (on average 2.3737373737373737) internal successors, (235), 98 states have internal predecessors, (235), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:36,492 INFO L93 Difference]: Finished difference Result 330 states and 350 transitions.
[2022-01-31 17:27:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states.
[2022-01-31 17:27:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.3737373737373737) internal successors, (235), 98 states have internal predecessors, (235), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 257
[2022-01-31 17:27:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:36,493 INFO L225 Difference]: With dead ends: 330
[2022-01-31 17:27:36,493 INFO L226 Difference]: Without dead ends: 265
[2022-01-31 17:27:36,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830
[2022-01-31 17:27:36,495 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 241 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:36,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 90 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:27:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states.
[2022-01-31 17:27:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264.
[2022-01-31 17:27:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 258 states have (on average 1.0426356589147288) internal successors, (269), 258 states have internal predecessors, (269), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 274 transitions.
[2022-01-31 17:27:36,550 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 274 transitions. Word has length 257
[2022-01-31 17:27:36,550 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:36,550 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 274 transitions.
[2022-01-31 17:27:36,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.3737373737373737) internal successors, (235), 98 states have internal predecessors, (235), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 274 transitions.
[2022-01-31 17:27:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260
[2022-01-31 17:27:36,551 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:36,551 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:36,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98
[2022-01-31 17:27:36,551 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash 328487727, now seen corresponding path program 96 times
[2022-01-31 17:27:36,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:36,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878943621]
[2022-01-31 17:27:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:36,553 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:36,553 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:36,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:36,562 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:39,317 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:39,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878943621]
[2022-01-31 17:27:39,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1878943621] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:39,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:39,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100
[2022-01-31 17:27:39,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455754413]
[2022-01-31 17:27:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:39,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states
[2022-01-31 17:27:39,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:39,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants.
[2022-01-31 17:27:39,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900
[2022-01-31 17:27:39,320 INFO L87 Difference]: Start difference. First operand 264 states and 274 transitions. Second operand has 100 states, 100 states have (on average 2.37) internal successors, (237), 99 states have internal predecessors, (237), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:42,789 INFO L93 Difference]: Finished difference Result 332 states and 352 transitions.
[2022-01-31 17:27:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states.
[2022-01-31 17:27:42,790 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.37) internal successors, (237), 99 states have internal predecessors, (237), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 259
[2022-01-31 17:27:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:42,790 INFO L225 Difference]: With dead ends: 332
[2022-01-31 17:27:42,790 INFO L226 Difference]: Without dead ends: 267
[2022-01-31 17:27:42,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612
[2022-01-31 17:27:42,793 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 243 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:42,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 90 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:27:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states.
[2022-01-31 17:27:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266.
[2022-01-31 17:27:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 260 states have (on average 1.0423076923076924) internal successors, (271), 260 states have internal predecessors, (271), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 276 transitions.
[2022-01-31 17:27:42,849 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 276 transitions. Word has length 259
[2022-01-31 17:27:42,849 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:42,849 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 276 transitions.
[2022-01-31 17:27:42,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.37) internal successors, (237), 99 states have internal predecessors, (237), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 276 transitions.
[2022-01-31 17:27:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262
[2022-01-31 17:27:42,850 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:42,850 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:42,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99
[2022-01-31 17:27:42,850 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:42,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:42,850 INFO L85 PathProgramCache]: Analyzing trace with hash -157103027, now seen corresponding path program 97 times
[2022-01-31 17:27:42,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:42,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008430404]
[2022-01-31 17:27:42,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:42,851 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:42,852 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:42,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:42,862 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:45,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:45,631 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:45,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008430404]
[2022-01-31 17:27:45,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2008430404] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:45,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:45,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101
[2022-01-31 17:27:45,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535761758]
[2022-01-31 17:27:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:45,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states
[2022-01-31 17:27:45,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:45,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants.
[2022-01-31 17:27:45,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 17:27:45,643 INFO L87 Difference]: Start difference. First operand 266 states and 276 transitions. Second operand has 101 states, 101 states have (on average 2.366336633663366) internal successors, (239), 100 states have internal predecessors, (239), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:49,077 INFO L93 Difference]: Finished difference Result 334 states and 354 transitions.
[2022-01-31 17:27:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states.
[2022-01-31 17:27:49,077 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.366336633663366) internal successors, (239), 100 states have internal predecessors, (239), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261
[2022-01-31 17:27:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:49,078 INFO L225 Difference]: With dead ends: 334
[2022-01-31 17:27:49,078 INFO L226 Difference]: Without dead ends: 269
[2022-01-31 17:27:49,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402
[2022-01-31 17:27:49,080 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 245 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:49,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 80 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states.
[2022-01-31 17:27:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268.
[2022-01-31 17:27:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 262 states have (on average 1.0419847328244274) internal successors, (273), 262 states have internal predecessors, (273), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 278 transitions.
[2022-01-31 17:27:49,136 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 278 transitions. Word has length 261
[2022-01-31 17:27:49,136 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:49,136 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 278 transitions.
[2022-01-31 17:27:49,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.366336633663366) internal successors, (239), 100 states have internal predecessors, (239), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:49,136 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 278 transitions.
[2022-01-31 17:27:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264
[2022-01-31 17:27:49,137 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:49,137 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:49,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100
[2022-01-31 17:27:49,137 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:49,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1341617643, now seen corresponding path program 98 times
[2022-01-31 17:27:49,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:49,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746757424]
[2022-01-31 17:27:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:49,144 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:49,144 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:49,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:49,154 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:51,967 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:51,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746757424]
[2022-01-31 17:27:51,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1746757424] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:51,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:51,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102
[2022-01-31 17:27:51,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157778102]
[2022-01-31 17:27:51,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:51,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states
[2022-01-31 17:27:51,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:51,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants.
[2022-01-31 17:27:51,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302
[2022-01-31 17:27:51,969 INFO L87 Difference]: Start difference. First operand 268 states and 278 transitions. Second operand has 102 states, 102 states have (on average 2.3627450980392157) internal successors, (241), 101 states have internal predecessors, (241), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:55,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:55,496 INFO L93 Difference]: Finished difference Result 336 states and 356 transitions.
[2022-01-31 17:27:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states.
[2022-01-31 17:27:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.3627450980392157) internal successors, (241), 101 states have internal predecessors, (241), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 263
[2022-01-31 17:27:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:55,497 INFO L225 Difference]: With dead ends: 336
[2022-01-31 17:27:55,497 INFO L226 Difference]: Without dead ends: 271
[2022-01-31 17:27:55,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200
[2022-01-31 17:27:55,499 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 247 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:55,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 75 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states.
[2022-01-31 17:27:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270.
[2022-01-31 17:27:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 264 states have (on average 1.0416666666666667) internal successors, (275), 264 states have internal predecessors, (275), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 280 transitions.
[2022-01-31 17:27:55,566 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 280 transitions. Word has length 263
[2022-01-31 17:27:55,566 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:55,566 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 280 transitions.
[2022-01-31 17:27:55,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.3627450980392157) internal successors, (241), 101 states have internal predecessors, (241), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 280 transitions.
[2022-01-31 17:27:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266
[2022-01-31 17:27:55,567 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:55,567 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:55,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101
[2022-01-31 17:27:55,567 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:55,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1496829943, now seen corresponding path program 99 times
[2022-01-31 17:27:55,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:55,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70378482]
[2022-01-31 17:27:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:55,569 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:55,569 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:55,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:55,578 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:58,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:58,503 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:58,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70378482]
[2022-01-31 17:27:58,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [70378482] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:58,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:58,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103
[2022-01-31 17:27:58,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183765640]
[2022-01-31 17:27:58,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:58,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states
[2022-01-31 17:27:58,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants.
[2022-01-31 17:27:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506
[2022-01-31 17:27:58,506 INFO L87 Difference]: Start difference. First operand 270 states and 280 transitions. Second operand has 103 states, 103 states have (on average 2.3592233009708736) internal successors, (243), 102 states have internal predecessors, (243), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:02,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:02,084 INFO L93 Difference]: Finished difference Result 338 states and 358 transitions.
[2022-01-31 17:28:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states.
[2022-01-31 17:28:02,084 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.3592233009708736) internal successors, (243), 102 states have internal predecessors, (243), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 265
[2022-01-31 17:28:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:02,085 INFO L225 Difference]: With dead ends: 338
[2022-01-31 17:28:02,085 INFO L226 Difference]: Without dead ends: 273
[2022-01-31 17:28:02,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006
[2022-01-31 17:28:02,086 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 249 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:02,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 70 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:28:02,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states.
[2022-01-31 17:28:02,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 272.
[2022-01-31 17:28:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 266 states have (on average 1.0413533834586466) internal successors, (277), 266 states have internal predecessors, (277), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 282 transitions.
[2022-01-31 17:28:02,145 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 282 transitions. Word has length 265
[2022-01-31 17:28:02,145 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:02,145 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 282 transitions.
[2022-01-31 17:28:02,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.3592233009708736) internal successors, (243), 102 states have internal predecessors, (243), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 282 transitions.
[2022-01-31 17:28:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268
[2022-01-31 17:28:02,146 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:02,146 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:02,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102
[2022-01-31 17:28:02,146 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:02,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1940727129, now seen corresponding path program 100 times
[2022-01-31 17:28:02,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:02,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211684401]
[2022-01-31 17:28:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:02,147 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:02,147 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:02,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:02,158 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:05,110 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:05,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211684401]
[2022-01-31 17:28:05,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1211684401] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:05,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:05,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104
[2022-01-31 17:28:05,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613443426]
[2022-01-31 17:28:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:05,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states
[2022-01-31 17:28:05,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants.
[2022-01-31 17:28:05,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712
[2022-01-31 17:28:05,113 INFO L87 Difference]: Start difference. First operand 272 states and 282 transitions. Second operand has 104 states, 104 states have (on average 2.355769230769231) internal successors, (245), 103 states have internal predecessors, (245), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:08,773 INFO L93 Difference]: Finished difference Result 340 states and 360 transitions.
[2022-01-31 17:28:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2022-01-31 17:28:08,774 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.355769230769231) internal successors, (245), 103 states have internal predecessors, (245), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 267
[2022-01-31 17:28:08,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:08,774 INFO L225 Difference]: With dead ends: 340
[2022-01-31 17:28:08,775 INFO L226 Difference]: Without dead ends: 275
[2022-01-31 17:28:08,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820
[2022-01-31 17:28:08,776 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:08,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 85 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:08,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states.
[2022-01-31 17:28:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 274.
[2022-01-31 17:28:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 268 states have (on average 1.041044776119403) internal successors, (279), 268 states have internal predecessors, (279), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 284 transitions.
[2022-01-31 17:28:08,845 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 284 transitions. Word has length 267
[2022-01-31 17:28:08,845 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:08,845 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 284 transitions.
[2022-01-31 17:28:08,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.355769230769231) internal successors, (245), 103 states have internal predecessors, (245), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 284 transitions.
[2022-01-31 17:28:08,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270
[2022-01-31 17:28:08,848 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:08,848 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:08,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103
[2022-01-31 17:28:08,848 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:08,848 INFO L85 PathProgramCache]: Analyzing trace with hash 970806725, now seen corresponding path program 101 times
[2022-01-31 17:28:08,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:08,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222924392]
[2022-01-31 17:28:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:08,852 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:08,852 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:08,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:08,863 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:11,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:11,852 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:11,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222924392]
[2022-01-31 17:28:11,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [222924392] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:11,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:11,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105
[2022-01-31 17:28:11,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449103467]
[2022-01-31 17:28:11,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:11,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states
[2022-01-31 17:28:11,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:11,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants.
[2022-01-31 17:28:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 17:28:11,855 INFO L87 Difference]: Start difference. First operand 274 states and 284 transitions. Second operand has 105 states, 105 states have (on average 2.3523809523809525) internal successors, (247), 104 states have internal predecessors, (247), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:15,517 INFO L93 Difference]: Finished difference Result 342 states and 362 transitions.
[2022-01-31 17:28:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states.
[2022-01-31 17:28:15,517 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.3523809523809525) internal successors, (247), 104 states have internal predecessors, (247), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 269
[2022-01-31 17:28:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:15,518 INFO L225 Difference]: With dead ends: 342
[2022-01-31 17:28:15,518 INFO L226 Difference]: Without dead ends: 277
[2022-01-31 17:28:15,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642
[2022-01-31 17:28:15,520 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 253 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:15,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 65 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:28:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states.
[2022-01-31 17:28:15,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 276.
[2022-01-31 17:28:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 270 states have (on average 1.0407407407407407) internal successors, (281), 270 states have internal predecessors, (281), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 286 transitions.
