/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/res2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:06:22,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:06:22,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:06:22,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:06:22,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:06:22,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:06:22,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:06:22,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:06:22,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:06:22,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:06:22,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:06:22,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:06:22,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:06:22,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:06:22,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:06:22,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:06:22,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:06:22,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:06:22,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:06:22,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:06:22,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:06:22,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:06:22,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:06:22,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:06:22,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:06:22,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:06:22,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:06:22,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:06:22,444 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 04:06:22,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:06:22,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:06:22,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:06:22,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:06:22,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:06:22,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:06:22,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:06:22,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:06:22,475 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:06:22,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:06:22,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:06:22,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:06:22,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:06:22,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:06:22,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:06:22,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:06:22,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:06:22,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:06:22,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:06:22,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:06:22,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:06:22,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:06:22,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:06:22,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:06:22,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:06:22,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:06:22,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:06:22,479 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:06:22,479 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:06:22,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:06:22,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:06:22,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:06:22,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:06:22,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:06:22,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:06:22,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:06:22,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:06:22,754 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:06:22,755 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:06:22,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2.c [2022-01-10 04:06:22,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef720453/22b58631ceac41e886e1921d7b457259/FLAG996972992 [2022-01-10 04:06:23,201 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:06:23,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2.c [2022-01-10 04:06:23,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef720453/22b58631ceac41e886e1921d7b457259/FLAG996972992 [2022-01-10 04:06:23,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef720453/22b58631ceac41e886e1921d7b457259 [2022-01-10 04:06:23,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:06:23,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:06:23,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:06:23,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:06:23,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:06:23,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:23,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7127ec1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23, skipping insertion in model container [2022-01-10 04:06:23,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:23,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:06:23,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:06:23,835 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/res2.c[587,600] [2022-01-10 04:06:23,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:06:23,891 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:06:23,908 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/res2.c[587,600] [2022-01-10 04:06:23,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:06:23,947 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:06:23,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23 WrapperNode [2022-01-10 04:06:23,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:06:23,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:06:23,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:06:23,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:06:23,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:23,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:23,999 INFO L137 Inliner]: procedures = 21, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2022-01-10 04:06:23,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:06:24,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:06:24,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:06:24,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:06:24,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:24,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:24,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:24,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:24,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:24,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:24,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:24,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:06:24,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:06:24,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:06:24,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:06:24,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (1/1) ... [2022-01-10 04:06:24,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:06:24,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:06:24,084 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 04:06:24,111 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 04:06:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:06:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:06:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 04:06:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:06:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:06:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 04:06:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:06:24,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:06:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:06:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 04:06:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 04:06:24,231 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:06:24,232 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:06:24,471 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:06:24,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:06:24,477 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-10 04:06:24,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:06:24 BoogieIcfgContainer [2022-01-10 04:06:24,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:06:24,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:06:24,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:06:24,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:06:24,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:06:23" (1/3) ... [2022-01-10 04:06:24,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3333ebcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:06:24, skipping insertion in model container [2022-01-10 04:06:24,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:23" (2/3) ... [2022-01-10 04:06:24,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3333ebcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:06:24, skipping insertion in model container [2022-01-10 04:06:24,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:06:24" (3/3) ... [2022-01-10 04:06:24,486 INFO L111 eAbstractionObserver]: Analyzing ICFG res2.c [2022-01-10 04:06:24,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:06:24,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:06:24,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:06:24,532 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 04:06:24,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:06:24,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 