/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/dll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:07:17,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:07:17,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:07:17,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:07:17,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:07:17,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:07:17,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:07:17,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:07:17,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:07:17,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:07:17,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:07:17,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:07:17,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:07:17,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:07:17,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:07:17,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:07:17,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:07:17,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:07:17,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:07:17,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:07:17,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:07:17,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:07:17,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:07:17,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:07:17,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 06:07:17,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:07:17,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:07:17,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:07:17,122 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 06:07:17,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:07:17,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:07:17,147 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:07:17,147 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:07:17,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:07:17,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:07:17,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:07:17,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:07:17,148 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:07:17,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:07:17,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:07:17,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:07:17,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:07:17,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:07:17,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:07:17,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:07:17,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:07:17,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:07:17,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:07:17,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:07:17,352 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:07:17,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2022-01-10 06:07:17,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e2e94ea4/79bad41d3203459db4fb2c708dc55208/FLAGb8ecc2c4b [2022-01-10 06:07:17,752 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:07:17,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2022-01-10 06:07:17,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e2e94ea4/79bad41d3203459db4fb2c708dc55208/FLAGb8ecc2c4b [2022-01-10 06:07:18,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e2e94ea4/79bad41d3203459db4fb2c708dc55208 [2022-01-10 06:07:18,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:07:18,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:07:18,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:07:18,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:07:18,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:07:18,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce800ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18, skipping insertion in model container [2022-01-10 06:07:18,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:07:18,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:07:18,399 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/dll2c_prepend_equal.i[24640,24653] [2022-01-10 06:07:18,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:07:18,409 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:07:18,463 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/dll2c_prepend_equal.i[24640,24653] [2022-01-10 06:07:18,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:07:18,489 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:07:18,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18 WrapperNode [2022-01-10 06:07:18,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:07:18,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:07:18,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:07:18,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:07:18,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,537 INFO L137 Inliner]: procedures = 130, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 135 [2022-01-10 06:07:18,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:07:18,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:07:18,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:07:18,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:07:18,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:07:18,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:07:18,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:07:18,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:07:18,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (1/1) ... [2022-01-10 06:07:18,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:07:18,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:07:18,633 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 06:07:18,642 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 06:07:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 06:07:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-01-10 06:07:18,668 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-01-10 06:07:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 06:07:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:07:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 06:07:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 06:07:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 06:07:18,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 06:07:18,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 06:07:18,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 06:07:18,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:07:18,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:07:18,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:07:18,752 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:07:18,753 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:07:19,174 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:07:19,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:07:19,179 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 06:07:19,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:19 BoogieIcfgContainer [2022-01-10 06:07:19,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:07:19,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:07:19,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:07:19,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:07:19,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:07:18" (1/3) ... [2022-01-10 06:07:19,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad936b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:19, skipping insertion in model container [2022-01-10 06:07:19,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:18" (2/3) ... [2022-01-10 06:07:19,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad936b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:19, skipping insertion in model container [2022-01-10 06:07:19,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:19" (3/3) ... [2022-01-10 06:07:19,186 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_equal.i [2022-01-10 06:07:19,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:07:19,190 