/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:08:46,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:08:46,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:08:46,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:08:46,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:08:46,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:08:46,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:08:46,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:08:46,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:08:46,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:08:46,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:08:46,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:08:46,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:08:46,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:08:46,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:08:46,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:08:46,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:08:46,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:08:46,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:08:46,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:08:46,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:08:46,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:08:46,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:08:46,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:08:46,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 06:08:46,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:08:46,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:08:46,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:08:46,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:08:46,946 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:08:46,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:08:46,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:08:46,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:08:46,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:08:46,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:08:46,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:08:46,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:08:46,948 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:08:46,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:08:46,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:08:46,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:08:46,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:08:46,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:08:46,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:08:46,950 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:08:46,950 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:08:46,950 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:08:46,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:08:46,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:08:46,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:08:46,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:08:46,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:08:46,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:08:46,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:08:46,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:08:46,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:08:46,952 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:08:46,952 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:08:46,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:08:46,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:08:46,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:08:46,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:08:46,953 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:08:47,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:08:47,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:08:47,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:08:47,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:08:47,149 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:08:47,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2022-01-10 06:08:47,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f26d98be/c7d8d79b564048c98e81288ca35857a4/FLAG31dd19460 [2022-01-10 06:08:47,588 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:08:47,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2022-01-10 06:08:47,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f26d98be/c7d8d79b564048c98e81288ca35857a4/FLAG31dd19460 [2022-01-10 06:08:47,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f26d98be/c7d8d79b564048c98e81288ca35857a4 [2022-01-10 06:08:47,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:08:47,610 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:08:47,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:08:47,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:08:47,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:08:47,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:47,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15dddcaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47, skipping insertion in model container [2022-01-10 06:08:47,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:47,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:08:47,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:08:47,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i[24458,24471] [2022-01-10 06:08:47,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:08:47,900 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:08:47,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i[24458,24471] [2022-01-10 06:08:47,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:08:47,952 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:08:47,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47 WrapperNode [2022-01-10 06:08:47,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:08:47,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:08:47,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:08:47,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:08:47,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:47,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:47,989 INFO L137 Inliner]: procedures = 130, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 138 [2022-01-10 06:08:47,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:08:47,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:08:47,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:08:47,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:08:47,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:47,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:47,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:47,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:48,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:48,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:48,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:48,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:08:48,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:08:48,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:08:48,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:08:48,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (1/1) ... [2022-01-10 06:08:48,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:08:48,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:08:48,038 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) [2022-01-10 06:08:48,043 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 [2022-01-10 06:08:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 06:08:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-01-10 06:08:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-01-10 06:08:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 06:08:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:08:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 06:08:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 06:08:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 06:08:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 06:08:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 06:08:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 06:08:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:08:48,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:08:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:08:48,143 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:08:48,145 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:08:48,394 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:08:48,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:08:48,398 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-10 06:08:48,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:08:48 BoogieIcfgContainer [2022-01-10 06:08:48,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:08:48,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:08:48,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:08:48,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:08:48,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:08:47" (1/3) ... [2022-01-10 06:08:48,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d77df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:08:48, skipping insertion in model container [2022-01-10 06:08:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:08:47" (2/3) ... [2022-01-10 06:08:48,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d77df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:08:48, skipping insertion in model container [2022-01-10 06:08:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:08:48" (3/3) ... [2022-01-10 06:08:48,405 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal.i [2022-01-10 06:08:48,408 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:08:48,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:08:48,439 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:08:48,445 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=FAST_UPR [2022-01-10 06:08:48,445 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:08:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:08:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 06:08:48,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:08:48,462 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:08:48,463 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:08:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:08:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash -483023916, now seen corresponding path program 1 times [2022-01-10 06:08:48,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:08:48,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936967040] [2022-01-10 