/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/array-fpi/sina4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:08:15,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:08:15,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:08:15,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:08:15,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:08:15,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:08:15,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:08:15,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:08:15,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:08:15,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:08:15,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:08:15,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:08:15,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:08:15,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:08:15,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:08:15,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:08:15,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:08:15,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:08:15,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:08:15,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:08:15,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:08:15,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:08:15,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:08:15,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:08:15,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:08:15,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:08:15,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:08:15,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:08:15,979 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 04:08:16,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:08:16,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:08:16,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:08:16,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:08:16,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:08:16,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:08:16,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:08:16,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:08:16,003 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:08:16,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:08:16,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:08:16,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:08:16,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:08:16,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:08:16,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:08:16,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:08:16,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:08:16,006 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:08:16,006 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:08:16,006 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:08:16,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:08:16,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:08:16,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:08:16,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:08:16,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:08:16,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:08:16,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:08:16,184 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:08:16,187 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:08:16,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4.c [2022-01-10 04:08:16,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24da80565/471041bf7a6e49a9af15c3e40a0a31d2/FLAGe5b337dc8 [2022-01-10 04:08:16,571 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:08:16,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4.c [2022-01-10 04:08:16,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24da80565/471041bf7a6e49a9af15c3e40a0a31d2/FLAGe5b337dc8 [2022-01-10 04:08:17,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24da80565/471041bf7a6e49a9af15c3e40a0a31d2 [2022-01-10 04:08:17,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:08:17,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:08:17,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:08:17,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:08:17,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:08:17,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ee8cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17, skipping insertion in model container [2022-01-10 04:08:17,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:08:17,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:08:17,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4.c[588,601] [2022-01-10 04:08:17,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:08:17,169 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:08:17,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4.c[588,601] [2022-01-10 04:08:17,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:08:17,191 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:08:17,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17 WrapperNode [2022-01-10 04:08:17,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:08:17,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:08:17,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:08:17,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:08:17,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,231 INFO L137 Inliner]: procedures = 19, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2022-01-10 04:08:17,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:08:17,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:08:17,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:08:17,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:08:17,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:08:17,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:08:17,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:08:17,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:08:17,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (1/1) ... [2022-01-10 04:08:17,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:08:17,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:08:17,276 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 04:08:17,281 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 04:08:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:08:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:08:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 04:08:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:08:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:08:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:08:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:08:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:08:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 04:08:17,367 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:08:17,368 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:08:17,514 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:08:17,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:08:17,519 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 04:08:17,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:08:17 BoogieIcfgContainer [2022-01-10 04:08:17,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:08:17,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:08:17,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:08:17,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:08:17,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:08:17" (1/3) ... [2022-01-10 04:08:17,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3cd30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:08:17, skipping insertion in model container [2022-01-10 04:08:17,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:08:17" (2/3) ... [2022-01-10 04:08:17,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3cd30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:08:17, skipping insertion in model container [2022-01-10 04:08:17,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:08:17" (3/3) ... [2022-01-10 04:08:17,529 INFO L111 eAbstractionObserver]: Analyzing ICFG sina4.c [2022-01-10 04:08:17,535 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:08:17,535 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:08:17,594 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:08:17,608 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 04:08:17,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:08:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:08:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 04:08:17,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:08:17,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:08:17,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:08:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:08:17,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2022-01-10 04:08:17,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:08:17,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665479528] [2022-01-10 04:08:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:08:17,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:08:17,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:08:17,641 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 04:08:17,642 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 04:08:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:08:17,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 04:08:17,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:08:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:08:17,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:08:17,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:08:17,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665479528] [2022-01-10 04:08:17,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665479528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:08:17,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:08:17,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:08:17,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327298619] [2022-01-10 04:08:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:08:17,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 04:08:17,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:08:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 04:08:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 04:08:17,806 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:08:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:08:17,819 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2022-01-10 04:08:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 04:08:17,820 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 04:08:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:08:17,830 INFO L225 Difference]: With dead ends: 50 [2022-01-10 04:08:17,830 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 04:08:17,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 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 04:08:17,835 INFO L933 BasicCegarLoop]: 32 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, 32 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 04:08:17,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:08:17,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 04:08:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-10 04:08:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:08:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 04:08:17,865 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2022-01-10 04:08:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:08:17,865 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 04:08:17,866 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:08:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 04:08:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 04:08:17,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:08:17,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:08:17,873 