/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/eqn1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:02:46,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:02:46,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:02:46,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:02:46,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:02:46,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:02:46,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:02:46,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:02:46,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:02:46,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:02:46,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:02:46,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:02:46,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:02:46,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:02:46,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:02:46,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:02:46,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:02:46,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:02:46,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:02:46,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:02:46,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:02:46,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:02:46,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:02:46,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:02:46,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:02:46,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:02:46,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:02:46,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:02:46,827 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 04:02:46,851 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:02:46,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:02:46,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:02:46,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:02:46,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:02:46,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:02:46,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:02:46,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:02:46,853 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:02:46,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:02:46,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:02:46,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:02:46,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:02:46,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:02:46,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:02:46,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:02:46,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:02:46,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:02:46,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:02:46,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:02:46,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:02:46,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:02:46,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:02:46,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:02:46,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:02:46,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:02:46,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:02:46,856 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:02:46,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:02:46,857 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:02:46,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:02:46,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:02:46,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:02:46,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:02:47,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:02:47,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:02:47,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:02:47,062 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:02:47,067 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:02:47,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn1.c [2022-01-10 04:02:47,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/462d14b7a/903d45bbea1841699ca2c76c8829b5e3/FLAGfdb056a45 [2022-01-10 04:02:47,412 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:02:47,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn1.c [2022-01-10 04:02:47,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/462d14b7a/903d45bbea1841699ca2c76c8829b5e3/FLAGfdb056a45 [2022-01-10 04:02:47,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/462d14b7a/903d45bbea1841699ca2c76c8829b5e3 [2022-01-10 04:02:47,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:02:47,855 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:02:47,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:02:47,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:02:47,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:02:47,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:02:47" (1/1) ... [2022-01-10 04:02:47,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4987f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:47, skipping insertion in model container [2022-01-10 04:02:47,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:02:47" (1/1) ... [2022-01-10 04:02:47,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:02:47,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:02:47,982 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/eqn1.c[587,600] [2022-01-10 04:02:48,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:02:48,035 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:02:48,045 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/eqn1.c[587,600] [2022-01-10 04:02:48,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:02:48,059 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:02:48,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48 WrapperNode [2022-01-10 04:02:48,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:02:48,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:02:48,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:02:48,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:02:48,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,083 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-01-10 04:02:48,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:02:48,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:02:48,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:02:48,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:02:48,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:02:48,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:02:48,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:02:48,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:02:48,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (1/1) ... [2022-01-10 04:02:48,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:02:48,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:02:48,125 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 04:02:48,134 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 04:02:48,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:02:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:02:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:02:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:02:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:02:48,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:02:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:02:48,213 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:02:48,214 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:02:48,413 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:02:48,419 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:02:48,419 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 04:02:48,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:02:48 BoogieIcfgContainer [2022-01-10 04:02:48,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:02:48,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:02:48,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:02:48,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:02:48,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:02:47" (1/3) ... [2022-01-10 04:02:48,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7784b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:02:48, skipping insertion in model container [2022-01-10 04:02:48,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:02:48" (2/3) ... [2022-01-10 04:02:48,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7784b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:02:48, skipping insertion in model container [2022-01-10 04:02:48,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:02:48" (3/3) ... [2022-01-10 04:02:48,428 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn1.c [2022-01-10 04:02:48,431 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:02:48,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:02:48,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:02:48,472 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 04:02:48,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:02:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 04:02:48,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 04:02:48,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:02:48,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:02:48,485 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:02:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:02:48,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2022-01-10 04:02:48,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:02:48,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258953813] [2022-01-10 04:02:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:02:48,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:02:48,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:02:48,504 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 04:02:48,507 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 04:02:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:02:48,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 04:02:48,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:02:48,652 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 04:02:48,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:02:48,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:02:48,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258953813] [2022-01-10 04:02:48,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258953813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:02:48,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:02:48,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:02:48,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54563206] [2022-01-10 04:02:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:02:48,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 04:02:48,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:02:48,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 04:02:48,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 04:02:48,680 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 04:02:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:02:48,689 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-01-10 04:02:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 04:02:48,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-01-10 04:02:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:02:48,695 INFO L225 Difference]: With dead ends: 38 [2022-01-10 04:02:48,695 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 04:02:48,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 04:02:48,699 INFO L933 BasicCegarLoop]: 24 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, 24 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 04:02:48,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:02:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 04:02:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 04:02:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 04:02:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 04:02:48,720 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-01-10 