06:08:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:08:48,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:08:48,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:08:48,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:08:48,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:08:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:08:48,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:08:48,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:08:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:08:48,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:08:48,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:08:48,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936967040] [2022-01-10 06:08:48,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936967040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:08:48,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:08:48,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:08:48,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638726673] [2022-01-10 06:08:48,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:08:48,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:08:48,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:08:48,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:08:48,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:08:48,755 INFO L87 Difference]: Start difference. First operand has 36 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 06:08:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:08:48,768 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2022-01-10 06:08:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:08:48,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-01-10 06:08:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:08:48,775 INFO L225 Difference]: With dead ends: 65 [2022-01-10 06:08:48,775 INFO L226 Difference]: Without dead ends: 28 [2022-01-10 06:08:48,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:08:48,779 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:08:48,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:08:48,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-10 06:08:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-10 06:08:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:08:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-01-10 06:08:48,803 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 24 [2022-01-10 06:08:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:08:48,804 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-01-10 06:08:48,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 06:08:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-01-10 06:08:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 06:08:48,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:08:48,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:08:48,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:08:49,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:08:49,011 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:08:49,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:08:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash -938400178, now seen corresponding path program 1 times [2022-01-10 06:08:49,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:08:49,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858667912] [2022-01-10 06:08:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:08:49,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:08:49,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:08:49,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:08:49,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:08:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:08:49,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:08:49,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:08:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:08:49,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:08:49,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:08:49,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858667912] [2022-01-10 06:08:49,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858667912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:08:49,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:08:49,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:08:49,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655894795] [2022-01-10 06:08:49,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:08:49,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:08:49,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:08:49,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:08:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:08:49,214 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 06:08:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:08:49,228 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-01-10 06:08:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:08:49,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-01-10 06:08:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:08:49,230 INFO L225 Difference]: With dead ends: 52 [2022-01-10 06:08:49,230 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 06:08:49,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:08:49,231 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:08:49,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 61 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:08:49,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 06:08:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-01-10 06:08:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:08:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-01-10 06:08:49,236 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 24 [2022-01-10 06:08:49,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:08:49,236 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-01-10 06:08:49,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 06:08:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-01-10 06:08:49,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 06:08:49,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:08:49,237 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:08:49,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:08:49,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:08:49,448 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:08:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:08:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 436872902, now seen corresponding path program 1 times [2022-01-10 06:08:49,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:08:49,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920542969] [2022-01-10 06:08:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:08:49,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:08:49,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:08:49,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:08:49,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:08:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:08:49,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 06:08:49,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:08:49,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-01-10 06:08:50,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:08:50,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-01-10 06:08:50,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-01-10 06:08:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 06:08:50,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:08:50,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:08:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920542969] [2022-01-10 06:08:50,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920542969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:08:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [226635663] [2022-01-10 06:08:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:08:50,413 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:08:50,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:08:50,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:08:50,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-01-10 06:08:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:08:50,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 06:08:50,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:08:51,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-01-10 06:08:51,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:08:51,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-01-10 06:08:51,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-01-10 06:08:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 06:08:51,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:08:51,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [226635663] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:08:51,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:08:51,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2022-01-10 06:08:51,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423634664] [2022-01-10 06:08:51,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:08:51,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 06:08:51,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:08:51,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 06:08:51,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=418, Unknown=8, NotChecked=0, Total=506 [2022-01-10 06:08:51,417 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-10 06:08:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:08:51,873 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-01-10 06:08:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 06:08:51,874 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 32 [2022-01-10 06:08:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:08:51,876 INFO L225 Difference]: With dead ends: 38 [2022-01-10 06:08:51,876 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 06:08:51,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=576, Unknown=11, NotChecked=0, Total=702 [2022-01-10 06:08:51,877 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:08:51,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 133 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2022-01-10 06:08:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 06:08:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-01-10 06:08:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:08:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-01-10 06:08:51,881 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2022-01-10 06:08:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:08:51,881 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-01-10 06:08:51,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-10 06:08:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-01-10 06:08:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 06:08:51,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:08:51,882 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:08:51,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2022-01-10 