[2022-01-31 17:28:15,607 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 286 transitions. Word has length 269
[2022-01-31 17:28:15,607 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:15,608 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 286 transitions.
[2022-01-31 17:28:15,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.3523809523809525) internal successors, (247), 104 states have internal predecessors, (247), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 286 transitions.
[2022-01-31 17:28:15,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2022-01-31 17:28:15,608 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:15,608 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:15,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104
[2022-01-31 17:28:15,609 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1363836573, now seen corresponding path program 102 times
[2022-01-31 17:28:15,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:15,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172897061]
[2022-01-31 17:28:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:15,610 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:15,610 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:15,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:15,620 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:18,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:18,629 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:18,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172897061]
[2022-01-31 17:28:18,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1172897061] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:18,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:18,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106
[2022-01-31 17:28:18,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209159488]
[2022-01-31 17:28:18,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:18,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states
[2022-01-31 17:28:18,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants.
[2022-01-31 17:28:18,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130
[2022-01-31 17:28:18,631 INFO L87 Difference]: Start difference. First operand 276 states and 286 transitions. Second operand has 106 states, 106 states have (on average 2.349056603773585) internal successors, (249), 105 states have internal predecessors, (249), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:22,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:22,419 INFO L93 Difference]: Finished difference Result 344 states and 364 transitions.
[2022-01-31 17:28:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states.
[2022-01-31 17:28:22,420 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.349056603773585) internal successors, (249), 105 states have internal predecessors, (249), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 271
[2022-01-31 17:28:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:22,420 INFO L225 Difference]: With dead ends: 344
[2022-01-31 17:28:22,420 INFO L226 Difference]: Without dead ends: 279
[2022-01-31 17:28:22,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472
[2022-01-31 17:28:22,422 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 255 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:22,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 80 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:22,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states.
[2022-01-31 17:28:22,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278.
[2022-01-31 17:28:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.0404411764705883) internal successors, (283), 272 states have internal predecessors, (283), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 288 transitions.
[2022-01-31 17:28:22,483 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 288 transitions. Word has length 271
[2022-01-31 17:28:22,483 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:22,483 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 288 transitions.
[2022-01-31 17:28:22,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.349056603773585) internal successors, (249), 105 states have internal predecessors, (249), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 288 transitions.
[2022-01-31 17:28:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274
[2022-01-31 17:28:22,484 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:22,484 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:22,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105
[2022-01-31 17:28:22,484 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:22,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:22,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1311849857, now seen corresponding path program 103 times
[2022-01-31 17:28:22,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:22,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133964361]
[2022-01-31 17:28:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:22,486 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:22,486 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:22,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:22,496 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:25,645 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:25,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133964361]
[2022-01-31 17:28:25,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2133964361] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:25,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:25,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107
[2022-01-31 17:28:25,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471079947]
[2022-01-31 17:28:25,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:25,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states
[2022-01-31 17:28:25,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:25,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants.
[2022-01-31 17:28:25,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342
[2022-01-31 17:28:25,648 INFO L87 Difference]: Start difference. First operand 278 states and 288 transitions. Second operand has 107 states, 107 states have (on average 2.3457943925233646) internal successors, (251), 106 states have internal predecessors, (251), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:29,411 INFO L93 Difference]: Finished difference Result 346 states and 366 transitions.
[2022-01-31 17:28:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states.
[2022-01-31 17:28:29,411 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.3457943925233646) internal successors, (251), 106 states have internal predecessors, (251), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 273
[2022-01-31 17:28:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:29,411 INFO L225 Difference]: With dead ends: 346
[2022-01-31 17:28:29,411 INFO L226 Difference]: Without dead ends: 281
[2022-01-31 17:28:29,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310
[2022-01-31 17:28:29,413 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 257 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:29,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 70 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:28:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states.
[2022-01-31 17:28:29,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280.
[2022-01-31 17:28:29,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 274 states have (on average 1.0401459854014599) internal successors, (285), 274 states have internal predecessors, (285), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 290 transitions.
[2022-01-31 17:28:29,475 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 290 transitions. Word has length 273
[2022-01-31 17:28:29,476 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:29,476 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 290 transitions.
[2022-01-31 17:28:29,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.3457943925233646) internal successors, (251), 106 states have internal predecessors, (251), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 290 transitions.
[2022-01-31 17:28:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276
[2022-01-31 17:28:29,476 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:29,476 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:29,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106
[2022-01-31 17:28:29,477 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash -38901217, now seen corresponding path program 104 times
[2022-01-31 17:28:29,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:29,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279053359]
[2022-01-31 17:28:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:29,478 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:29,478 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:29,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:29,488 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:32,660 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 17:28:32,660 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:32,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279053359]
[2022-01-31 17:28:32,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1279053359] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:32,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:32,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108
[2022-01-31 17:28:32,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129741045]
[2022-01-31 17:28:32,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:32,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states
[2022-01-31 17:28:32,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:32,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants.
[2022-01-31 17:28:32,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556
[2022-01-31 17:28:32,663 INFO L87 Difference]: Start difference. First operand 280 states and 290 transitions. Second operand has 108 states, 108 states have (on average 2.3425925925925926) internal successors, (253), 107 states have internal predecessors, (253), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:36,607 INFO L93 Difference]: Finished difference Result 348 states and 368 transitions.
[2022-01-31 17:28:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states.
[2022-01-31 17:28:36,608 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.3425925925925926) internal successors, (253), 107 states have internal predecessors, (253), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 275
[2022-01-31 17:28:36,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:36,608 INFO L225 Difference]: With dead ends: 348
[2022-01-31 17:28:36,608 INFO L226 Difference]: Without dead ends: 283
[2022-01-31 17:28:36,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156
[2022-01-31 17:28:36,610 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 259 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:36,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 100 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states.
[2022-01-31 17:28:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282.
[2022-01-31 17:28:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 276 states have (on average 1.039855072463768) internal successors, (287), 276 states have internal predecessors, (287), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 292 transitions.
[2022-01-31 17:28:36,674 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 292 transitions. Word has length 275
[2022-01-31 17:28:36,674 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:36,675 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 292 transitions.
[2022-01-31 17:28:36,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.3425925925925926) internal successors, (253), 107 states have internal predecessors, (253), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 292 transitions.
[2022-01-31 17:28:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278
[2022-01-31 17:28:36,675 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:36,675 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:36,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107
[2022-01-31 17:28:36,675 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1030559939, now seen corresponding path program 105 times
[2022-01-31 17:28:36,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:36,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896127321]
[2022-01-31 17:28:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:36,677 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:36,677 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:36,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:36,687 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:39,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:39,873 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:39,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896127321]
[2022-01-31 17:28:39,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1896127321] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:39,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:39,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109
[2022-01-31 17:28:39,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266058853]
[2022-01-31 17:28:39,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:39,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states
[2022-01-31 17:28:39,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants.
[2022-01-31 17:28:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772
[2022-01-31 17:28:39,875 INFO L87 Difference]: Start difference. First operand 282 states and 292 transitions. Second operand has 109 states, 109 states have (on average 2.3394495412844036) internal successors, (255), 108 states have internal predecessors, (255), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:43,939 INFO L93 Difference]: Finished difference Result 350 states and 370 transitions.
[2022-01-31 17:28:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states.
[2022-01-31 17:28:43,939 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.3394495412844036) internal successors, (255), 108 states have internal predecessors, (255), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 277
[2022-01-31 17:28:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:43,940 INFO L225 Difference]: With dead ends: 350
[2022-01-31 17:28:43,940 INFO L226 Difference]: Without dead ends: 285
[2022-01-31 17:28:43,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010
[2022-01-31 17:28:43,942 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 261 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:43,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 90 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:43,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states.
[2022-01-31 17:28:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284.
[2022-01-31 17:28:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 278 states have (on average 1.039568345323741) internal successors, (289), 278 states have internal predecessors, (289), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 294 transitions.
[2022-01-31 17:28:44,022 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 294 transitions. Word has length 277
[2022-01-31 17:28:44,022 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:44,022 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 294 transitions.
[2022-01-31 17:28:44,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.3394495412844036) internal successors, (255), 108 states have internal predecessors, (255), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 294 transitions.
[2022-01-31 17:28:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280
[2022-01-31 17:28:44,023 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:44,023 INFO L514 BasicCegarLoop]: trace histogram [106, 106, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:44,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108
[2022-01-31 17:28:44,023 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:44,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:44,023 INFO L85 PathProgramCache]: Analyzing trace with hash -531852069, now seen corresponding path program 106 times
[2022-01-31 17:28:44,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:44,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445660510]
[2022-01-31 17:28:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:44,024 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:44,024 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:44,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:44,035 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:47,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:47,328 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:47,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445660510]
[2022-01-31 17:28:47,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [445660510] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:47,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:47,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110
[2022-01-31 17:28:47,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559975811]
[2022-01-31 17:28:47,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:47,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states
[2022-01-31 17:28:47,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:47,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants.
[2022-01-31 17:28:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990
[2022-01-31 17:28:47,331 INFO L87 Difference]: Start difference. First operand 284 states and 294 transitions. Second operand has 110 states, 110 states have (on average 2.3363636363636364) internal successors, (257), 109 states have internal predecessors, (257), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:51,358 INFO L93 Difference]: Finished difference Result 352 states and 372 transitions.
[2022-01-31 17:28:51,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states.
[2022-01-31 17:28:51,358 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.3363636363636364) internal successors, (257), 109 states have internal predecessors, (257), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 279
[2022-01-31 17:28:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:51,359 INFO L225 Difference]: With dead ends: 352
[2022-01-31 17:28:51,359 INFO L226 Difference]: Without dead ends: 287
[2022-01-31 17:28:51,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872
[2022-01-31 17:28:51,361 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 263 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:51,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 75 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:28:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states.
[2022-01-31 17:28:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286.
[2022-01-31 17:28:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 280 states have (on average 1.0392857142857144) internal successors, (291), 280 states have internal predecessors, (291), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 296 transitions.
[2022-01-31 17:28:51,427 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 296 transitions. Word has length 279
[2022-01-31 17:28:51,427 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:51,428 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 296 transitions.
[2022-01-31 17:28:51,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.3363636363636364) internal successors, (257), 109 states have internal predecessors, (257), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 296 transitions.
[2022-01-31 17:28:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282
[2022-01-31 17:28:51,428 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:51,428 INFO L514 BasicCegarLoop]: trace histogram [107, 107, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:51,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109
[2022-01-31 17:28:51,429 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:51,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:51,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1985041145, now seen corresponding path program 107 times
[2022-01-31 17:28:51,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:51,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19848349]
[2022-01-31 17:28:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:51,430 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:51,430 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:51,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:51,441 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:54,770 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:54,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19848349]
[2022-01-31 17:28:54,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [19848349] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:54,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:54,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111
[2022-01-31 17:28:54,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093524592]
[2022-01-31 17:28:54,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:54,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states
[2022-01-31 17:28:54,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants.
[2022-01-31 17:28:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210
[2022-01-31 17:28:54,772 INFO L87 Difference]: Start difference. First operand 286 states and 296 transitions. Second operand has 111 states, 111 states have (on average 2.3333333333333335) internal successors, (259), 110 states have internal predecessors, (259), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:59,008 INFO L93 Difference]: Finished difference Result 354 states and 374 transitions.
[2022-01-31 17:28:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states.
[2022-01-31 17:28:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.3333333333333335) internal successors, (259), 110 states have internal predecessors, (259), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 281
[2022-01-31 17:28:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:59,009 INFO L225 Difference]: With dead ends: 354
[2022-01-31 17:28:59,009 INFO L226 Difference]: Without dead ends: 289
[2022-01-31 17:28:59,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742
[2022-01-31 17:28:59,012 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 265 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:59,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 95 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:59,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states.
[2022-01-31 17:28:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288.
[2022-01-31 17:28:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.0390070921985815) internal successors, (293), 282 states have internal predecessors, (293), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 298 transitions.
[2022-01-31 17:28:59,089 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 298 transitions. Word has length 281
[2022-01-31 17:28:59,089 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:59,089 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 298 transitions.
[2022-01-31 17:28:59,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.3333333333333335) internal successors, (259), 110 states have internal predecessors, (259), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 298 transitions.