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 04:06:24,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 04:06:24,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:24,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:24,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2022-01-10 04:06:24,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:24,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958012153] [2022-01-10 04:06:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:24,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:24,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:24,567 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 04:06:24,568 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 04:06:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:24,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 04:06:24,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:24,703 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 04:06:24,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:06:24,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:24,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958012153] [2022-01-10 04:06:24,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958012153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:06:24,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:06:24,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:06:24,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882334075] [2022-01-10 04:06:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:06:24,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 04:06:24,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:24,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 04:06:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 04:06:24,737 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 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) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 04:06:24,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:24,755 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-01-10 04:06:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 04:06:24,757 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2022-01-10 04:06:24,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:24,762 INFO L225 Difference]: With dead ends: 56 [2022-01-10 04:06:24,762 INFO L226 Difference]: Without dead ends: 26 [2022-01-10 04:06:24,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 04:06:24,768 INFO L933 BasicCegarLoop]: 36 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, 36 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 04:06:24,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:06:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-10 04:06:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-10 04:06:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 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 04:06:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-01-10 04:06:24,796 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2022-01-10 04:06:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:24,797 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-01-10 04:06:24,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 04:06:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-01-10 04:06:24,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 04:06:24,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:24,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:24,810 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 04:06:25,007 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 04:06:25,007 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:25,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2022-01-10 04:06:25,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:25,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553188421] [2022-01-10 04:06:25,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:25,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:25,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:25,012 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 04:06:25,013 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 04:06:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:25,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 04:06:25,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:25,234 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 04:06:25,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:06:25,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:25,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553188421] [2022-01-10 04:06:25,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553188421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:06:25,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:06:25,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:06:25,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564190925] [2022-01-10 04:06:25,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:06:25,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:06:25,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:25,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:06:25,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:06:25,238 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 04:06:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:25,450 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-01-10 04:06:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 04:06:25,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2022-01-10 04:06:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:25,453 INFO L225 Difference]: With dead ends: 57 [2022-01-10 04:06:25,453 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 04:06:25,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 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 04:06:25,455 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 62 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:06:25,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 12 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:06:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 04:06:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-01-10 04:06:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 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 04:06:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-01-10 04:06:25,463 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2022-01-10 04:06:25,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:25,463 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-01-10 04:06:25,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 04:06:25,464 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-01-10 04:06:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 04:06:25,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:25,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:25,475 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 04:06:25,674 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 04:06:25,675 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2022-01-10 04:06:25,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:25,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524453251] [2022-01-10 04:06:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:25,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:25,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:25,678 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 04:06:25,680 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 04:06:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:25,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-10 04:06:25,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:26,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:26,067 INFO L353 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2022-01-10 04:06:26,068 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 1 case distinctions, treesize of input 18 treesize of output 18 [2022-01-10 04:06:26,115 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 04:06:26,341 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-01-10 04:06:26,342 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-01-10 04:06:26,942 INFO L353 Elim1Store]: treesize reduction 37, result has 26.0 percent of original size [2022-01-10 04:06:26,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 49 [2022-01-10 04:06:27,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:27,582 INFO L353 Elim1Store]: treesize reduction 88, result has 32.3 percent of original size [2022-01-10 04:06:27,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 77 [2022-01-10 04:06:28,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:28,267 INFO L353 Elim1Store]: treesize reduction 37, result has 26.0 percent of original size [2022-01-10 04:06:28,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 60 [2022-01-10 04:06:29,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:29,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:29,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:29,147 INFO L353 Elim1Store]: treesize reduction 30, result has 25.0 percent of original size [2022-01-10 04:06:29,148 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 84 [2022-01-10 04:06:30,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:30,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:30,126 INFO L353 Elim1Store]: treesize reduction 45, result has 22.4 percent of original size [2022-01-10 04:06:30,127 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 4 case distinctions, treesize of input 135 treesize of output 97 [2022-01-10 04:06:30,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:30,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:30,617 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-01-10 