06:08:52,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:08:52,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:08:52,283 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:08:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:08:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1205420011, now seen corresponding path program 1 times [2022-01-10 06:08:52,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:08:52,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653188008] [2022-01-10 06:08:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:08:52,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:08:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:08:52,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:08:52,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:08:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:08:52,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-10 06:08:52,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:08:52,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 06:08:52,829 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:08:52,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2022-01-10 06:08:52,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 06:08:53,047 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 06:08:53,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2022-01-10 06:08:53,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-01-10 06:08:53,243 INFO L353 Elim1Store]: treesize reduction 3, result has 81.3 percent of original size [2022-01-10 06:08:53,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 34 [2022-01-10 06:08:53,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 06:08:53,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-01-10 06:08:53,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:08:53,504 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 06:08:53,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 54 [2022-01-10 06:08:53,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:08:53,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 47 [2022-01-10 06:08:53,594 INFO L353 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-01-10 06:08:53,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 37 [2022-01-10 06:08:53,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2022-01-10 06:08:53,926 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-01-10 06:08:53,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 31 [2022-01-10 06:08:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:08:54,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:08:54,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:08:54,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653188008] [2022-01-10 06:08:54,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653188008] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:08:54,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1088492811] [2022-01-10 06:08:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:08:54,426 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:08:54,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:08:54,427 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:08:54,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-01-10 06:08:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:08:54,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-10 06:08:54,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:08:54,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 06:08:55,175 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:08:55,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2022-01-10 06:08:55,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 06:08:55,443 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 06:08:55,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-01-10 06:08:55,664 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:08:55,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 26 [2022-01-10 06:08:55,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-01-10 06:08:55,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 06:08:55,890 INFO L353 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-01-10 06:08:55,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 51 [2022-01-10 06:08:55,915 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-10 06:08:55,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-01-10 06:08:55,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-01-10 06:08:55,980 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 06:08:55,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-01-10 06:08:56,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 06:08:56,692 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:08:56,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 26 [2022-01-10 06:08:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:08:56,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:08:57,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1088492811] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:08:57,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:08:57,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 34 [2022-01-10 06:08:57,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152583457] [2022-01-10 06:08:57,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:08:57,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-10 06:08:57,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:08:57,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-10 06:08:57,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1179, Unknown=11, NotChecked=0, Total=1332 [2022-01-10 06:08:57,082 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 34 states, 30 states have (on average 1.5) internal successors, (45), 26 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 06:08:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:08:57,844 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2022-01-10 06:08:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:08:57,845 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.5) internal successors, (45), 26 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2022-01-10 06:08:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:08:57,845 INFO L225 Difference]: With dead ends: 54 [2022-01-10 06:08:57,845 INFO L226 Difference]: Without dead ends: 45 [2022-01-10 06:08:57,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=183, Invalid=1445, Unknown=12, NotChecked=0, Total=1640 [2022-01-10 06:08:57,847 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:08:57,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 329 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 172 Invalid, 0 Unknown, 155 Unchecked, 0.4s Time] [2022-01-10 06:08:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-10 06:08:57,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-01-10 06:08:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 06:08:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2022-01-10 06:08:57,853 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 35 [2022-01-10 06:08:57,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:08:57,854 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2022-01-10 06:08:57,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.5) internal successors, (45), 26 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 06:08:57,854 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2022-01-10 06:08:57,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 06:08:57,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:08:57,855 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:08:57,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:08:58,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 06:08:58,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:08:58,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:08:58,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:08:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash 790772624, now seen corresponding path program 1 times [2022-01-10 06:08:58,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:08:58,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255440589] [2022-01-10 06:08:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:08:58,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:08:58,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:08:58,261 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:08:58,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:08:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:08:58,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 87 conjunts are in the unsatisfiable core [2022-01-10 06:08:58,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:08:58,590 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 06:08:58,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 06:08:58,698 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:08:58,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 24 [2022-01-10 06:08:58,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-01-10 06:08:58,891 INFO L353 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-01-10 06:08:58,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 42 [2022-01-10 06:08:58,993 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 06:08:59,151 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 06:08:59,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2022-01-10 06:08:59,392 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-10 06:08:59,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 29 [2022-01-10 06:08:59,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-01-10 06:08:59,568 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 06:08:59,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:08:59,728 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 06:08:59,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 70 [2022-01-10 06:08:59,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:08:59,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2022-01-10 06:08:59,787 INFO L353 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2022-01-10 06:08:59,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 48 [2022-01-10 06:09:01,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2022-01-10 06:09:01,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:01,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:01,211 INFO L353 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2022-01-10 06:09:01,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 169 treesize of output 141 [2022-01-10 06:09:01,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 115 [2022-01-10 06:09:01,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:01,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 70 [2022-01-10 06:09:01,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:01,330 INFO L353 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-01-10 