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 04:08:18,073 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 04:08:18,074 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:08:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:08:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2022-01-10 04:08:18,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:08:18,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218730355] [2022-01-10 04:08:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:08:18,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:08:18,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:08:18,077 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 04:08:18,078 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 04:08:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:08:18,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 04:08:18,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:08:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:08:18,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:08:18,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:08:18,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218730355] [2022-01-10 04:08:18,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218730355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:08:18,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:08:18,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:08:18,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162275851] [2022-01-10 04:08:18,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:08:18,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:08:18,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:08:18,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:08:18,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:08:18,265 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:08:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:08:18,433 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2022-01-10 04:08:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 04:08:18,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 04:08:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:08:18,434 INFO L225 Difference]: With dead ends: 53 [2022-01-10 04:08:18,434 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 04:08:18,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:08:18,435 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 74 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:08:18,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 15 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:08:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 04:08:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2022-01-10 04:08:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:08:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-10 04:08:18,439 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2022-01-10 04:08:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:08:18,440 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-10 04:08:18,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:08:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-10 04:08:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 04:08:18,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:08:18,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:08:18,450 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 04:08:18,646 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 04:08:18,647 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:08:18,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:08:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2022-01-10 04:08:18,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:08:18,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882915432] [2022-01-10 04:08:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:08:18,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:08:18,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:08:18,649 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 04:08:18,650 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 04:08:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:08:18,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-10 04:08:18,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:08:18,878 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 11 treesize of output 9 [2022-01-10 04:08:18,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:18,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:18,894 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 18 treesize of output 19 [2022-01-10 04:08:18,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:18,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:18,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:18,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 52 [2022-01-10 04:08:19,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:19,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:19,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:19,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:19,362 INFO L353 Elim1Store]: treesize reduction 69, result has 30.3 percent of original size [2022-01-10 04:08:19,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 130 treesize of output 72 [2022-01-10 04:08:19,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:19,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 80 [2022-01-10 04:08:19,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:19,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:19,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:19,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:19,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:19,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:19,942 INFO L353 Elim1Store]: treesize reduction 96, result has 33.8 percent of original size [2022-01-10 04:08:19,942 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 4 new quantified variables, introduced 10 case distinctions, treesize of input 154 treesize of output 138 [2022-01-10 04:08:20,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:20,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:20,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:20,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:20,826 INFO L353 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-01-10 04:08:20,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 251 treesize of output 177 [2022-01-10 04:08:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:08:20,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:08:58,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:58,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:08:58,274 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:08:58,274 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 14 case distinctions, treesize of input 3355 treesize of output 1682 [2022-01-10 04:08:58,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,286 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 1474 treesize of output 1444 [2022-01-10 04:08:58,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,300 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 1590 treesize of output 1512 [2022-01-10 04:08:58,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,325 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 1202 treesize of output 1188 [2022-01-10 04:08:58,348 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 921 treesize of output 917 [2022-01-10 04:08:58,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,383 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:08:58,383 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 985 treesize of output 991 [2022-01-10 04:08:58,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,395 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 491 treesize of output 479 [2022-01-10 04:08:58,407 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 75 treesize of output 71 [2022-01-10 04:08:58,423 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 11 treesize of output 9 [2022-01-10 04:08:58,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:08:58,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:09:03,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:09:03,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882915432] [2022-01-10 04:09:03,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882915432] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:09:03,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:09:03,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-01-10 04:09:03,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238350834] [2022-01-10 04:09:03,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:09:03,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-10 04:09:03,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:09:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-10 04:09:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=725, Unknown=13, NotChecked=0, Total=870 [2022-01-10 04:09:03,369 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 30 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:09:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:09:05,869 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2022-01-10 04:09:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 04:09:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-10 04:09:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:09:05,871 INFO L225 Difference]: With dead ends: 51 [2022-01-10 04:09:05,872 INFO L226 Difference]: Without dead ends: 49 [2022-01-10 04:09:05,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=143, Invalid=773, Unknown=14, NotChecked=0, Total=930 [2022-01-10 04:09:05,873 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:09:05,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 105 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 199 Unchecked, 0.3s Time] [2022-01-10 04:09:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-10 04:09:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2022-01-10 04:09:05,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:09:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-01-10 04:09:05,882 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 24 [2022-01-10 04:09:05,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:09:05,882 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-01-10 04:09:05,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:09:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-01-10 04:09:05,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 04:09:05,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:09:05,883 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:09:05,893 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 04:09:06,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:09:06,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:09:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:09:06,085 INFO L85 PathProgramCache]: Analyzing trace with hash 831040416, now seen corresponding path program 2 times [2022-01-10 04:09:06,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:09:06,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273306643] [2022-01-10 04:09:06,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 04:09:06,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:09:06,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:09:06,086 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:09:06,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:09:06,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 04:09:06,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:09:06,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:09:06,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:09:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 04:09:06,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:09:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 