[2022-01-31 17:28:59,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284
[2022-01-31 17:28:59,090 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:59,090 INFO L514 BasicCegarLoop]: trace histogram [108, 108, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:59,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110
[2022-01-31 17:28:59,090 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1642135145, now seen corresponding path program 108 times
[2022-01-31 17:28:59,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:59,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064078204]
[2022-01-31 17:28:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:59,092 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:59,092 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:59,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:59,104 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:02,544 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:02,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064078204]
[2022-01-31 17:29:02,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1064078204] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:02,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:02,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112
[2022-01-31 17:29:02,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839344619]
[2022-01-31 17:29:02,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:02,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states
[2022-01-31 17:29:02,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:02,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants.
[2022-01-31 17:29:02,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432
[2022-01-31 17:29:02,547 INFO L87 Difference]: Start difference. First operand 288 states and 298 transitions. Second operand has 112 states, 112 states have (on average 2.330357142857143) internal successors, (261), 111 states have internal predecessors, (261), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:06,844 INFO L93 Difference]: Finished difference Result 356 states and 376 transitions.
[2022-01-31 17:29:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states.
[2022-01-31 17:29:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.330357142857143) internal successors, (261), 111 states have internal predecessors, (261), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 283
[2022-01-31 17:29:06,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:06,845 INFO L225 Difference]: With dead ends: 356
[2022-01-31 17:29:06,845 INFO L226 Difference]: Without dead ends: 291
[2022-01-31 17:29:06,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620
[2022-01-31 17:29:06,847 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 267 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:06,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 95 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states.
[2022-01-31 17:29:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 290.
[2022-01-31 17:29:06,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 284 states have (on average 1.0387323943661972) internal successors, (295), 284 states have internal predecessors, (295), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 300 transitions.
[2022-01-31 17:29:06,916 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 300 transitions. Word has length 283
[2022-01-31 17:29:06,916 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:06,916 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 300 transitions.
[2022-01-31 17:29:06,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.330357142857143) internal successors, (261), 111 states have internal predecessors, (261), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 300 transitions.
[2022-01-31 17:29:06,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286
[2022-01-31 17:29:06,916 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:06,917 INFO L514 BasicCegarLoop]: trace histogram [109, 109, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:06,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111
[2022-01-31 17:29:06,917 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:06,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:06,917 INFO L85 PathProgramCache]: Analyzing trace with hash 154894517, now seen corresponding path program 109 times
[2022-01-31 17:29:06,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:06,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879152837]
[2022-01-31 17:29:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:06,918 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:06,918 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:06,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:06,929 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:10,417 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:10,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879152837]
[2022-01-31 17:29:10,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [879152837] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:10,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:10,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113
[2022-01-31 17:29:10,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306814488]
[2022-01-31 17:29:10,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:10,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states
[2022-01-31 17:29:10,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants.
[2022-01-31 17:29:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656
[2022-01-31 17:29:10,419 INFO L87 Difference]: Start difference. First operand 290 states and 300 transitions. Second operand has 113 states, 113 states have (on average 2.327433628318584) internal successors, (263), 112 states have internal predecessors, (263), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:14,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:14,680 INFO L93 Difference]: Finished difference Result 358 states and 378 transitions.
[2022-01-31 17:29:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states.
[2022-01-31 17:29:14,681 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.327433628318584) internal successors, (263), 112 states have internal predecessors, (263), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285
[2022-01-31 17:29:14,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:14,681 INFO L225 Difference]: With dead ends: 358
[2022-01-31 17:29:14,681 INFO L226 Difference]: Without dead ends: 293
[2022-01-31 17:29:14,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506
[2022-01-31 17:29:14,685 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 269 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:14,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 70 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:29:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states.
[2022-01-31 17:29:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292.
[2022-01-31 17:29:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 286 states have (on average 1.0384615384615385) internal successors, (297), 286 states have internal predecessors, (297), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 302 transitions.
[2022-01-31 17:29:14,769 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 302 transitions. Word has length 285
[2022-01-31 17:29:14,769 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:14,769 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 302 transitions.
[2022-01-31 17:29:14,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.327433628318584) internal successors, (263), 112 states have internal predecessors, (263), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:14,769 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 302 transitions.
[2022-01-31 17:29:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2022-01-31 17:29:14,769 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:14,770 INFO L514 BasicCegarLoop]: trace histogram [110, 110, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:14,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112
[2022-01-31 17:29:14,770 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash 523546707, now seen corresponding path program 110 times
[2022-01-31 17:29:14,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:14,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233791715]
[2022-01-31 17:29:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:14,771 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:14,771 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:14,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:14,782 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:18,352 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:18,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233791715]
[2022-01-31 17:29:18,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1233791715] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:18,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:18,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114
[2022-01-31 17:29:18,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539266180]
[2022-01-31 17:29:18,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:18,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states
[2022-01-31 17:29:18,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:18,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants.
[2022-01-31 17:29:18,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882
[2022-01-31 17:29:18,354 INFO L87 Difference]: Start difference. First operand 292 states and 302 transitions. Second operand has 114 states, 114 states have (on average 2.324561403508772) internal successors, (265), 113 states have internal predecessors, (265), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:22,803 INFO L93 Difference]: Finished difference Result 360 states and 380 transitions.
[2022-01-31 17:29:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states.
[2022-01-31 17:29:22,803 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.324561403508772) internal successors, (265), 113 states have internal predecessors, (265), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287
[2022-01-31 17:29:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:22,804 INFO L225 Difference]: With dead ends: 360
[2022-01-31 17:29:22,804 INFO L226 Difference]: Without dead ends: 295
[2022-01-31 17:29:22,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400
[2022-01-31 17:29:22,806 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 271 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:22,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 90 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states.
[2022-01-31 17:29:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294.
[2022-01-31 17:29:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 288 states have (on average 1.0381944444444444) internal successors, (299), 288 states have internal predecessors, (299), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 304 transitions.
[2022-01-31 17:29:22,877 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 304 transitions. Word has length 287
[2022-01-31 17:29:22,877 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:22,877 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 304 transitions.
[2022-01-31 17:29:22,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.324561403508772) internal successors, (265), 113 states have internal predecessors, (265), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:22,877 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 304 transitions.
[2022-01-31 17:29:22,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290
[2022-01-31 17:29:22,878 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:22,878 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:22,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113
[2022-01-31 17:29:22,878 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1683984271, now seen corresponding path program 111 times
[2022-01-31 17:29:22,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:22,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445275434]
[2022-01-31 17:29:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:22,879 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:22,879 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:22,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:22,891 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:26,472 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:26,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445275434]
[2022-01-31 17:29:26,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [445275434] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:26,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:26,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115
[2022-01-31 17:29:26,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534870886]
[2022-01-31 17:29:26,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:26,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states
[2022-01-31 17:29:26,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants.
[2022-01-31 17:29:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110
[2022-01-31 17:29:26,475 INFO L87 Difference]: Start difference. First operand 294 states and 304 transitions. Second operand has 115 states, 115 states have (on average 2.3217391304347825) internal successors, (267), 114 states have internal predecessors, (267), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:30,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:30,863 INFO L93 Difference]: Finished difference Result 362 states and 382 transitions.
[2022-01-31 17:29:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states.
[2022-01-31 17:29:30,864 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.3217391304347825) internal successors, (267), 114 states have internal predecessors, (267), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 289
[2022-01-31 17:29:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:30,864 INFO L225 Difference]: With dead ends: 362
[2022-01-31 17:29:30,864 INFO L226 Difference]: Without dead ends: 297
[2022-01-31 17:29:30,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302
[2022-01-31 17:29:30,867 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 273 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:30,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 70 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:29:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states.
[2022-01-31 17:29:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296.
[2022-01-31 17:29:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 290 states have (on average 1.0379310344827586) internal successors, (301), 290 states have internal predecessors, (301), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 306 transitions.
[2022-01-31 17:29:30,939 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 306 transitions. Word has length 289
[2022-01-31 17:29:30,939 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:30,939 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 306 transitions.
[2022-01-31 17:29:30,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.3217391304347825) internal successors, (267), 114 states have internal predecessors, (267), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:30,939 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 306 transitions.
[2022-01-31 17:29:30,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292
[2022-01-31 17:29:30,940 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:30,940 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:30,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114
[2022-01-31 17:29:30,940 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:30,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:30,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1407409905, now seen corresponding path program 112 times
[2022-01-31 17:29:30,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:30,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380370005]
[2022-01-31 17:29:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:30,941 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:30,941 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:30,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:30,953 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:34,629 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:34,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380370005]
[2022-01-31 17:29:34,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1380370005] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:34,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:34,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116
[2022-01-31 17:29:34,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115145713]
[2022-01-31 17:29:34,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:34,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states
[2022-01-31 17:29:34,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:34,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants.
[2022-01-31 17:29:34,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340
[2022-01-31 17:29:34,632 INFO L87 Difference]: Start difference. First operand 296 states and 306 transitions. Second operand has 116 states, 116 states have (on average 2.3189655172413794) internal successors, (269), 115 states have internal predecessors, (269), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:39,208 INFO L93 Difference]: Finished difference Result 364 states and 384 transitions.
[2022-01-31 17:29:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states.
[2022-01-31 17:29:39,209 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.3189655172413794) internal successors, (269), 115 states have internal predecessors, (269), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 291
[2022-01-31 17:29:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:39,210 INFO L225 Difference]: With dead ends: 364
[2022-01-31 17:29:39,210 INFO L226 Difference]: Without dead ends: 299
[2022-01-31 17:29:39,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212
[2022-01-31 17:29:39,213 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 275 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:39,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 90 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states.
[2022-01-31 17:29:39,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298.
[2022-01-31 17:29:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 292 states have (on average 1.0376712328767124) internal successors, (303), 292 states have internal predecessors, (303), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 308 transitions.
[2022-01-31 17:29:39,297 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 308 transitions. Word has length 291
[2022-01-31 17:29:39,297 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:39,297 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 308 transitions.
[2022-01-31 17:29:39,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.3189655172413794) internal successors, (269), 115 states have internal predecessors, (269), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 308 transitions.
[2022-01-31 17:29:39,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294
[2022-01-31 17:29:39,298 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:39,298 INFO L514 BasicCegarLoop]: trace histogram [113, 113, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:39,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115
[2022-01-31 17:29:39,298 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:39,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1907416531, now seen corresponding path program 113 times
[2022-01-31 17:29:39,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:39,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898119825]
[2022-01-31 17:29:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:39,299 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:39,299 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:39,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:39,311 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:43,072 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:43,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898119825]
[2022-01-31 17:29:43,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1898119825] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:43,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:43,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117
[2022-01-31 17:29:43,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531012862]
[2022-01-31 17:29:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:43,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states
[2022-01-31 17:29:43,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants.
[2022-01-31 17:29:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572
[2022-01-31 17:29:43,075 INFO L87 Difference]: Start difference. First operand 298 states and 308 transitions. Second operand has 117 states, 117 states have (on average 2.3162393162393164) internal successors, (271), 116 states have internal predecessors, (271), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:47,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:47,791 INFO L93 Difference]: Finished difference Result 366 states and 386 transitions.
[2022-01-31 17:29:47,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states.
[2022-01-31 17:29:47,791 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.3162393162393164) internal successors, (271), 116 states have internal predecessors, (271), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 293
[2022-01-31 17:29:47,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:47,792 INFO L225 Difference]: With dead ends: 366
[2022-01-31 17:29:47,792 INFO L226 Difference]: Without dead ends: 301
[2022-01-31 17:29:47,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130
[2022-01-31 17:29:47,794 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 277 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:47,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 85 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:47,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states.
[2022-01-31 17:29:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300.
[2022-01-31 17:29:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.0374149659863945) internal successors, (305), 294 states have internal predecessors, (305), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 310 transitions.
[2022-01-31 17:29:47,869 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 310 transitions. Word has length 293
[2022-01-31 17:29:47,869 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:47,869 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 310 transitions.
[2022-01-31 17:29:47,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.3162393162393164) internal successors, (271), 116 states have internal predecessors, (271), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:47,870 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 310 transitions.
[2022-01-31 17:29:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296
[2022-01-31 17:29:47,870 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:47,870 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:47,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116
[2022-01-31 17:29:47,871 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1377446965, now seen corresponding path program 114 times
[2022-01-31 17:29:47,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:47,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797965683]
[2022-01-31 17:29:47,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:47,872 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:47,872 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:47,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:47,885 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:51,712 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:51,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797965683]
[2022-01-31 17:29:51,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1797965683] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:51,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:51,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118
[2022-01-31 17:29:51,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624278399]
[2022-01-31 17:29:51,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:51,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states
[2022-01-31 17:29:51,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:51,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants.
[2022-01-31 17:29:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806
[2022-01-31 17:29:51,716 INFO L87 Difference]: Start difference. First operand 300 states and 310 transitions. Second operand has 118 states, 118 states have (on average 2.3135593220338984) internal successors, (273), 117 states have internal predecessors, (273), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:56,573 INFO L93 Difference]: Finished difference Result 368 states and 388 transitions.