06:09:01,330 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 83 [2022-01-10 06:09:01,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:01,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-10 06:09:01,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 37 [2022-01-10 06:09:01,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 06:09:01,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 06:09:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:09:01,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:09:02,027 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_542 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_546 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_545 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_538 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_540 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_541 (_ BitVec 32)) (v_ArrVal_535 (Array (_ BitVec 64) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| v_ArrVal_541)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| v_ArrVal_535) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base| v_ArrVal_542) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_538) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_545) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base| v_ArrVal_546) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))))) (store .cse0 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse0 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|))) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base| v_ArrVal_540) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (_ bv8 64))))) is different from false [2022-01-10 06:09:02,218 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_542 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_546 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_545 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_538 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_540 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_541 (_ BitVec 32)) (v_ArrVal_535 (Array (_ BitVec 64) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| v_ArrVal_541)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| v_ArrVal_535) .cse0 v_ArrVal_542) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_538) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_545) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) .cse0 v_ArrVal_546) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (select (select (store (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))))) (store .cse1 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse1 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|))) .cse0 v_ArrVal_540) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (_ bv8 64)))))) is different from false [2022-01-10 06:09:02,365 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_542 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_546 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_545 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_538 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_540 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_541 (_ BitVec 32)) (v_ArrVal_535 (Array (_ BitVec 64) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) .cse2))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| v_ArrVal_541)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| v_ArrVal_535) .cse0 v_ArrVal_542) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_538) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_545) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) .cse0 v_ArrVal_546) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 64) (select (select (store (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| .cse2)))) (store .cse1 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse1 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|))) .cse0 v_ArrVal_540) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false [2022-01-10 06:09:02,420 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_542 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_546 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_545 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_538 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_540 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_541 (_ BitVec 32)) (v_ArrVal_535 (Array (_ BitVec 64) (_ BitVec 32)))) (= (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) .cse2))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|) |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset| v_ArrVal_541)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| v_ArrVal_535) .cse0 v_ArrVal_542) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| v_ArrVal_538) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| v_ArrVal_545) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|)) .cse0 v_ArrVal_546) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 64) (select (select (store (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|) |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset| .cse2)))) (store .cse1 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse1 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset|))) .cse0 v_ArrVal_540) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2022-01-10 06:09:02,720 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:09:02,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 151 treesize of output 157 [2022-01-10 06:09:03,000 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:09:03,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 694 treesize of output 697 [2022-01-10 06:09:03,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 576 treesize of output 444 [2022-01-10 06:09:03,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 188 [2022-01-10 06:09:15,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:09:15,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255440589] [2022-01-10 06:09:15,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255440589] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:09:15,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1852847926] [2022-01-10 06:09:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:09:15,779 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:09:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:09:15,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:09:15,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-01-10 06:09:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:09:16,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 79 conjunts are in the unsatisfiable core [2022-01-10 06:09:16,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:09:18,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 06:09:21,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-01-10 06:09:22,413 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:09:22,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2022-01-10 06:09:22,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 06:09:24,706 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 06:09:24,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2022-01-10 06:09:25,498 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:09:25,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 29 [2022-01-10 06:09:25,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-01-10 06:09:25,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 06:09:25,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 06:09:26,140 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 06:09:26,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-01-10 06:09:26,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 06:09:26,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:26,237 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 06:09:26,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 52 [2022-01-10 06:09:26,314 INFO L353 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-01-10 06:09:26,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2022-01-10 06:09:29,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2022-01-10 06:09:29,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:30,022 INFO L353 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2022-01-10 06:09:30,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 104 [2022-01-10 06:09:30,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:30,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:30,224 INFO L353 Elim1Store]: treesize reduction 28, result has 33.3 percent of original size [2022-01-10 06:09:30,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 52 [2022-01-10 06:09:30,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 50 [2022-01-10 06:09:30,263 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-01-10 06:09:30,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:30,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:30,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2022-01-10 06:09:30,986 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:09:30,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 33 [2022-01-10 06:09:30,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 06:09:31,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 06:09:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:09:31,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:09:31,283 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_652 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_657 (_ BitVec 32)) (v_ArrVal_650 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_660 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_654 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_653 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_651 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_662 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| v_ArrVal_657)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| v_ArrVal_650) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base| v_ArrVal_652) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_656) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_660) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base| v_ArrVal_654) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 64) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_662) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_651) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|)) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base| v_ArrVal_653) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-01-10 06:09:31,437 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_652 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_657 (_ BitVec 32)) (v_ArrVal_650 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_660 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_654 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_653 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_651 