04:09:06,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:09:06,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273306643] [2022-01-10 04:09:06,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273306643] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:09:06,539 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:09:06,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-01-10 04:09:06,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428722940] [2022-01-10 04:09:06,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:09:06,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 04:09:06,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:09:06,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 04:09:06,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-01-10 04:09:06,540 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:09:07,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:09:07,116 INFO L93 Difference]: Finished difference Result 99 states and 115 transitions. [2022-01-10 04:09:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 04:09:07,117 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-10 04:09:07,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:09:07,117 INFO L225 Difference]: With dead ends: 99 [2022-01-10 04:09:07,117 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 04:09:07,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-01-10 04:09:07,118 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 186 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:09:07,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 51 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 04:09:07,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 04:09:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 46. [2022-01-10 04:09:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:09:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-01-10 04:09:07,123 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 26 [2022-01-10 04:09:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:09:07,124 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-01-10 04:09:07,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:09:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-01-10 04:09:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 04:09:07,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:09:07,124 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:09:07,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 04:09:07,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:09:07,327 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:09:07,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:09:07,328 INFO L85 PathProgramCache]: Analyzing trace with hash -587916192, now seen corresponding path program 3 times [2022-01-10 04:09:07,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:09:07,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121840813] [2022-01-10 04:09:07,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 04:09:07,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:09:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:09:07,329 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 04:09:07,330 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 04:09:07,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 04:09:07,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:09:07,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 04:09:07,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:09:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 04:09:07,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:09:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 04:09:07,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:09:07,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121840813] [2022-01-10 04:09:07,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121840813] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:09:07,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:09:07,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-01-10 04:09:07,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5463524] [2022-01-10 04:09:07,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:09:07,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 04:09:07,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:09:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 04:09:07,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-01-10 04:09:07,910 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:09:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:09:08,787 INFO L93 Difference]: Finished difference Result 129 states and 151 transitions. [2022-01-10 04:09:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 04:09:08,787 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-10 04:09:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:09:08,788 INFO L225 Difference]: With dead ends: 129 [2022-01-10 04:09:08,788 INFO L226 Difference]: Without dead ends: 94 [2022-01-10 04:09:08,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2022-01-10 04:09:08,789 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 333 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:09:08,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 71 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 04:09:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-10 04:09:08,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 68. [2022-01-10 04:09:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:09:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2022-01-10 04:09:08,795 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 26 [2022-01-10 04:09:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:09:08,796 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2022-01-10 04:09:08,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:09:08,796 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2022-01-10 04:09:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 04:09:08,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:09:08,797 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:09:08,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 04:09:08,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:09:08,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:09:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:09:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash -826292134, now seen corresponding path program 4 times [2022-01-10 04:09:09,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:09:09,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665916306] [2022-01-10 04:09:09,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 04:09:09,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:09:09,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:09:09,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:09:09,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 04:09:09,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 04:09:09,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:09:09,195 WARN L261 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-10 04:09:09,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:09:09,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:09,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,266 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 18 treesize of output 19 [2022-01-10 04:09:09,279 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 11 treesize of output 9 [2022-01-10 04:09:09,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 52 [2022-01-10 04:09:09,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:09,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:09,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:09,578 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-10 04:09:09,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 81 [2022-01-10 04:09:10,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:10,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:10,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:10,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:10,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:10,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:10,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:10,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:10,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:10,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:10,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:10,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:10,160 INFO L353 Elim1Store]: treesize reduction 167, result has 17.7 percent of original size [2022-01-10 04:09:10,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 157 treesize of output 111 [2022-01-10 04:09:11,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 115 [2022-01-10 04:09:11,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:11,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:11,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:11,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:11,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,518 INFO L353 Elim1Store]: treesize reduction 78, result has 21.2 percent of original size [2022-01-10 04:09:11,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 256 treesize of output 184 [2022-01-10 04:09:11,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:11,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:11,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:11,803 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-10 04:09:11,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 290 treesize of output 223 [2022-01-10 04:09:12,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,149 INFO L353 Elim1Store]: treesize reduction 184, result has 23.0 percent of original size [2022-01-10 04:09:12,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 244 treesize of output 242 [2022-01-10 04:09:12,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:12,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:12,848 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-01-10 04:09:12,849 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 361 treesize of output 361 [2022-01-10 04:09:13,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:13,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:09:13,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:13,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:09:13,839 INFO L353 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-01-10 04:09:13,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 391 treesize of output 317 [2022-01-10 04:09:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:09:13,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:09:16,812 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_184 (_ BitVec 32)) (v_ArrVal_183 (_ BitVec 32)) (|ULTIMATE.start_main_~b~0#1.base| (_ BitVec 64))) (= (let ((.cse0 (let ((.cse5 (bvmul (_ bv8 64) ((_ sign_extend 32) (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~i~0#1|))))) (store (store (let ((.cse2 (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~0#1|)))) (let ((.cse3 (bvadd (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (concat (select .cse4 (bvadd .cse2 (_ bv4 64) |c_ULTIMATE.start_main_~a~0#1.offset|)) (select .cse4 (bvadd .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (_ bv1 64)))) (store (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (bvadd .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|) ((_ extract 31 0) .cse3)) (bvadd .cse2 (_ bv4 64) |c_ULTIMATE.start_main_~b~0#1.offset|) ((_ extract 63 32) .cse3)))) (bvadd .cse5 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_184) (bvadd .cse5 (_ bv4 64) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_183))) (.cse1 (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))))) (concat (select .cse0 (bvadd .cse1 (_ bv4 64) |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse0 (bvadd .cse1 |c_ULTIMATE.start_main_~b~0#1.offset|)))) ((_ sign_extend 32) (bvadd c_~N~0 (_ bv2 32))))) is different from false