[2022-01-31 17:29:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states.
[2022-01-31 17:29:56,573 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.3135593220338984) internal successors, (273), 117 states have internal predecessors, (273), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 295
[2022-01-31 17:29:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:56,573 INFO L225 Difference]: With dead ends: 368
[2022-01-31 17:29:56,574 INFO L226 Difference]: Without dead ends: 303
[2022-01-31 17:29:56,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056
[2022-01-31 17:29:56,576 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 279 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:56,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 75 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states.
[2022-01-31 17:29:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302.
[2022-01-31 17:29:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 296 states have (on average 1.037162162162162) internal successors, (307), 296 states have internal predecessors, (307), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 312 transitions.
[2022-01-31 17:29:56,664 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 312 transitions. Word has length 295
[2022-01-31 17:29:56,664 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:56,664 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 312 transitions.
[2022-01-31 17:29:56,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.3135593220338984) internal successors, (273), 117 states have internal predecessors, (273), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 312 transitions.
[2022-01-31 17:29:56,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298
[2022-01-31 17:29:56,665 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:56,665 INFO L514 BasicCegarLoop]: trace histogram [115, 115, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:56,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117
[2022-01-31 17:29:56,666 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1117165033, now seen corresponding path program 115 times
[2022-01-31 17:29:56,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:56,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551626431]
[2022-01-31 17:29:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:56,667 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:56,667 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:56,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:56,680 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,602 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 17:30:00,602 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:00,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551626431]
[2022-01-31 17:30:00,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [551626431] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:00,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:00,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119
[2022-01-31 17:30:00,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414369786]
[2022-01-31 17:30:00,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:00,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states
[2022-01-31 17:30:00,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants.
[2022-01-31 17:30:00,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042
[2022-01-31 17:30:00,605 INFO L87 Difference]: Start difference. First operand 302 states and 312 transitions. Second operand has 119 states, 119 states have (on average 2.310924369747899) internal successors, (275), 118 states have internal predecessors, (275), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:05,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:05,587 INFO L93 Difference]: Finished difference Result 370 states and 390 transitions.
[2022-01-31 17:30:05,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states.
[2022-01-31 17:30:05,588 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.310924369747899) internal successors, (275), 118 states have internal predecessors, (275), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 297
[2022-01-31 17:30:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:05,588 INFO L225 Difference]: With dead ends: 370
[2022-01-31 17:30:05,588 INFO L226 Difference]: Without dead ends: 305
[2022-01-31 17:30:05,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990
[2022-01-31 17:30:05,590 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 281 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:05,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 85 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:05,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states.
[2022-01-31 17:30:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304.
[2022-01-31 17:30:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 298 states have (on average 1.0369127516778522) internal successors, (309), 298 states have internal predecessors, (309), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 314 transitions.
[2022-01-31 17:30:05,669 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 314 transitions. Word has length 297
[2022-01-31 17:30:05,669 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:05,669 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 314 transitions.
[2022-01-31 17:30:05,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.310924369747899) internal successors, (275), 118 states have internal predecessors, (275), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 314 transitions.
[2022-01-31 17:30:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300
[2022-01-31 17:30:05,670 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:05,670 INFO L514 BasicCegarLoop]: trace histogram [116, 116, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:05,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118
[2022-01-31 17:30:05,670 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1847543943, now seen corresponding path program 116 times
[2022-01-31 17:30:05,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:05,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86517843]
[2022-01-31 17:30:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:05,671 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:05,671 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:05,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:05,684 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:09,723 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 17:30:09,723 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86517843]
[2022-01-31 17:30:09,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [86517843] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:09,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:09,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120
[2022-01-31 17:30:09,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218044884]
[2022-01-31 17:30:09,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:09,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states
[2022-01-31 17:30:09,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:09,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants.
[2022-01-31 17:30:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280
[2022-01-31 17:30:09,725 INFO L87 Difference]: Start difference. First operand 304 states and 314 transitions. Second operand has 120 states, 120 states have (on average 2.308333333333333) internal successors, (277), 119 states have internal predecessors, (277), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:14,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:14,660 INFO L93 Difference]: Finished difference Result 372 states and 392 transitions.
[2022-01-31 17:30:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states.
[2022-01-31 17:30:14,660 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.308333333333333) internal successors, (277), 119 states have internal predecessors, (277), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 299
[2022-01-31 17:30:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:14,661 INFO L225 Difference]: With dead ends: 372
[2022-01-31 17:30:14,661 INFO L226 Difference]: Without dead ends: 307
[2022-01-31 17:30:14,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932
[2022-01-31 17:30:14,663 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 283 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:14,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 75 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states.
[2022-01-31 17:30:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306.
[2022-01-31 17:30:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 300 states have (on average 1.0366666666666666) internal successors, (311), 300 states have internal predecessors, (311), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 316 transitions.
[2022-01-31 17:30:14,750 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 316 transitions. Word has length 299
[2022-01-31 17:30:14,750 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:14,750 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 316 transitions.
[2022-01-31 17:30:14,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.308333333333333) internal successors, (277), 119 states have internal predecessors, (277), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 316 transitions.
[2022-01-31 17:30:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302
[2022-01-31 17:30:14,751 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:14,751 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:14,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119
[2022-01-31 17:30:14,751 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash -632960091, now seen corresponding path program 117 times
[2022-01-31 17:30:14,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:14,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763403492]
[2022-01-31 17:30:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:14,753 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:14,753 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:14,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:14,766 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:18,772 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:18,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763403492]
[2022-01-31 17:30:18,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [763403492] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:18,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:18,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121
[2022-01-31 17:30:18,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226329197]
[2022-01-31 17:30:18,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:18,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states
[2022-01-31 17:30:18,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants.
[2022-01-31 17:30:18,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520
[2022-01-31 17:30:18,775 INFO L87 Difference]: Start difference. First operand 306 states and 316 transitions. Second operand has 121 states, 121 states have (on average 2.3057851239669422) internal successors, (279), 120 states have internal predecessors, (279), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:23,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:23,689 INFO L93 Difference]: Finished difference Result 374 states and 394 transitions.
[2022-01-31 17:30:23,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states.
[2022-01-31 17:30:23,689 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.3057851239669422) internal successors, (279), 120 states have internal predecessors, (279), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 301
[2022-01-31 17:30:23,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:23,690 INFO L225 Difference]: With dead ends: 374
[2022-01-31 17:30:23,690 INFO L226 Difference]: Without dead ends: 309
[2022-01-31 17:30:23,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882
[2022-01-31 17:30:23,693 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 285 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:23,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 90 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states.
[2022-01-31 17:30:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 308.
[2022-01-31 17:30:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 302 states have (on average 1.0364238410596027) internal successors, (313), 302 states have internal predecessors, (313), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 318 transitions.
[2022-01-31 17:30:23,790 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 318 transitions. Word has length 301
[2022-01-31 17:30:23,791 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:23,791 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 318 transitions.
[2022-01-31 17:30:23,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.3057851239669422) internal successors, (279), 120 states have internal predecessors, (279), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:23,791 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 318 transitions.
[2022-01-31 17:30:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304
[2022-01-31 17:30:23,792 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:23,792 INFO L514 BasicCegarLoop]: trace histogram [118, 118, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:23,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120
[2022-01-31 17:30:23,792 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:23,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash -690487485, now seen corresponding path program 118 times
[2022-01-31 17:30:23,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:23,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012289515]
[2022-01-31 17:30:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:23,794 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:23,794 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:23,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:23,809 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:27,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:27,910 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:27,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012289515]
[2022-01-31 17:30:27,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1012289515] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:27,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:27,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122
[2022-01-31 17:30:27,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18759464]
[2022-01-31 17:30:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:27,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states
[2022-01-31 17:30:27,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:27,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants.
[2022-01-31 17:30:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762
[2022-01-31 17:30:27,913 INFO L87 Difference]: Start difference. First operand 308 states and 318 transitions. Second operand has 122 states, 122 states have (on average 2.30327868852459) internal successors, (281), 121 states have internal predecessors, (281), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:32,958 INFO L93 Difference]: Finished difference Result 376 states and 396 transitions.
[2022-01-31 17:30:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states.
[2022-01-31 17:30:32,958 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.30327868852459) internal successors, (281), 121 states have internal predecessors, (281), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 303
[2022-01-31 17:30:32,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:32,959 INFO L225 Difference]: With dead ends: 376
[2022-01-31 17:30:32,959 INFO L226 Difference]: Without dead ends: 311
[2022-01-31 17:30:32,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840
[2022-01-31 17:30:32,961 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 287 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:32,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 95 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states.
[2022-01-31 17:30:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 310.
[2022-01-31 17:30:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 304 states have (on average 1.0361842105263157) internal successors, (315), 304 states have internal predecessors, (315), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:33,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 320 transitions.
[2022-01-31 17:30:33,044 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 320 transitions. Word has length 303
[2022-01-31 17:30:33,044 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:33,044 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 320 transitions.
[2022-01-31 17:30:33,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.30327868852459) internal successors, (281), 121 states have internal predecessors, (281), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:33,044 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 320 transitions.
[2022-01-31 17:30:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306
[2022-01-31 17:30:33,045 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:33,045 INFO L514 BasicCegarLoop]: trace histogram [119, 119, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:33,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121
[2022-01-31 17:30:33,045 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:33,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:33,045 INFO L85 PathProgramCache]: Analyzing trace with hash -139738271, now seen corresponding path program 119 times
[2022-01-31 17:30:33,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:33,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413053089]
[2022-01-31 17:30:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:33,046 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:33,047 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:33,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:33,060 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:37,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:37,245 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:37,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413053089]
[2022-01-31 17:30:37,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1413053089] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:37,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:37,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123
[2022-01-31 17:30:37,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863759039]
[2022-01-31 17:30:37,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:37,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states
[2022-01-31 17:30:37,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:37,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants.
[2022-01-31 17:30:37,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006
[2022-01-31 17:30:37,248 INFO L87 Difference]: Start difference. First operand 310 states and 320 transitions. Second operand has 123 states, 123 states have (on average 2.3008130081300813) internal successors, (283), 122 states have internal predecessors, (283), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:42,355 INFO L93 Difference]: Finished difference Result 378 states and 398 transitions.
[2022-01-31 17:30:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states.
[2022-01-31 17:30:42,355 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.3008130081300813) internal successors, (283), 122 states have internal predecessors, (283), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 305
[2022-01-31 17:30:42,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:42,356 INFO L225 Difference]: With dead ends: 378
[2022-01-31 17:30:42,356 INFO L226 Difference]: Without dead ends: 313
[2022-01-31 17:30:42,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806
[2022-01-31 17:30:42,358 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 289 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:42,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 75 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states.
[2022-01-31 17:30:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312.
[2022-01-31 17:30:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 306 states have (on average 1.0359477124183007) internal successors, (317), 306 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 322 transitions.
[2022-01-31 17:30:42,443 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 322 transitions. Word has length 305
[2022-01-31 17:30:42,443 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:42,443 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 322 transitions.
[2022-01-31 17:30:42,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.3008130081300813) internal successors, (283), 122 states have internal predecessors, (283), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:42,444 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 322 transitions.
[2022-01-31 17:30:42,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308
[2022-01-31 17:30:42,444 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:42,444 INFO L514 BasicCegarLoop]: trace histogram [120, 120, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:42,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122
[2022-01-31 17:30:42,444 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:42,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:42,445 INFO L85 PathProgramCache]: Analyzing trace with hash 849278975, now seen corresponding path program 120 times
[2022-01-31 17:30:42,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:42,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924311745]
[2022-01-31 17:30:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:42,446 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:42,446 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:42,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:42,459 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:46,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:46,698 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:46,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924311745]
[2022-01-31 17:30:46,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1924311745] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:46,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:46,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124
[2022-01-31 17:30:46,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460074520]
[2022-01-31 17:30:46,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:46,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states
[2022-01-31 17:30:46,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:46,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants.
[2022-01-31 17:30:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252
[2022-01-31 17:30:46,701 INFO L87 Difference]: Start difference. First operand 312 states and 322 transitions. Second operand has 124 states, 124 states have (on average 2.2983870967741935) internal successors, (285), 123 states have internal predecessors, (285), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:51,906 INFO L93 Difference]: Finished difference Result 380 states and 400 transitions.
[2022-01-31 17:30:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states.