04:06:30,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 123 [2022-01-10 04:06:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:06:30,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:06:45,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:45,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:45,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:46,047 INFO L353 Elim1Store]: treesize reduction 456, result has 43.4 percent of original size [2022-01-10 04:06:46,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 20 case distinctions, treesize of input 9914 treesize of output 1806 [2022-01-10 04:06:46,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,189 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:46,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1545 treesize of output 1555 [2022-01-10 04:06:46,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,315 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:46,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1541 treesize of output 1551 [2022-01-10 04:06:46,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,423 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:46,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1537 treesize of output 1547 [2022-01-10 04:06:46,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,574 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:46,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1533 treesize of output 1543 [2022-01-10 04:06:46,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,612 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 1372 treesize of output 1366 [2022-01-10 04:06:46,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,631 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 1252 treesize of output 1246 [2022-01-10 04:06:46,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:46,647 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 1132 treesize of output 1126 [2022-01-10 04:06:46,664 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-01-10 04:06:46,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1256 treesize of output 1250 [2022-01-10 04:06:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:06:47,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:47,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524453251] [2022-01-10 04:06:47,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524453251] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:06:47,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:06:47,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-01-10 04:06:47,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736872190] [2022-01-10 04:06:47,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:06:47,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-10 04:06:47,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-10 04:06:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2022-01-10 04:06:47,675 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 04:07:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:07:06,877 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2022-01-10 04:07:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 04:07:06,878 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 31 [2022-01-10 04:07:06,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:07:06,880 INFO L225 Difference]: With dead ends: 82 [2022-01-10 04:07:06,880 INFO L226 Difference]: Without dead ends: 76 [2022-01-10 04:07:06,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 04:07:06,882 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:07:06,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 211 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 83 Unchecked, 4.2s Time] [2022-01-10 04:07:06,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-10 04:07:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2022-01-10 04:07:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 70 states have internal predecessors, (86), 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 04:07:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2022-01-10 04:07:06,898 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 31 [2022-01-10 04:07:06,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:07:06,898 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2022-01-10 04:07:06,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 04:07:06,899 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2022-01-10 04:07:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 04:07:06,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:07:06,900 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:07:06,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 04:07:07,100 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 04:07:07,101 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:07:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:07:07,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245574, now seen corresponding path program 2 times [2022-01-10 04:07:07,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:07:07,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385145397] [2022-01-10 04:07:07,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 04:07:07,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:07:07,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:07:07,104 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 04:07:07,105 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 04:07:07,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 04:07:07,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:07:07,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:07:07,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:07:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 04:07:07,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:07:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 04:07:07,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:07:07,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385145397] [2022-01-10 04:07:07,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385145397] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:07:07,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:07:07,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-01-10 04:07:07,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638458395] [2022-01-10 04:07:07,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:07:07,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 04:07:07,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:07:07,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 04:07:07,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-01-10 04:07:07,710 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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 04:07:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:07:08,454 INFO L93 Difference]: Finished difference Result 142 states and 172 transitions. [2022-01-10 04:07:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 04:07:08,455 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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 33 [2022-01-10 04:07:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:07:08,457 INFO L225 Difference]: With dead ends: 142 [2022-01-10 04:07:08,457 INFO L226 Difference]: Without dead ends: 75 [2022-01-10 04:07:08,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-01-10 04:07:08,458 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 215 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:07:08,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 25 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 04:07:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-10 04:07:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2022-01-10 04:07:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 63 states have internal predecessors, (74), 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 04:07:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2022-01-10 04:07:08,468 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 33 [2022-01-10 04:07:08,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:07:08,468 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2022-01-10 04:07:08,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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 04:07:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2022-01-10 04:07:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 04:07:08,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:07:08,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:07:08,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 04:07:08,671 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 04:07:08,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:07:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:07:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash 447877832, now seen corresponding path program 3 times [2022-01-10 04:07:08,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:07:08,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413627937] [2022-01-10 04:07:08,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 04:07:08,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:07:08,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:07:08,674 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 04:07:08,674 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 04:07:08,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 04:07:08,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:07:08,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 04:07:08,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:07:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 04:07:09,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:07:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 04:07:09,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:07:09,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413627937] [2022-01-10 