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:07:19,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:07:19,225 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 06:07:19,225 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:07:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 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 06:07:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 06:07:19,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:07:19,246 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 06:07:19,246 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:07:19,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:07:19,250 INFO L85 PathProgramCache]: Analyzing trace with hash 976010426, now seen corresponding path program 1 times [2022-01-10 06:07:19,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:07:19,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299153064] [2022-01-10 06:07:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:07:19,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:07:19,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:07:19,295 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 06:07:19,298 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 06:07:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:07:19,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:07:19,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:07:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:07:19,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:07:19,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:07:19,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299153064] [2022-01-10 06:07:19,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299153064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:07:19,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:07:19,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:07:19,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143988863] [2022-01-10 06:07:19,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:07:19,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:07:19,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:07:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:07:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:07:19,595 INFO L87 Difference]: Start difference. First operand has 35 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 06:07:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:07:19,612 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2022-01-10 06:07:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:07:19,614 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-01-10 06:07:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:07:19,618 INFO L225 Difference]: With dead ends: 61 [2022-01-10 06:07:19,618 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 06:07:19,621 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 06:07:19,624 INFO L933 BasicCegarLoop]: 44 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, 44 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 06:07:19,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:07:19,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 06:07:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-10 06:07:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 06:07:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-01-10 06:07:19,658 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 24 [2022-01-10 06:07:19,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:07:19,659 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-01-10 06:07:19,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 06:07:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-01-10 06:07:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 06:07:19,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:07:19,662 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 06:07:19,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 06:07:19,871 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 06:07:19,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:07:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:07:19,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1442307826, now seen corresponding path program 1 times [2022-01-10 06:07:19,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:07:19,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703270430] [2022-01-10 06:07:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:07:19,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:07:19,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:07:19,880 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 06:07:19,881 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 06:07:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:07:20,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:07:20,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:07:20,144 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 06:07:20,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:07:20,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:07:20,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703270430] [2022-01-10 06:07:20,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703270430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:07:20,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:07:20,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:07:20,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062661944] [2022-01-10 06:07:20,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:07:20,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:07:20,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:07:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:07:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:07:20,153 INFO L87 Difference]: Start difference. First operand 27 states and 33 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 06:07:20,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:07:20,172 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2022-01-10 06:07:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:07:20,173 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 06:07:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:07:20,174 INFO L225 Difference]: With dead ends: 50 [2022-01-10 06:07:20,175 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 06:07:20,178 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 06:07:20,180 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 59 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 06:07:20,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 59 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:07:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 06:07:20,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-01-10 06:07:20,191 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 06:07:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-01-10 06:07:20,191 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 24 [2022-01-10 06:07:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:07:20,192 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-01-10 06:07:20,192 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 06:07:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-01-10 06:07:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 06:07:20,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:07:20,193 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] [2022-01-10 06:07:20,204 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 06:07:20,401 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 06:07:20,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:07:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:07:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash 915772386, now seen corresponding path program 1 times [2022-01-10 06:07:20,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:07:20,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674970823] [2022-01-10 06:07:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:07:20,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:07:20,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:07:20,424 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 06:07:20,425 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 