[2022-01-31 17:30:51,906 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.2983870967741935) internal successors, (285), 123 states have internal predecessors, (285), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 307
[2022-01-31 17:30:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:51,907 INFO L225 Difference]: With dead ends: 380
[2022-01-31 17:30:51,907 INFO L226 Difference]: Without dead ends: 315
[2022-01-31 17:30:51,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780
[2022-01-31 17:30:51,909 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 291 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:51,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 80 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states.
[2022-01-31 17:30:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 314.
[2022-01-31 17:30:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 308 states have (on average 1.0357142857142858) internal successors, (319), 308 states have internal predecessors, (319), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 324 transitions.
[2022-01-31 17:30:51,993 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 324 transitions. Word has length 307
[2022-01-31 17:30:51,993 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:51,993 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 324 transitions.
[2022-01-31 17:30:51,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.2983870967741935) internal successors, (285), 123 states have internal predecessors, (285), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 324 transitions.
[2022-01-31 17:30:51,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310
[2022-01-31 17:30:51,994 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:51,994 INFO L514 BasicCegarLoop]: trace histogram [121, 121, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:51,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123
[2022-01-31 17:30:51,994 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:51,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:51,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2107079965, now seen corresponding path program 121 times
[2022-01-31 17:30:51,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:51,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044053841]
[2022-01-31 17:30:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:51,996 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:51,996 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:51,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:52,009 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:56,339 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:56,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044053841]
[2022-01-31 17:30:56,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2044053841] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:56,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:56,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125
[2022-01-31 17:30:56,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197677536]
[2022-01-31 17:30:56,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:56,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states
[2022-01-31 17:30:56,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:56,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants.
[2022-01-31 17:30:56,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500
[2022-01-31 17:30:56,341 INFO L87 Difference]: Start difference. First operand 314 states and 324 transitions. Second operand has 125 states, 125 states have (on average 2.296) internal successors, (287), 124 states have internal predecessors, (287), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:01,706 INFO L93 Difference]: Finished difference Result 382 states and 402 transitions.
[2022-01-31 17:31:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states.
[2022-01-31 17:31:01,707 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.296) internal successors, (287), 124 states have internal predecessors, (287), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 309
[2022-01-31 17:31:01,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:01,707 INFO L225 Difference]: With dead ends: 382
[2022-01-31 17:31:01,707 INFO L226 Difference]: Without dead ends: 317
[2022-01-31 17:31:01,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762
[2022-01-31 17:31:01,710 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 293 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:01,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 90 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states.
[2022-01-31 17:31:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 316.
[2022-01-31 17:31:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 310 states have (on average 1.0354838709677419) internal successors, (321), 310 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 326 transitions.
[2022-01-31 17:31:01,805 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 326 transitions. Word has length 309
[2022-01-31 17:31:01,805 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:01,805 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 326 transitions.
[2022-01-31 17:31:01,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.296) internal successors, (287), 124 states have internal predecessors, (287), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 326 transitions.
[2022-01-31 17:31:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312
[2022-01-31 17:31:01,806 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:01,806 INFO L514 BasicCegarLoop]: trace histogram [122, 122, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:01,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124
[2022-01-31 17:31:01,806 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:01,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:01,806 INFO L85 PathProgramCache]: Analyzing trace with hash -326946117, now seen corresponding path program 122 times
[2022-01-31 17:31:01,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:01,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424143127]
[2022-01-31 17:31:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:01,808 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:01,808 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:01,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:01,821 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:06,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:06,230 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:06,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424143127]
[2022-01-31 17:31:06,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [424143127] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:06,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:06,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126
[2022-01-31 17:31:06,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014170237]
[2022-01-31 17:31:06,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:06,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states
[2022-01-31 17:31:06,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:06,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants.
[2022-01-31 17:31:06,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750
[2022-01-31 17:31:06,232 INFO L87 Difference]: Start difference. First operand 316 states and 326 transitions. Second operand has 126 states, 126 states have (on average 2.2936507936507935) internal successors, (289), 125 states have internal predecessors, (289), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:11,665 INFO L93 Difference]: Finished difference Result 384 states and 404 transitions.
[2022-01-31 17:31:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states.
[2022-01-31 17:31:11,666 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.2936507936507935) internal successors, (289), 125 states have internal predecessors, (289), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 311
[2022-01-31 17:31:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:11,667 INFO L225 Difference]: With dead ends: 384
[2022-01-31 17:31:11,667 INFO L226 Difference]: Without dead ends: 319
[2022-01-31 17:31:11,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752
[2022-01-31 17:31:11,669 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 295 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:11,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 95 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states.
[2022-01-31 17:31:11,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318.
[2022-01-31 17:31:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 312 states have (on average 1.0352564102564104) internal successors, (323), 312 states have internal predecessors, (323), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 328 transitions.
[2022-01-31 17:31:11,759 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 328 transitions. Word has length 311
[2022-01-31 17:31:11,759 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:11,759 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 328 transitions.
[2022-01-31 17:31:11,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.2936507936507935) internal successors, (289), 125 states have internal predecessors, (289), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:11,759 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 328 transitions.
[2022-01-31 17:31:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314
[2022-01-31 17:31:11,760 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:11,760 INFO L514 BasicCegarLoop]: trace histogram [123, 123, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:11,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125
[2022-01-31 17:31:11,760 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:11,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1331165401, now seen corresponding path program 123 times
[2022-01-31 17:31:11,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:11,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751976492]
[2022-01-31 17:31:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:11,762 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:11,762 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:11,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:11,775 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:16,218 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:16,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751976492]
[2022-01-31 17:31:16,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1751976492] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:16,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:16,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127
[2022-01-31 17:31:16,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547097639]
[2022-01-31 17:31:16,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:16,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states
[2022-01-31 17:31:16,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants.
[2022-01-31 17:31:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002
[2022-01-31 17:31:16,220 INFO L87 Difference]: Start difference. First operand 318 states and 328 transitions. Second operand has 127 states, 127 states have (on average 2.2913385826771653) internal successors, (291), 126 states have internal predecessors, (291), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:21,501 INFO L93 Difference]: Finished difference Result 386 states and 406 transitions.
[2022-01-31 17:31:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states.
[2022-01-31 17:31:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.2913385826771653) internal successors, (291), 126 states have internal predecessors, (291), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 313
[2022-01-31 17:31:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:21,502 INFO L225 Difference]: With dead ends: 386
[2022-01-31 17:31:21,502 INFO L226 Difference]: Without dead ends: 321
[2022-01-31 17:31:21,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750
[2022-01-31 17:31:21,504 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 297 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:21,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 75 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states.
[2022-01-31 17:31:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320.
[2022-01-31 17:31:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 314 states have (on average 1.035031847133758) internal successors, (325), 314 states have internal predecessors, (325), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 330 transitions.
[2022-01-31 17:31:21,594 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 330 transitions. Word has length 313
[2022-01-31 17:31:21,594 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:21,594 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 330 transitions.
[2022-01-31 17:31:21,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.2913385826771653) internal successors, (291), 126 states have internal predecessors, (291), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:21,594 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 330 transitions.
[2022-01-31 17:31:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316
[2022-01-31 17:31:21,595 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:21,595 INFO L514 BasicCegarLoop]: trace histogram [124, 124, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:21,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126
[2022-01-31 17:31:21,595 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:21,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:21,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1343467383, now seen corresponding path program 124 times
[2022-01-31 17:31:21,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:21,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473514039]
[2022-01-31 17:31:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:21,596 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:21,596 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:21,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:21,610 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:26,066 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:26,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473514039]
[2022-01-31 17:31:26,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1473514039] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:26,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:26,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128
[2022-01-31 17:31:26,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109991962]
[2022-01-31 17:31:26,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:26,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states
[2022-01-31 17:31:26,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants.
[2022-01-31 17:31:26,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256
[2022-01-31 17:31:26,069 INFO L87 Difference]: Start difference. First operand 320 states and 330 transitions. Second operand has 128 states, 128 states have (on average 2.2890625) internal successors, (293), 127 states have internal predecessors, (293), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:31,425 INFO L93 Difference]: Finished difference Result 388 states and 408 transitions.
[2022-01-31 17:31:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states.
[2022-01-31 17:31:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.2890625) internal successors, (293), 127 states have internal predecessors, (293), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 315
[2022-01-31 17:31:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:31,426 INFO L225 Difference]: With dead ends: 388
[2022-01-31 17:31:31,426 INFO L226 Difference]: Without dead ends: 323
[2022-01-31 17:31:31,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756
[2022-01-31 17:31:31,428 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 299 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:31,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 80 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states.
[2022-01-31 17:31:31,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322.
[2022-01-31 17:31:31,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 316 states have (on average 1.0348101265822784) internal successors, (327), 316 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 332 transitions.
[2022-01-31 17:31:31,521 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 332 transitions. Word has length 315
[2022-01-31 17:31:31,521 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:31,521 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 332 transitions.
[2022-01-31 17:31:31,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.2890625) internal successors, (293), 127 states have internal predecessors, (293), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:31,521 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 332 transitions.
[2022-01-31 17:31:31,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318
[2022-01-31 17:31:31,522 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:31,522 INFO L514 BasicCegarLoop]: trace histogram [125, 125, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:31,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127
[2022-01-31 17:31:31,522 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:31,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:31,522 INFO L85 PathProgramCache]: Analyzing trace with hash 280770197, now seen corresponding path program 125 times
[2022-01-31 17:31:31,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:31,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037437390]
[2022-01-31 17:31:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:31,523 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:31,524 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:31,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:31,537 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:36,011 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:36,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037437390]
[2022-01-31 17:31:36,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2037437390] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:36,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:36,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129
[2022-01-31 17:31:36,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062976104]
[2022-01-31 17:31:36,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:36,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states
[2022-01-31 17:31:36,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:36,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants.
[2022-01-31 17:31:36,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512
[2022-01-31 17:31:36,014 INFO L87 Difference]: Start difference. First operand 322 states and 332 transitions. Second operand has 129 states, 129 states have (on average 2.2868217054263567) internal successors, (295), 128 states have internal predecessors, (295), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:41,501 INFO L93 Difference]: Finished difference Result 390 states and 410 transitions.
[2022-01-31 17:31:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states.
[2022-01-31 17:31:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.2868217054263567) internal successors, (295), 128 states have internal predecessors, (295), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 317
[2022-01-31 17:31:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:41,502 INFO L225 Difference]: With dead ends: 390
[2022-01-31 17:31:41,502 INFO L226 Difference]: Without dead ends: 325
[2022-01-31 17:31:41,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770
[2022-01-31 17:31:41,505 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 301 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:41,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 70 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:41,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states.
[2022-01-31 17:31:41,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 324.
[2022-01-31 17:31:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 318 states have (on average 1.0345911949685536) internal successors, (329), 318 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 334 transitions.
[2022-01-31 17:31:41,613 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 334 transitions. Word has length 317
[2022-01-31 17:31:41,613 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:41,613 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 334 transitions.
[2022-01-31 17:31:41,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.2868217054263567) internal successors, (295), 128 states have internal predecessors, (295), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:41,613 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 334 transitions.
[2022-01-31 17:31:41,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320
[2022-01-31 17:31:41,614 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:41,614 INFO L514 BasicCegarLoop]: trace histogram [126, 126, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:41,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128
[2022-01-31 17:31:41,614 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:41,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1230990899, now seen corresponding path program 126 times
[2022-01-31 17:31:41,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:41,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562816313]
[2022-01-31 17:31:41,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:41,616 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:41,616 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:41,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:41,629 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:46,147 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:46,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562816313]
[2022-01-31 17:31:46,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1562816313] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:46,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:46,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130
[2022-01-31 17:31:46,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681190139]
[2022-01-31 17:31:46,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:46,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states
[2022-01-31 17:31:46,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants.
[2022-01-31 17:31:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770
[2022-01-31 17:31:46,150 INFO L87 Difference]: Start difference. First operand 324 states and 334 transitions. Second operand has 130 states, 130 states have (on average 2.2846153846153845) internal successors, (297), 129 states have internal predecessors, (297), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:51,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:51,753 INFO L93 Difference]: Finished difference Result 392 states and 412 transitions.
[2022-01-31 17:31:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states.
[2022-01-31 17:31:51,754 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.2846153846153845) internal successors, (297), 129 states have internal predecessors, (297), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 319
[2022-01-31 17:31:51,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:51,754 INFO L225 Difference]: With dead ends: 392
[2022-01-31 17:31:51,754 INFO L226 Difference]: Without dead ends: 327
[2022-01-31 17:31:51,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792
[2022-01-31 17:31:51,758 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 303 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:51,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 90 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states.
[2022-01-31 17:31:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 326.