04:07:09,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413627937] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:07:09,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:07:09,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-01-10 04:07:09,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186285649] [2022-01-10 04:07:09,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:07:09,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 04:07:09,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:07:09,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 04:07:09,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-01-10 04:07:09,419 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 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 04:07:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:07:10,541 INFO L93 Difference]: Finished difference Result 140 states and 171 transitions. [2022-01-10 04:07:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 04:07:10,542 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 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 35 [2022-01-10 04:07:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:07:10,543 INFO L225 Difference]: With dead ends: 140 [2022-01-10 04:07:10,543 INFO L226 Difference]: Without dead ends: 96 [2022-01-10 04:07:10,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2022-01-10 04:07:10,544 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 267 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:07:10,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 25 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 04:07:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-10 04:07:10,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2022-01-10 04:07:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 83 states have internal predecessors, (94), 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 04:07:10,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2022-01-10 04:07:10,556 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 35 [2022-01-10 04:07:10,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:07:10,556 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2022-01-10 04:07:10,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 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 04:07:10,557 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2022-01-10 04:07:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 04:07:10,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:07:10,558 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:07:10,573 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 04:07:10,768 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 04:07:10,769 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:07:10,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:07:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1410382416, now seen corresponding path program 4 times [2022-01-10 04:07:10,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:07:10,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012033906] [2022-01-10 04:07:10,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 04:07:10,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:07:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:07:10,771 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 04:07:10,772 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 04:07:11,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 04:07:11,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:07:11,110 WARN L261 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 79 conjunts are in the unsatisfiable core [2022-01-10 04:07:11,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:07:11,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:11,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:11,202 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 04:07:11,252 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 04:07:11,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:11,365 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-01-10 04:07:11,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:11,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:11,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:11,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:11,797 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-01-10 04:07:11,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 50 [2022-01-10 04:07:12,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:12,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:12,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:12,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:12,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:12,703 INFO L353 Elim1Store]: treesize reduction 117, result has 19.3 percent of original size [2022-01-10 04:07:12,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 107 treesize of output 68 [2022-01-10 04:07:13,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:13,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:13,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:13,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:13,241 INFO L353 Elim1Store]: treesize reduction 66, result has 24.1 percent of original size [2022-01-10 04:07:13,241 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 125 treesize of output 73 [2022-01-10 04:07:13,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:13,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:13,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:13,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:13,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:13,933 INFO L353 Elim1Store]: treesize reduction 47, result has 31.9 percent of original size [2022-01-10 04:07:13,933 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 8 case distinctions, treesize of input 117 treesize of output 101 [2022-01-10 04:07:14,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:14,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:14,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:14,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:14,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:14,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:14,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:14,699 INFO L353 Elim1Store]: treesize reduction 61, result has 31.5 percent of original size [2022-01-10 04:07:14,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 133 treesize of output 124 [2022-01-10 04:07:15,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:15,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:15,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:15,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:15,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:15,527 INFO L353 Elim1Store]: treesize reduction 108, result has 25.5 percent of original size [2022-01-10 04:07:15,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 143 treesize of output 113 [2022-01-10 04:07:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:16,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:16,105 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 197 treesize of output 145 [2022-01-10 04:07:16,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:16,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:17,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:17,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:17,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:17,026 INFO L353 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-01-10 04:07:17,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 261 treesize of output 241 [2022-01-10 04:07:17,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:17,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:17,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:17,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:17,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:17,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:17,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:17,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:17,808 INFO L353 Elim1Store]: treesize reduction 28, result has 26.3 percent of original size [2022-01-10 04:07:17,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 273 treesize of output 256 [2022-01-10 04:07:18,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:18,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:18,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:18,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:18,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:18,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:18,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:18,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:18,985 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-10 04:07:18,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 335 treesize of output 271 [2022-01-10 04:07:19,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:19,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:19,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:19,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:19,811 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-10 04:07:19,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 505 treesize of output 459 [2022-01-10 04:07:20,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:20,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:20,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:20,504 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-10 04:07:20,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 853 treesize of output 801 [2022-01-10 04:07:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:07:20,642 INFO L328 TraceCheckSpWp]: Computing backward predicates...