06:07:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:07:20,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 06:07:20,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:07:21,007 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 06:07:21,008 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-01-10 06:07:21,079 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 06:07:21,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:21,262 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 06:07:21,377 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 06:07:21,403 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 06:07:21,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:07:21,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:07:21,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674970823] [2022-01-10 06:07:21,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674970823] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:07:21,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [86893164] [2022-01-10 06:07:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:07:21,541 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:07:21,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:07:21,542 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 06:07:21,564 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 06:07:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:07:21,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 06:07:21,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:07:22,320 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 06:07:22,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:22,412 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 06:07:22,476 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 06:07:22,484 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 06:07:22,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:07:22,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [86893164] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:07:22,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:07:22,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2022-01-10 06:07:22,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343361949] [2022-01-10 06:07:22,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:07:22,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 06:07:22,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:07:22,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 06:07:22,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=502, Unknown=8, NotChecked=0, Total=600 [2022-01-10 06:07:22,590 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 18 states have internal predecessors, (38), 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 06:07:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:07:23,589 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2022-01-10 06:07:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 06:07:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 18 states have internal predecessors, (38), 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 34 [2022-01-10 06:07:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:07:23,591 INFO L225 Difference]: With dead ends: 37 [2022-01-10 06:07:23,592 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 06:07:23,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=720, Unknown=10, NotChecked=0, Total=870 [2022-01-10 06:07:23,593 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:07:23,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 148 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 43 Unchecked, 0.8s Time] [2022-01-10 06:07:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 06:07:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-10 06:07:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 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 06:07:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-01-10 06:07:23,597 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 34 [2022-01-10 06:07:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:07:23,597 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-01-10 06:07:23,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 18 states have internal predecessors, (38), 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 06:07:23,597 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-01-10 06:07:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 06:07:23,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:07:23,598 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] [2022-01-10 06:07:23,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:07:23,812 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 06:07:24,012 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 06:07:24,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:07:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:07:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash 917619428, now seen corresponding path program 1 times [2022-01-10 06:07:24,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:07:24,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335602937] [2022-01-10 06:07:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:07:24,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:07:24,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:07:24,015 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 06:07:24,015 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 06:07:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:07:24,876 WARN L261 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 200 conjunts are in the unsatisfiable core [2022-01-10 06:07:24,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:07:24,901 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 06:07:24,922 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 06:07:25,020 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:07:25,021 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 06:07:25,123 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 13 treesize of output 9 [2022-01-10 06:07:25,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:25,390 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:07:25,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 34 [2022-01-10 06:07:25,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:25,832 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 14 treesize of output 14 [2022-01-10 06:07:25,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-01-10 06:07:26,153 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-10 06:07:26,153 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 61 treesize of output 28 [2022-01-10 06:07:26,166 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 06:07:26,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:26,183 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 21 treesize of output 15 [2022-01-10 06:07:26,344 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 06:07:26,503 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 06:07:26,503 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 06:07:26,511 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 06:07:26,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:26,559 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 06:07:26,560 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 67 treesize of output 57 [2022-01-10 06:07:26,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:26,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:26,625 INFO L353 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-01-10 06:07:26,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 38 [2022-01-10 06:07:27,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:27,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:27,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:27,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:28,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:28,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:28,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:28,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:28,294 INFO L244 Elim1Store]: Index analysis took 423 ms [2022-01-10 06:07:28,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-01-10 