[2022-01-31 17:31:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 320 states have (on average 1.034375) internal successors, (331), 320 states have internal predecessors, (331), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 336 transitions.
[2022-01-31 17:31:51,863 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 336 transitions. Word has length 319
[2022-01-31 17:31:51,863 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:51,863 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 336 transitions.
[2022-01-31 17:31:51,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.2846153846153845) internal successors, (297), 129 states have internal predecessors, (297), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 336 transitions.
[2022-01-31 17:31:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322
[2022-01-31 17:31:51,864 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:51,864 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:51,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129
[2022-01-31 17:31:51,864 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:51,864 INFO L85 PathProgramCache]: Analyzing trace with hash -434948527, now seen corresponding path program 127 times
[2022-01-31 17:31:51,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:51,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839118210]
[2022-01-31 17:31:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:51,869 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:51,869 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:51,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:51,882 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:56,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:56,472 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:56,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839118210]
[2022-01-31 17:31:56,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [839118210] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:56,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:56,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131
[2022-01-31 17:31:56,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51463118]
[2022-01-31 17:31:56,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:56,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states
[2022-01-31 17:31:56,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:56,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants.
[2022-01-31 17:31:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030
[2022-01-31 17:31:56,476 INFO L87 Difference]: Start difference. First operand 326 states and 336 transitions. Second operand has 131 states, 131 states have (on average 2.282442748091603) internal successors, (299), 130 states have internal predecessors, (299), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:02,183 INFO L93 Difference]: Finished difference Result 394 states and 414 transitions.
[2022-01-31 17:32:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states.
[2022-01-31 17:32:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.282442748091603) internal successors, (299), 130 states have internal predecessors, (299), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 321
[2022-01-31 17:32:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:02,184 INFO L225 Difference]: With dead ends: 394
[2022-01-31 17:32:02,184 INFO L226 Difference]: Without dead ends: 329
[2022-01-31 17:32:02,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8255 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822
[2022-01-31 17:32:02,187 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 305 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:02,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 90 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states.
[2022-01-31 17:32:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328.
[2022-01-31 17:32:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 322 states have (on average 1.0341614906832297) internal successors, (333), 322 states have internal predecessors, (333), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 338 transitions.
[2022-01-31 17:32:02,285 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 338 transitions. Word has length 321
[2022-01-31 17:32:02,286 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:02,286 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 338 transitions.
[2022-01-31 17:32:02,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.282442748091603) internal successors, (299), 130 states have internal predecessors, (299), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 338 transitions.
[2022-01-31 17:32:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324
[2022-01-31 17:32:02,287 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:02,287 INFO L514 BasicCegarLoop]: trace histogram [128, 128, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:02,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130
[2022-01-31 17:32:02,287 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash 620064495, now seen corresponding path program 128 times
[2022-01-31 17:32:02,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:02,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461405083]
[2022-01-31 17:32:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:02,288 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:02,288 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:02,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:02,302 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:07,062 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:07,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461405083]
[2022-01-31 17:32:07,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [461405083] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:07,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:07,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132
[2022-01-31 17:32:07,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757612812]
[2022-01-31 17:32:07,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:07,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states
[2022-01-31 17:32:07,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:07,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants.
[2022-01-31 17:32:07,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292
[2022-01-31 17:32:07,065 INFO L87 Difference]: Start difference. First operand 328 states and 338 transitions. Second operand has 132 states, 132 states have (on average 2.2803030303030303) internal successors, (301), 131 states have internal predecessors, (301), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:12,812 INFO L93 Difference]: Finished difference Result 396 states and 416 transitions.
[2022-01-31 17:32:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states.
[2022-01-31 17:32:12,812 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.2803030303030303) internal successors, (301), 131 states have internal predecessors, (301), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 323
[2022-01-31 17:32:12,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:12,813 INFO L225 Difference]: With dead ends: 396
[2022-01-31 17:32:12,813 INFO L226 Difference]: Without dead ends: 331
[2022-01-31 17:32:12,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=25545, Invalid=42315, Unknown=0, NotChecked=0, Total=67860
[2022-01-31 17:32:12,816 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 307 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:12,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 85 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states.
[2022-01-31 17:32:12,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 330.
[2022-01-31 17:32:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 324 states have (on average 1.0339506172839505) internal successors, (335), 324 states have internal predecessors, (335), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 340 transitions.
[2022-01-31 17:32:12,925 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 340 transitions. Word has length 323
[2022-01-31 17:32:12,926 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:12,926 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 340 transitions.
[2022-01-31 17:32:12,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.2803030303030303) internal successors, (301), 131 states have internal predecessors, (301), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 340 transitions.
[2022-01-31 17:32:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326
[2022-01-31 17:32:12,927 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:12,927 INFO L514 BasicCegarLoop]: trace histogram [129, 129, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:12,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131
[2022-01-31 17:32:12,927 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash 875296781, now seen corresponding path program 129 times
[2022-01-31 17:32:12,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:12,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190759746]
[2022-01-31 17:32:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:12,928 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:12,928 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:12,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:12,942 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:17,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:17,649 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:17,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190759746]
[2022-01-31 17:32:17,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [190759746] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:17,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:17,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133
[2022-01-31 17:32:17,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344909158]
[2022-01-31 17:32:17,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:17,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states
[2022-01-31 17:32:17,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants.
[2022-01-31 17:32:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556
[2022-01-31 17:32:17,652 INFO L87 Difference]: Start difference. First operand 330 states and 340 transitions. Second operand has 133 states, 133 states have (on average 2.2781954887218046) internal successors, (303), 132 states have internal predecessors, (303), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:23,460 INFO L93 Difference]: Finished difference Result 398 states and 418 transitions.
[2022-01-31 17:32:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states.
[2022-01-31 17:32:23,460 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 2.2781954887218046) internal successors, (303), 132 states have internal predecessors, (303), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 325
[2022-01-31 17:32:23,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:23,461 INFO L225 Difference]: With dead ends: 398
[2022-01-31 17:32:23,461 INFO L226 Difference]: Without dead ends: 333
[2022-01-31 17:32:23,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8514 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=25938, Invalid=42968, Unknown=0, NotChecked=0, Total=68906
[2022-01-31 17:32:23,464 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 309 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:23,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 80 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states.
[2022-01-31 17:32:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332.
[2022-01-31 17:32:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 326 states have (on average 1.0337423312883436) internal successors, (337), 326 states have internal predecessors, (337), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 342 transitions.
[2022-01-31 17:32:23,561 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 342 transitions. Word has length 325
[2022-01-31 17:32:23,561 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:23,561 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 342 transitions.
[2022-01-31 17:32:23,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 2.2781954887218046) internal successors, (303), 132 states have internal predecessors, (303), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 342 transitions.
[2022-01-31 17:32:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2022-01-31 17:32:23,563 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:23,563 INFO L514 BasicCegarLoop]: trace histogram [130, 130, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:23,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132
[2022-01-31 17:32:23,563 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:23,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:23,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1340387755, now seen corresponding path program 130 times
[2022-01-31 17:32:23,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:23,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152926031]
[2022-01-31 17:32:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:23,564 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:23,564 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:23,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:23,579 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:28,383 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:28,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152926031]
[2022-01-31 17:32:28,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1152926031] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:28,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:28,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134
[2022-01-31 17:32:28,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719110450]
[2022-01-31 17:32:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:28,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states
[2022-01-31 17:32:28,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:28,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants.
[2022-01-31 17:32:28,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822
[2022-01-31 17:32:28,386 INFO L87 Difference]: Start difference. First operand 332 states and 342 transitions. Second operand has 134 states, 134 states have (on average 2.2761194029850746) internal successors, (305), 133 states have internal predecessors, (305), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:34,331 INFO L93 Difference]: Finished difference Result 400 states and 420 transitions.
[2022-01-31 17:32:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states.
[2022-01-31 17:32:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.2761194029850746) internal successors, (305), 133 states have internal predecessors, (305), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 327
[2022-01-31 17:32:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:34,332 INFO L225 Difference]: With dead ends: 400
[2022-01-31 17:32:34,332 INFO L226 Difference]: Without dead ends: 335
[2022-01-31 17:32:34,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=26334, Invalid=43626, Unknown=0, NotChecked=0, Total=69960
[2022-01-31 17:32:34,335 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 311 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:34,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 85 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states.
[2022-01-31 17:32:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334.
[2022-01-31 17:32:34,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 328 states have (on average 1.0335365853658536) internal successors, (339), 328 states have internal predecessors, (339), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 344 transitions.
[2022-01-31 17:32:34,442 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 344 transitions. Word has length 327
[2022-01-31 17:32:34,443 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:34,443 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 344 transitions.
[2022-01-31 17:32:34,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.2761194029850746) internal successors, (305), 133 states have internal predecessors, (305), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 344 transitions.
[2022-01-31 17:32:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2022-01-31 17:32:34,444 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:34,444 INFO L514 BasicCegarLoop]: trace histogram [131, 131, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:34,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133
[2022-01-31 17:32:34,444 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1616214985, now seen corresponding path program 131 times
[2022-01-31 17:32:34,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:34,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283499607]
[2022-01-31 17:32:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:34,445 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:34,445 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:34,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:34,459 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:39,358 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 17:32:39,358 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:39,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283499607]
[2022-01-31 17:32:39,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [283499607] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:39,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:39,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135
[2022-01-31 17:32:39,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997433142]
[2022-01-31 17:32:39,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:39,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states
[2022-01-31 17:32:39,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants.
[2022-01-31 17:32:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090
[2022-01-31 17:32:39,362 INFO L87 Difference]: Start difference. First operand 334 states and 344 transitions. Second operand has 135 states, 135 states have (on average 2.274074074074074) internal successors, (307), 134 states have internal predecessors, (307), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:45,412 INFO L93 Difference]: Finished difference Result 402 states and 422 transitions.
[2022-01-31 17:32:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states.
[2022-01-31 17:32:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.274074074074074) internal successors, (307), 134 states have internal predecessors, (307), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 329
[2022-01-31 17:32:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:45,413 INFO L225 Difference]: With dead ends: 402
[2022-01-31 17:32:45,413 INFO L226 Difference]: Without dead ends: 337
[2022-01-31 17:32:45,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8777 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022
[2022-01-31 17:32:45,416 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 313 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:45,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 95 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states.
[2022-01-31 17:32:45,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 336.
[2022-01-31 17:32:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 330 states have (on average 1.0333333333333334) internal successors, (341), 330 states have internal predecessors, (341), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 346 transitions.
[2022-01-31 17:32:45,517 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 346 transitions. Word has length 329
[2022-01-31 17:32:45,517 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:45,517 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 346 transitions.
[2022-01-31 17:32:45,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 2.274074074074074) internal successors, (307), 134 states have internal predecessors, (307), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 346 transitions.
[2022-01-31 17:32:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332
[2022-01-31 17:32:45,518 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:45,518 INFO L514 BasicCegarLoop]: trace histogram [132, 132, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:45,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134
[2022-01-31 17:32:45,518 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:45,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:45,519 INFO L85 PathProgramCache]: Analyzing trace with hash 398210663, now seen corresponding path program 132 times
[2022-01-31 17:32:45,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:45,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071379694]
[2022-01-31 17:32:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:45,521 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:45,522 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:45,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:45,536 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:50,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:50,496 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:50,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071379694]
[2022-01-31 17:32:50,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1071379694] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:50,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:50,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136
[2022-01-31 17:32:50,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596048561]
[2022-01-31 17:32:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:50,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states
[2022-01-31 17:32:50,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants.
[2022-01-31 17:32:50,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360
[2022-01-31 17:32:50,499 INFO L87 Difference]: Start difference. First operand 336 states and 346 transitions. Second operand has 136 states, 136 states have (on average 2.2720588235294117) internal successors, (309), 135 states have internal predecessors, (309), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:56,585 INFO L93 Difference]: Finished difference Result 404 states and 424 transitions.
[2022-01-31 17:32:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states.
[2022-01-31 17:32:56,586 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.2720588235294117) internal successors, (309), 135 states have internal predecessors, (309), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 331
[2022-01-31 17:32:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:56,586 INFO L225 Difference]: With dead ends: 404
[2022-01-31 17:32:56,586 INFO L226 Difference]: Without dead ends: 339
[2022-01-31 17:32:56,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8910 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=27135, Invalid=44957, Unknown=0, NotChecked=0, Total=72092
[2022-01-31 17:32:56,589 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 315 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:56,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 75 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states.
[2022-01-31 17:32:56,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 338.
[2022-01-31 17:32:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 332 states have (on average 1.033132530120482) internal successors, (343), 332 states have internal predecessors, (343), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 348 transitions.