04:02:48,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:02:48,721 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 04:02:48,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 04:02:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 04:02:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 04:02:48,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:02:48,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:02:48,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 04:02:48,922 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 04:02:48,923 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:02:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:02:48,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2022-01-10 04:02:48,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:02:48,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72228598] [2022-01-10 04:02:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:02:48,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:02:48,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:02:48,925 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 04:02:48,927 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 04:02:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:02:49,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 04:02:49,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:02:49,152 INFO L353 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2022-01-10 04:02:49,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 65 [2022-01-10 04:02:49,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:49,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:49,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:02:49,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:49,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:49,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:02:49,458 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 24 treesize of output 18 [2022-01-10 04:02:49,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:49,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-10 04:02:49,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:49,506 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 19 treesize of output 9 [2022-01-10 04:02:49,644 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:02:49,644 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 1 case distinctions, treesize of input 51 treesize of output 27 [2022-01-10 04:02:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:02:49,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:02:49,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:02:49,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72228598] [2022-01-10 04:02:49,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72228598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:02:49,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:02:49,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:02:49,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775146720] [2022-01-10 04:02:49,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:02:49,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:02:49,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:02:49,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:02:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:02:49,670 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 04:02:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:02:50,083 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-01-10 04:02:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:02:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-01-10 04:02:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:02:50,085 INFO L225 Difference]: With dead ends: 34 [2022-01-10 04:02:50,085 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 04:02:50,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:02:50,086 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:02:50,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 04:02:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 04:02:50,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-01-10 04:02:50,090 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 04:02:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 04:02:50,090 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-10 04:02:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:02:50,091 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 04:02:50,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 04:02:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 04:02:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 04:02:50,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:02:50,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:02:50,106 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 04:02:50,292 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 04:02:50,292 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:02:50,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:02:50,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2022-01-10 04:02:50,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:02:50,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722416393] [2022-01-10 04:02:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:02:50,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:02:50,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:02:50,295 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 04:02:50,297 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 04:02:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:02:50,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:02:50,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:02:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:02:50,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:02:50,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:02:50,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722416393] [2022-01-10 04:02:50,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722416393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:02:50,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:02:50,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 04:02:50,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308779851] [2022-01-10 04:02:50,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:02:50,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:02:50,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:02:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:02:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:02:50,531 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 04:02:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:02:50,926 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-01-10 04:02:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 04:02:50,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 14 [2022-01-10 04:02:50,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:02:50,935 INFO L225 Difference]: With dead ends: 42 [2022-01-10 04:02:50,935 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 04:02:50,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-10 04:02:50,937 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 68 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:02:50,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 25 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 04:02:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 04:02:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2022-01-10 04:02:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 04:02:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-10 04:02:50,941 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-01-10 04:02:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:02:50,941 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-10 04:02:50,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 04:02:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-10 04:02:50,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 04:02:50,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:02:50,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:02:50,953 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 04:02:51,148 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 04:02:51,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:02:51,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:02:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2022-01-10 04:02:51,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:02:51,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948742815] [2022-01-10 04:02:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:02:51,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:02:51,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:02:51,151 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 04:02:51,151 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 04:02:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:02:51,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:02:51,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:02:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:02:51,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:02:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:02:51,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:02:51,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948742815] [2022-01-10 04:02:51,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948742815] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:02:51,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:02:51,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-01-10 04:02:51,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495206188] [2022-01-10 04:02:51,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:02:51,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 04:02:51,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:02:51,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 04:02:51,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-10 04:02:51,633 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 04:02:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:02:52,622 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2022-01-10 04:02:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 04:02:52,622 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 14 [2022-01-10 04:02:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:02:52,623 INFO L225 Difference]: With dead ends: 58 [2022-01-10 04:02:52,623 INFO L226 Difference]: Without dead ends: 49 [2022-01-10 04:02:52,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2022-01-10 04:02:52,624 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:02:52,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 51 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 04:02:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-10 04:02:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2022-01-10 04:02:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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 04:02:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-10 04:02:52,632 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 14 [2022-01-10 04:02:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:02:52,632 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-10 04:02:52,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 04:02:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-10 04:02:52,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 04:02:52,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:02:52,633 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:02:52,640 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 04:02:52,835 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 04:02:52,835 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:02:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:02:52,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2022-01-10 04:02:52,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:02:52,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164159109] [2022-01-10 04:02:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:02:52,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:02:52,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:02:52,838 