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_662 (Array (_ BitVec 64) (_ BitVec 64)))) (= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| v_ArrVal_657)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| v_ArrVal_650) .cse0 v_ArrVal_652) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_656) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_660) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) .cse0 v_ArrVal_654) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 64) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_662) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_651) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|)) .cse0 v_ArrVal_653) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2022-01-10 06:09:31,544 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_652 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_657 (_ BitVec 32)) (v_ArrVal_650 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_660 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_654 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_653 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_651 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_662 (Array (_ BitVec 64) (_ BitVec 64)))) (= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| v_ArrVal_657)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| v_ArrVal_650) .cse0 v_ArrVal_652) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_656) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_660) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) .cse0 v_ArrVal_654) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 64) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_662) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| v_ArrVal_651) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|)) .cse0 v_ArrVal_653) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2022-01-10 06:09:31,588 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_652 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_657 (_ BitVec 32)) (v_ArrVal_650 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_660 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_654 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_653 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_651 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_662 (Array (_ BitVec 64) (_ BitVec 64)))) (= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|) |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset| v_ArrVal_657)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| v_ArrVal_650) .cse0 v_ArrVal_652) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| v_ArrVal_656) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| v_ArrVal_660) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|)) .cse0 v_ArrVal_654) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 64) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| v_ArrVal_662) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| v_ArrVal_651) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset|)) .cse0 v_ArrVal_653) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2022-01-10 06:09:32,089 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:09:32,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 137 [2022-01-10 06:09:32,422 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:09:32,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 614 treesize of output 617 [2022-01-10 06:09:32,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 516 treesize of output 424 [2022-01-10 06:09:32,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 188 [2022-01-10 06:09:39,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1852847926] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:09:39,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:09:39,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 41 [2022-01-10 06:09:39,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406118509] [2022-01-10 06:09:39,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:09:39,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-10 06:09:39,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:09:39,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-10 06:09:39,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1919, Unknown=13, NotChecked=760, Total=2862 [2022-01-10 06:09:39,811 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 30 states have internal predecessors, (51), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 06:09:48,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:09:48,662 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-01-10 06:09:48,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 06:09:48,664 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 30 states have internal predecessors, (51), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 37 [2022-01-10 06:09:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:09:48,665 INFO L225 Difference]: With dead ends: 54 [2022-01-10 06:09:48,665 INFO L226 Difference]: Without dead ends: 52 [2022-01-10 06:09:48,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=259, Invalid=2839, Unknown=14, NotChecked=920, Total=4032 [2022-01-10 06:09:48,667 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:09:48,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 264 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 225 Invalid, 0 Unknown, 119 Unchecked, 1.1s Time] [2022-01-10 06:09:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-10 06:09:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-01-10 06:09:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 06:09:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-01-10 06:09:48,676 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 37 [2022-01-10 06:09:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:09:48,676 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-01-10 06:09:48,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 30 states have internal predecessors, (51), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 06:09:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-01-10 06:09:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 06:09:48,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:09:48,677 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:09:48,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:09:48,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:09:49,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:09:49,083 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:09:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:09:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash -718486453, now seen corresponding path program 2 times [2022-01-10 06:09:49,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:09:49,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112583276] [2022-01-10 06:09:49,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:09:49,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:09:49,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:09:49,085 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:09:49,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:09:49,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:09:49,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:09:49,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-10 06:09:49,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:09:49,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 06:09:50,408 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:09:50,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2022-01-10 06:09:50,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 06:09:50,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 06:09:50,997 INFO L353 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-01-10 06:09:50,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2022-01-10 06:09:51,008 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-01-10 06:09:51,546 INFO L353 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2022-01-10 06:09:51,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 54 [2022-01-10 06:09:51,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-01-10 06:09:51,611 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-01-10 06:09:51,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 10 [2022-01-10 06:09:52,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:52,337 INFO L353 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-01-10 06:09:52,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 98 treesize of output 84 [2022-01-10 06:09:52,442 INFO L353 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-01-10 06:09:52,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 33 [2022-01-10 06:09:52,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:09:52,491 INFO L353 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-01-10 06:09:52,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 66 [2022-01-10 06:09:54,106 INFO L353 Elim1Store]: treesize reduction 104, result has 16.1 percent of original size [2022-01-10 06:09:54,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 94 [2022-01-10 06:09:54,239 INFO L353 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2022-01-10 06:09:54,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 37 [2022-01-10 06:09:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:09:54,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:09:58,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:09:58,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112583276] [2022-01-10 06:09:58,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112583276] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:09:58,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [185603399] [2022-01-10 06:09:58,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:09:58,687 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:09:58,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:09:58,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:09:58,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-01-10 06:09:59,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:09:59,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:09:59,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 113 conjunts are in the unsatisfiable core [2022-01-10 06:09:59,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:09:59,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 06:10:01,030 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:10:01,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 24 [2022-01-10 06:10:01,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 06:10:01,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 06:10:01,868 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 06:10:01,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 46 [2022-01-10 06:10:01,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22