[2022-01-31 17:32:56,693 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 348 transitions. Word has length 331
[2022-01-31 17:32:56,693 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:56,693 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 348 transitions.
[2022-01-31 17:32:56,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 2.2720588235294117) internal successors, (309), 135 states have internal predecessors, (309), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 348 transitions.
[2022-01-31 17:32:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334
[2022-01-31 17:32:56,694 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:56,694 INFO L514 BasicCegarLoop]: trace histogram [133, 133, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:56,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135
[2022-01-31 17:32:56,694 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:56,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:56,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1872838267, now seen corresponding path program 133 times
[2022-01-31 17:32:56,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:56,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050672355]
[2022-01-31 17:32:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:56,699 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:56,699 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:56,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:56,714 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:01,722 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:01,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050672355]
[2022-01-31 17:33:01,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2050672355] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:01,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:01,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137
[2022-01-31 17:33:01,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741757332]
[2022-01-31 17:33:01,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:01,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states
[2022-01-31 17:33:01,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants.
[2022-01-31 17:33:01,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632
[2022-01-31 17:33:01,725 INFO L87 Difference]: Start difference. First operand 338 states and 348 transitions. Second operand has 137 states, 137 states have (on average 2.27007299270073) internal successors, (311), 136 states have internal predecessors, (311), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:07,882 INFO L93 Difference]: Finished difference Result 406 states and 426 transitions.
[2022-01-31 17:33:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states.
[2022-01-31 17:33:07,882 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.27007299270073) internal successors, (311), 136 states have internal predecessors, (311), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 333
[2022-01-31 17:33:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:07,883 INFO L225 Difference]: With dead ends: 406
[2022-01-31 17:33:07,883 INFO L226 Difference]: Without dead ends: 341
[2022-01-31 17:33:07,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9044 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=27540, Invalid=45630, Unknown=0, NotChecked=0, Total=73170
[2022-01-31 17:33:07,886 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 317 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:07,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 85 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:33:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states.
[2022-01-31 17:33:07,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 340.
[2022-01-31 17:33:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 334 states have (on average 1.032934131736527) internal successors, (345), 334 states have internal predecessors, (345), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 350 transitions.
[2022-01-31 17:33:08,000 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 350 transitions. Word has length 333
[2022-01-31 17:33:08,000 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:08,000 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 350 transitions.
[2022-01-31 17:33:08,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.27007299270073) internal successors, (311), 136 states have internal predecessors, (311), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 350 transitions.
[2022-01-31 17:33:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336
[2022-01-31 17:33:08,001 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:08,001 INFO L514 BasicCegarLoop]: trace histogram [134, 134, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:08,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136
[2022-01-31 17:33:08,002 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:08,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:08,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1787493667, now seen corresponding path program 134 times
[2022-01-31 17:33:08,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:08,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207946341]
[2022-01-31 17:33:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:08,003 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:08,003 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:08,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:08,017 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:13,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:13,131 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:13,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207946341]
[2022-01-31 17:33:13,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [207946341] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:13,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:13,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138
[2022-01-31 17:33:13,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120188965]
[2022-01-31 17:33:13,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:13,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states
[2022-01-31 17:33:13,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:13,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants.
[2022-01-31 17:33:13,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906
[2022-01-31 17:33:13,134 INFO L87 Difference]: Start difference. First operand 340 states and 350 transitions. Second operand has 138 states, 138 states have (on average 2.2681159420289854) internal successors, (313), 137 states have internal predecessors, (313), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:19,380 INFO L93 Difference]: Finished difference Result 408 states and 428 transitions.
[2022-01-31 17:33:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states.
[2022-01-31 17:33:19,381 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 2.2681159420289854) internal successors, (313), 137 states have internal predecessors, (313), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 335
[2022-01-31 17:33:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:19,382 INFO L225 Difference]: With dead ends: 408
[2022-01-31 17:33:19,382 INFO L226 Difference]: Without dead ends: 343
[2022-01-31 17:33:19,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9179 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=27948, Invalid=46308, Unknown=0, NotChecked=0, Total=74256
[2022-01-31 17:33:19,385 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 319 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:19,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 85 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:33:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states.
[2022-01-31 17:33:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 342.
[2022-01-31 17:33:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 336 states have (on average 1.0327380952380953) internal successors, (347), 336 states have internal predecessors, (347), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 352 transitions.
[2022-01-31 17:33:19,504 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 352 transitions. Word has length 335
[2022-01-31 17:33:19,504 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:19,504 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 352 transitions.
[2022-01-31 17:33:19,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 2.2681159420289854) internal successors, (313), 137 states have internal predecessors, (313), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 352 transitions.
[2022-01-31 17:33:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338
[2022-01-31 17:33:19,505 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:19,505 INFO L514 BasicCegarLoop]: trace histogram [135, 135, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:19,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137
[2022-01-31 17:33:19,505 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:19,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1788266817, now seen corresponding path program 135 times
[2022-01-31 17:33:19,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:19,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827709810]
[2022-01-31 17:33:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:19,507 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:19,507 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:19,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:19,521 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:24,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:24,785 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:24,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827709810]
[2022-01-31 17:33:24,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [827709810] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:24,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:24,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [139] imperfect sequences [] total 139
[2022-01-31 17:33:24,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055129059]
[2022-01-31 17:33:24,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:24,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states
[2022-01-31 17:33:24,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants.
[2022-01-31 17:33:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182
[2022-01-31 17:33:24,789 INFO L87 Difference]: Start difference. First operand 342 states and 352 transitions. Second operand has 139 states, 139 states have (on average 2.2661870503597124) internal successors, (315), 138 states have internal predecessors, (315), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:31,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:31,158 INFO L93 Difference]: Finished difference Result 410 states and 430 transitions.
[2022-01-31 17:33:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states.
[2022-01-31 17:33:31,159 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.2661870503597124) internal successors, (315), 138 states have internal predecessors, (315), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 337
[2022-01-31 17:33:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:31,159 INFO L225 Difference]: With dead ends: 410
[2022-01-31 17:33:31,159 INFO L226 Difference]: Without dead ends: 345
[2022-01-31 17:33:31,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9315 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350
[2022-01-31 17:33:31,162 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 321 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:31,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 95 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:33:31,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states.
[2022-01-31 17:33:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 344.
[2022-01-31 17:33:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 338 states have (on average 1.032544378698225) internal successors, (349), 338 states have internal predecessors, (349), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 354 transitions.
[2022-01-31 17:33:31,281 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 354 transitions. Word has length 337
[2022-01-31 17:33:31,281 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:31,281 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 354 transitions.
[2022-01-31 17:33:31,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.2661870503597124) internal successors, (315), 138 states have internal predecessors, (315), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:31,282 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 354 transitions.
[2022-01-31 17:33:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340
[2022-01-31 17:33:31,282 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:31,282 INFO L514 BasicCegarLoop]: trace histogram [136, 136, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:31,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138
[2022-01-31 17:33:31,282 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:31,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1763703329, now seen corresponding path program 136 times
[2022-01-31 17:33:31,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:31,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688880643]
[2022-01-31 17:33:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:31,284 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:31,284 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:31,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:31,299 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:36,589 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:36,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688880643]
[2022-01-31 17:33:36,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [688880643] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:36,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:36,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [140] imperfect sequences [] total 140
[2022-01-31 17:33:36,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255075263]
[2022-01-31 17:33:36,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:36,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states
[2022-01-31 17:33:36,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants.
[2022-01-31 17:33:36,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460
[2022-01-31 17:33:36,593 INFO L87 Difference]: Start difference. First operand 344 states and 354 transitions. Second operand has 140 states, 140 states have (on average 2.2642857142857142) internal successors, (317), 139 states have internal predecessors, (317), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:43,051 INFO L93 Difference]: Finished difference Result 412 states and 432 transitions.
[2022-01-31 17:33:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states.
[2022-01-31 17:33:43,052 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.2642857142857142) internal successors, (317), 139 states have internal predecessors, (317), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 339
[2022-01-31 17:33:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:43,052 INFO L225 Difference]: With dead ends: 412
[2022-01-31 17:33:43,053 INFO L226 Difference]: Without dead ends: 347
[2022-01-31 17:33:43,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9452 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=28773, Invalid=47679, Unknown=0, NotChecked=0, Total=76452
[2022-01-31 17:33:43,055 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 323 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:43,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 100 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:33:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states.
[2022-01-31 17:33:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 346.
[2022-01-31 17:33:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 340 states have (on average 1.0323529411764707) internal successors, (351), 340 states have internal predecessors, (351), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 356 transitions.
[2022-01-31 17:33:43,186 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 356 transitions. Word has length 339
[2022-01-31 17:33:43,186 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:43,186 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 356 transitions.
[2022-01-31 17:33:43,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.2642857142857142) internal successors, (317), 139 states have internal predecessors, (317), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 356 transitions.
[2022-01-31 17:33:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342
[2022-01-31 17:33:43,187 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:43,187 INFO L514 BasicCegarLoop]: trace histogram [137, 137, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:43,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139
[2022-01-31 17:33:43,187 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:43,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:43,187 INFO L85 PathProgramCache]: Analyzing trace with hash -708013315, now seen corresponding path program 137 times
[2022-01-31 17:33:43,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:43,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153668547]
[2022-01-31 17:33:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:43,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:43,188 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:43,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:43,203 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:48,517 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:48,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153668547]
[2022-01-31 17:33:48,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1153668547] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:48,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:48,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [141] imperfect sequences [] total 141
[2022-01-31 17:33:48,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964413398]
[2022-01-31 17:33:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:48,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states
[2022-01-31 17:33:48,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:48,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants.
[2022-01-31 17:33:48,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740
[2022-01-31 17:33:48,521 INFO L87 Difference]: Start difference. First operand 346 states and 356 transitions. Second operand has 141 states, 141 states have (on average 2.2624113475177303) internal successors, (319), 140 states have internal predecessors, (319), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:55,004 INFO L93 Difference]: Finished difference Result 414 states and 434 transitions.
[2022-01-31 17:33:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states.
[2022-01-31 17:33:55,004 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 2.2624113475177303) internal successors, (319), 140 states have internal predecessors, (319), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 341
[2022-01-31 17:33:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:55,005 INFO L225 Difference]: With dead ends: 414
[2022-01-31 17:33:55,005 INFO L226 Difference]: Without dead ends: 349
[2022-01-31 17:33:55,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9590 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=29190, Invalid=48372, Unknown=0, NotChecked=0, Total=77562
[2022-01-31 17:33:55,008 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 325 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:55,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 80 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:33:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states.
[2022-01-31 17:33:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 348.
[2022-01-31 17:33:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 342 states have (on average 1.0321637426900585) internal successors, (353), 342 states have internal predecessors, (353), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 358 transitions.
[2022-01-31 17:33:55,131 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 358 transitions. Word has length 341
[2022-01-31 17:33:55,131 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:55,131 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 358 transitions.
[2022-01-31 17:33:55,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 2.2624113475177303) internal successors, (319), 140 states have internal predecessors, (319), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:55,131 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 358 transitions.
[2022-01-31 17:33:55,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344
[2022-01-31 17:33:55,132 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:55,132 INFO L514 BasicCegarLoop]: trace histogram [138, 138, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:55,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140
[2022-01-31 17:33:55,132 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash 197808283, now seen corresponding path program 138 times
[2022-01-31 17:33:55,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:55,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915439370]
[2022-01-31 17:33:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:55,134 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:55,134 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:55,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:55,149 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:00,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:00,506 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:00,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915439370]
[2022-01-31 17:34:00,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1915439370] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:00,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:00,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [142] imperfect sequences [] total 142
[2022-01-31 17:34:00,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881055115]
[2022-01-31 17:34:00,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:00,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states
[2022-01-31 17:34:00,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:00,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants.
[2022-01-31 17:34:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022
[2022-01-31 17:34:00,509 INFO L87 Difference]: Start difference. First operand 348 states and 358 transitions. Second operand has 142 states, 142 states have (on average 2.26056338028169) internal successors, (321), 141 states have internal predecessors, (321), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:07,208 INFO L93 Difference]: Finished difference Result 416 states and 436 transitions.
[2022-01-31 17:34:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states.
[2022-01-31 17:34:07,209 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 2.26056338028169) internal successors, (321), 141 states have internal predecessors, (321), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 343
[2022-01-31 17:34:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:07,209 INFO L225 Difference]: With dead ends: 416
[2022-01-31 17:34:07,209 INFO L226 Difference]: Without dead ends: 351
[2022-01-31 17:34:07,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9729 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=29610, Invalid=49070, Unknown=0, NotChecked=0, Total=78680
[2022-01-31 17:34:07,212 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 327 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:07,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 75 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:34:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states.