06:07:28,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:28,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:28,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 06:07:29,159 INFO L353 Elim1Store]: treesize reduction 193, result has 13.8 percent of original size [2022-01-10 06:07:29,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 452 treesize of output 223 [2022-01-10 06:07:29,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:29,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:29,290 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 80 [2022-01-10 06:07:29,408 INFO L353 Elim1Store]: treesize reduction 82, result has 16.3 percent of original size [2022-01-10 06:07:29,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 166 treesize of output 130 [2022-01-10 06:07:29,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 37 [2022-01-10 06:07:29,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:29,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:29,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 68 [2022-01-10 06:07:29,531 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 36 treesize of output 30 [2022-01-10 06:07:29,564 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 44 treesize of output 34 [2022-01-10 06:07:30,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:30,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 64 treesize of output 28 [2022-01-10 06:07:30,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:30,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-01-10 06:07:30,309 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 15 treesize of output 7 [2022-01-10 06:07:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 06:07:30,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:07:31,008 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_585 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_575 (Array (_ BitVec 64) (_ BitVec 32))) (|v_ULTIMATE.start_dll_circular_prepend_~last~1#1.offset_3| (_ BitVec 64)) (v_ArrVal_697 (_ BitVec 32)) (v_ArrVal_695 (_ BitVec 32)) (v_ArrVal_580 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_674 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_651 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse13 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base|))) (let ((.cse12 (select .cse13 |c_ULTIMATE.start_dll_circular_prepend_~head#1.offset|)) (.cse8 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base|))) (let ((.cse2 (select .cse8 |c_ULTIMATE.start_dll_circular_prepend_~head#1.offset|)) (.cse6 (bvadd (_ bv8 64) .cse12))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| .cse2) .cse6))) (select (select (let ((.cse0 (store (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base| v_ArrVal_575))) (store .cse1 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.offset| v_ArrVal_695))) .cse2 v_ArrVal_585) .cse3 v_ArrVal_580))) (store .cse0 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.offset|) v_ArrVal_697))) (select (select (store (let ((.cse4 (let ((.cse5 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base| (store .cse8 |c_ULTIMATE.start_dll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base|)))) (store .cse7 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.offset| .cse2))))) (store .cse5 .cse2 (store (select .cse5 .cse2) .cse6 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base|))))) (store .cse4 .cse3 (store (select .cse4 .cse3) |v_ULTIMATE.start_dll_circular_prepend_~last~1#1.offset_3| |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base|))) |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base| v_ArrVal_674) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (select (select (store (let ((.cse9 (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base| (store .cse13 |c_ULTIMATE.start_dll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.offset|)))) (store .cse11 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.offset| .cse12))))) (store .cse10 .cse2 (store (select .cse10 .cse2) .cse6 |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.offset|))))) (store .cse9 .cse3 (store (select .cse9 .cse3) |v_ULTIMATE.start_dll_circular_prepend_~last~1#1.offset_3| |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.offset|))) |c_ULTIMATE.start_dll_circular_prepend_~new_head~1#1.base| v_ArrVal_651) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (_ bv16 64))))))))) is different from false [2022-01-10 06:07:31,280 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_585 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_575 (Array (_ BitVec 64) (_ BitVec 32))) (|v_ULTIMATE.start_dll_circular_prepend_~last~1#1.offset_3| (_ BitVec 64)) (v_ArrVal_697 (_ BitVec 32)) (v_ArrVal_695 (_ BitVec 32)) (v_ArrVal_580 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_674 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_651 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse13 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base|))) (let ((.cse12 (select .cse13 |c_ULTIMATE.start_dll_circular_prepend_~head#1.offset|)) (.cse8 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base|))) (let ((.cse2 (select .cse8 |c_ULTIMATE.start_dll_circular_prepend_~head#1.offset|)) (.cse6 (bvadd (_ bv8 64) .cse12))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| .cse2) .cse6))) (select (select (let ((.cse0 (store (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base| v_ArrVal_575))) (store .cse1 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base|) |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.offset| v_ArrVal_695))) .cse2 v_ArrVal_585) .cse3 v_ArrVal_580))) (store .cse0 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.offset|) v_ArrVal_697))) (select (select (store (let ((.cse4 (let ((.cse5 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base| (store .cse8 |c_ULTIMATE.start_dll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base|)))) (store .cse7 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base|) |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.offset| .cse2))))) (store .cse5 .cse2 (store (select .cse5 .cse2) .cse6 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base|))))) (store .cse4 .cse3 (store (select .cse4 .cse3) |v_ULTIMATE.start_dll_circular_prepend_~last~1#1.offset_3| |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base|))) |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base| v_ArrVal_674) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (select (select (store (let ((.cse9 (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_prepend_~head#1.base| (store .cse13 |c_ULTIMATE.start_dll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.offset|)))) (store .cse11 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base|) |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.offset| .cse12))))) (store .cse10 .cse2 (store (select .cse10 .cse2) .cse6 |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.offset|))))) (store .cse9 .cse3 (store (select .cse9 .cse3) |v_ULTIMATE.start_dll_circular_prepend_~last~1#1.offset_3| |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.offset|))) |c_ULTIMATE.start_dll_circular_prepend_#t~ret9#1.base| v_ArrVal_651) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (_ bv16 64))))))))) is different from false [2022-01-10 06:07:31,637 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:07:31,638 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 739 treesize of output 716 [2022-01-10 06:07:32,334 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:07:32,337 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 41635326 treesize of output 41198251 [2022-01-10 06:07:35,445 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 43053430 treesize of output 40450934 [2022-01-10 06:07:38,419 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 46017398 treesize of output 39893878 [2022-01-10 06:07:42,082 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 44461430 treesize of output 43007094 [2022-01-10 06:08:02,162 WARN L228 SmtUtils]: Spent 12.14s on a formula simplification. DAG size of input: 3020 DAG size of output: 3020 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-10 06:08:25,269 WARN L228 SmtUtils]: Spent 14.83s on a formula simplification. DAG size of input: 3018 DAG size of output: 3018 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)