[2022-01-31 17:34:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350.
[2022-01-31 17:34:07,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 344 states have (on average 1.0319767441860466) internal successors, (355), 344 states have internal predecessors, (355), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 360 transitions.
[2022-01-31 17:34:07,335 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 360 transitions. Word has length 343
[2022-01-31 17:34:07,335 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:07,336 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 360 transitions.
[2022-01-31 17:34:07,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 2.26056338028169) internal successors, (321), 141 states have internal predecessors, (321), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 360 transitions.
[2022-01-31 17:34:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346
[2022-01-31 17:34:07,336 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:07,337 INFO L514 BasicCegarLoop]: trace histogram [139, 139, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:07,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141
[2022-01-31 17:34:07,337 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:07,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:07,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1185997127, now seen corresponding path program 139 times
[2022-01-31 17:34:07,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:07,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714809498]
[2022-01-31 17:34:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:07,338 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:07,338 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:07,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:07,353 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:12,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:12,866 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:12,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714809498]
[2022-01-31 17:34:12,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [714809498] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:12,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:12,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [143] imperfect sequences [] total 143
[2022-01-31 17:34:12,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709231944]
[2022-01-31 17:34:12,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:12,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states
[2022-01-31 17:34:12,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants.
[2022-01-31 17:34:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306
[2022-01-31 17:34:12,868 INFO L87 Difference]: Start difference. First operand 350 states and 360 transitions. Second operand has 143 states, 143 states have (on average 2.2587412587412588) internal successors, (323), 142 states have internal predecessors, (323), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:19,572 INFO L93 Difference]: Finished difference Result 418 states and 438 transitions.
[2022-01-31 17:34:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states.
[2022-01-31 17:34:19,573 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.2587412587412588) internal successors, (323), 142 states have internal predecessors, (323), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 345
[2022-01-31 17:34:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:19,573 INFO L225 Difference]: With dead ends: 418
[2022-01-31 17:34:19,573 INFO L226 Difference]: Without dead ends: 353
[2022-01-31 17:34:19,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9869 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806
[2022-01-31 17:34:19,577 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 329 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:19,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 80 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:34:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states.
[2022-01-31 17:34:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 352.
[2022-01-31 17:34:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 346 states have (on average 1.0317919075144508) internal successors, (357), 346 states have internal predecessors, (357), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 362 transitions.
[2022-01-31 17:34:19,707 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 362 transitions. Word has length 345
[2022-01-31 17:34:19,707 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:19,707 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 362 transitions.
[2022-01-31 17:34:19,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.2587412587412588) internal successors, (323), 142 states have internal predecessors, (323), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 362 transitions.
[2022-01-31 17:34:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348
[2022-01-31 17:34:19,708 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:19,708 INFO L514 BasicCegarLoop]: trace histogram [140, 140, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:19,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142
[2022-01-31 17:34:19,709 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:19,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash 416865623, now seen corresponding path program 140 times
[2022-01-31 17:34:19,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:19,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922681625]
[2022-01-31 17:34:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:19,710 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:19,710 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:19,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:19,725 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:25,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:25,348 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:25,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922681625]
[2022-01-31 17:34:25,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1922681625] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:25,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:25,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [144] imperfect sequences [] total 144
[2022-01-31 17:34:25,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684402757]
[2022-01-31 17:34:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:25,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states
[2022-01-31 17:34:25,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants.
[2022-01-31 17:34:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592
[2022-01-31 17:34:25,351 INFO L87 Difference]: Start difference. First operand 352 states and 362 transitions. Second operand has 144 states, 144 states have (on average 2.2569444444444446) internal successors, (325), 143 states have internal predecessors, (325), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:32,162 INFO L93 Difference]: Finished difference Result 420 states and 440 transitions.
[2022-01-31 17:34:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states.
[2022-01-31 17:34:32,162 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 2.2569444444444446) internal successors, (325), 143 states have internal predecessors, (325), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 347
[2022-01-31 17:34:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:32,163 INFO L225 Difference]: With dead ends: 420
[2022-01-31 17:34:32,163 INFO L226 Difference]: Without dead ends: 355
[2022-01-31 17:34:32,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10010 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=30459, Invalid=50481, Unknown=0, NotChecked=0, Total=80940
[2022-01-31 17:34:32,166 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 331 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:32,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 90 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:34:32,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states.
[2022-01-31 17:34:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354.
[2022-01-31 17:34:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 348 states have (on average 1.0316091954022988) internal successors, (359), 348 states have internal predecessors, (359), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 364 transitions.
[2022-01-31 17:34:32,292 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 364 transitions. Word has length 347
[2022-01-31 17:34:32,292 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:32,292 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 364 transitions.
[2022-01-31 17:34:32,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 2.2569444444444446) internal successors, (325), 143 states have internal predecessors, (325), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:32,292 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 364 transitions.
[2022-01-31 17:34:32,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350
[2022-01-31 17:34:32,293 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:32,293 INFO L514 BasicCegarLoop]: trace histogram [141, 141, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:32,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143
[2022-01-31 17:34:32,293 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:32,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:32,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1125290891, now seen corresponding path program 141 times
[2022-01-31 17:34:32,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:32,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667932774]
[2022-01-31 17:34:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:32,294 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:32,294 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:32,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:32,322 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:37,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:37,992 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:37,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667932774]
[2022-01-31 17:34:37,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [667932774] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:37,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:37,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [145] imperfect sequences [] total 145
[2022-01-31 17:34:37,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352615825]
[2022-01-31 17:34:37,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:37,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states
[2022-01-31 17:34:37,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:37,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants.
[2022-01-31 17:34:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880
[2022-01-31 17:34:37,996 INFO L87 Difference]: Start difference. First operand 354 states and 364 transitions. Second operand has 145 states, 145 states have (on average 2.2551724137931033) internal successors, (327), 144 states have internal predecessors, (327), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:44,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:44,825 INFO L93 Difference]: Finished difference Result 422 states and 442 transitions.
[2022-01-31 17:34:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states.
[2022-01-31 17:34:44,825 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 2.2551724137931033) internal successors, (327), 144 states have internal predecessors, (327), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 349
[2022-01-31 17:34:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:44,826 INFO L225 Difference]: With dead ends: 422
[2022-01-31 17:34:44,826 INFO L226 Difference]: Without dead ends: 357
[2022-01-31 17:34:44,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10152 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=30888, Invalid=51194, Unknown=0, NotChecked=0, Total=82082
[2022-01-31 17:34:44,829 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 333 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:44,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 80 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:34:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states.
[2022-01-31 17:34:44,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 356.
[2022-01-31 17:34:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 350 states have (on average 1.0314285714285714) internal successors, (361), 350 states have internal predecessors, (361), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 366 transitions.
[2022-01-31 17:34:44,957 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 366 transitions. Word has length 349
[2022-01-31 17:34:44,957 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:44,957 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 366 transitions.
[2022-01-31 17:34:44,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 2.2551724137931033) internal successors, (327), 144 states have internal predecessors, (327), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 366 transitions.
[2022-01-31 17:34:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352
[2022-01-31 17:34:44,958 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:44,958 INFO L514 BasicCegarLoop]: trace histogram [142, 142, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:44,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144
[2022-01-31 17:34:44,958 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:44,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1373983725, now seen corresponding path program 142 times
[2022-01-31 17:34:44,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:44,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85946149]
[2022-01-31 17:34:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:44,960 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:44,960 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:44,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:44,975 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:50,672 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:50,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85946149]
[2022-01-31 17:34:50,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [85946149] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:50,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:50,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [146] imperfect sequences [] total 146
[2022-01-31 17:34:50,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018667637]
[2022-01-31 17:34:50,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:50,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 146 states
[2022-01-31 17:34:50,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:50,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants.
[2022-01-31 17:34:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170
[2022-01-31 17:34:50,676 INFO L87 Difference]: Start difference. First operand 356 states and 366 transitions. Second operand has 146 states, 146 states have (on average 2.2534246575342465) internal successors, (329), 145 states have internal predecessors, (329), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:57,726 INFO L93 Difference]: Finished difference Result 424 states and 444 transitions.
[2022-01-31 17:34:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states.
[2022-01-31 17:34:57,727 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 2.2534246575342465) internal successors, (329), 145 states have internal predecessors, (329), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 351
[2022-01-31 17:34:57,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:57,727 INFO L225 Difference]: With dead ends: 424
[2022-01-31 17:34:57,727 INFO L226 Difference]: Without dead ends: 359
[2022-01-31 17:34:57,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10295 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=31320, Invalid=51912, Unknown=0, NotChecked=0, Total=83232
[2022-01-31 17:34:57,731 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 335 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:57,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 80 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:34:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states.
[2022-01-31 17:34:57,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 358.
[2022-01-31 17:34:57,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 352 states have (on average 1.03125) internal successors, (363), 352 states have internal predecessors, (363), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 368 transitions.
[2022-01-31 17:34:57,864 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 368 transitions. Word has length 351
[2022-01-31 17:34:57,864 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:57,864 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 368 transitions.
[2022-01-31 17:34:57,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 2.2534246575342465) internal successors, (329), 145 states have internal predecessors, (329), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 368 transitions.
[2022-01-31 17:34:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354
[2022-01-31 17:34:57,865 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:57,865 INFO L514 BasicCegarLoop]: trace histogram [143, 143, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:57,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145
[2022-01-31 17:34:57,865 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:57,866 INFO L85 PathProgramCache]: Analyzing trace with hash 150371377, now seen corresponding path program 143 times
[2022-01-31 17:34:57,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:57,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146146674]
[2022-01-31 17:34:57,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:57,867 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:57,867 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:57,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:57,882 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:35:03,666 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:03,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146146674]
[2022-01-31 17:35:03,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1146146674] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:03,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:03,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [147] imperfect sequences [] total 147
[2022-01-31 17:35:03,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384299981]
[2022-01-31 17:35:03,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:03,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states
[2022-01-31 17:35:03,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants.
[2022-01-31 17:35:03,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462
[2022-01-31 17:35:03,669 INFO L87 Difference]: Start difference. First operand 358 states and 368 transitions. Second operand has 147 states, 147 states have (on average 2.251700680272109) internal successors, (331), 146 states have internal predecessors, (331), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:10,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:35:10,827 INFO L93 Difference]: Finished difference Result 426 states and 446 transitions.
[2022-01-31 17:35:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states.
[2022-01-31 17:35:10,827 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 2.251700680272109) internal successors, (331), 146 states have internal predecessors, (331), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 353
[2022-01-31 17:35:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:35:10,828 INFO L225 Difference]: With dead ends: 426
[2022-01-31 17:35:10,828 INFO L226 Difference]: Without dead ends: 361
[2022-01-31 17:35:10,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10439 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390
[2022-01-31 17:35:10,831 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 337 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 17:35:10,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 105 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 17:35:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states.
[2022-01-31 17:35:10,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 360.
[2022-01-31 17:35:10,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 354 states have (on average 1.0310734463276836) internal successors, (365), 354 states have internal predecessors, (365), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:35:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 370 transitions.
[2022-01-31 17:35:10,966 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 370 transitions. Word has length 353
[2022-01-31 17:35:10,966 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:35:10,966 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 370 transitions.
[2022-01-31 17:35:10,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 2.251700680272109) internal successors, (331), 146 states have internal predecessors, (331), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 370 transitions.
[2022-01-31 17:35:10,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356
[2022-01-31 17:35:10,967 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:35:10,967 INFO L514 BasicCegarLoop]: trace histogram [144, 144, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:35:10,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146
[2022-01-31 17:35:10,967 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:35:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:35:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash 471776463, now seen corresponding path program 144 times
[2022-01-31 17:35:10,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:35:10,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102649859]
[2022-01-31 17:35:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:35:10,969 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:35:10,969 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:35:10,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:35:10,985 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:35:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:16,893 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 17:35:16,893 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:16,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102649859]
[2022-01-31 17:35:16,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1102649859] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:16,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:16,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [148] imperfect sequences [] total 148
[2022-01-31 17:35:16,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965455745]
[2022-01-31 17:35:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:16,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states
[2022-01-31 17:35:16,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:16,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants.
[2022-01-31 17:35:16,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10733, Invalid=11023, Unknown=0, NotChecked=0, Total=21756
[2022-01-31 17:35:16,897 INFO L87 Difference]: Start difference. First operand 360 states and 370 transitions. Second operand has 148 states, 148 states have (on average 2.25) internal successors, (333), 147 states have internal predecessors, (333), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)