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 04:02:52,839 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 04:02:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:02:52,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 04:02:52,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:02:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:02:53,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:02:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:02:53,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:02:53,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164159109] [2022-01-10 04:02:53,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164159109] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:02:53,229 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:02:53,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2022-01-10 04:02:53,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390558906] [2022-01-10 04:02:53,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:02:53,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 04:02:53,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:02:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 04:02:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 04:02:53,231 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 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 04:02:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:02:53,728 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-01-10 04:02:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 04:02:53,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 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 04:02:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:02:53,736 INFO L225 Difference]: With dead ends: 41 [2022-01-10 04:02:53,736 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 04:02:53,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-01-10 04:02:53,737 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 69 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:02:53,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 31 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 04:02:53,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 04:02:53,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-10 04:02:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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 04:02:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-01-10 04:02:53,740 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2022-01-10 04:02:53,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:02:53,741 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-01-10 04:02:53,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 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 04:02:53,741 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-01-10 04:02:53,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 04:02:53,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:02:53,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:02:53,751 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 04:02:53,946 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 04:02:53,946 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:02:53,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:02:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2022-01-10 04:02:53,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:02:53,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192598399] [2022-01-10 04:02:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:02:53,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:02:53,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:02:53,948 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 04:02:53,949 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 04:02:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:02:54,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 04:02:54,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:02:54,196 INFO L353 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2022-01-10 04:02:54,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 65 [2022-01-10 04:02:54,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:02:54,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:02:54,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,273 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 19 treesize of output 9 [2022-01-10 04:02:54,356 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 26 treesize of output 20 [2022-01-10 04:02:54,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,363 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 15 treesize of output 9 [2022-01-10 04:02:54,388 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 04:02:54,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 04:02:54,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:54,504 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:02:54,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 43 [2022-01-10 04:02:54,572 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:02:54,572 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 1 case distinctions, treesize of input 53 treesize of output 29 [2022-01-10 04:02:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:02:54,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:02:55,571 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_108 (Array (_ BitVec 64) (_ BitVec 32)))) (= (_ bv1 64) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_108) |c_ULTIMATE.start_main_~b~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 64) |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|))))) is different from false [2022-01-10 04:02:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-10 04:02:55,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:02:55,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192598399] [2022-01-10 04:02:55,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192598399] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:02:55,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:02:55,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 04:02:55,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656502406] [2022-01-10 04:02:55,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:02:55,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 04:02:55,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:02:55,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 04:02:55,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2022-01-10 04:02:55,609 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 04:02:56,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:02:56,666 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2022-01-10 04:02:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 04:02:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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) Word has length 16 [2022-01-10 04:02:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:02:56,674 INFO L225 Difference]: With dead ends: 45 [2022-01-10 04:02:56,674 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 04:02:56,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=71, Invalid=172, Unknown=1, NotChecked=28, Total=272 [2022-01-10 04:02:56,675 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:02:56,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 106 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 33 Unchecked, 0.8s Time] [2022-01-10 04:02:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 04:02:56,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2022-01-10 04:02:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 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 04:02:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-10 04:02:56,679 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2022-01-10 04:02:56,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:02:56,679 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-10 04:02:56,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 04:02:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-10 04:02:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 04:02:56,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:02:56,680 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:02:56,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 04:02:56,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:02:56,884 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:02:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:02:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 2 times [2022-01-10 04:02:56,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:02:56,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051229829] [2022-01-10 04:02:56,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 04:02:56,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:02:56,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:02:56,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:02:56,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 04:02:57,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 04:02:57,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:02:57,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 04:02:57,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:02:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:02:57,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:02:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:02:57,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:02:57,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051229829] [2022-01-10 04:02:57,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051229829] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:02:57,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:02:57,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2022-01-10 04:02:57,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556662840] [2022-01-10 04:02:57,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:02:57,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 04:02:57,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:02:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 04:02:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-01-10 04:02:57,676 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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 04:02:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:02:59,220 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2022-01-10 04:02:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 04:02:59,220 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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 18 [2022-01-10 04:02:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:02:59,221 INFO L225 Difference]: With dead ends: 81 [2022-01-10 04:02:59,221 INFO L226 Difference]: Without dead ends: 72 [2022-01-10 04:02:59,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 04:02:59,222 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 208 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:02:59,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 59 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:02:59,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-10 04:02:59,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 38. [2022-01-10 04:02:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 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 04:02:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-01-10 04:02:59,228 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 18 [2022-01-10 04:02:59,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:02:59,228 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-01-10 04:02:59,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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 04:02:59,228 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-01-10 04:02:59,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 04:02:59,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:02:59,229 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:02:59,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 04:02:59,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:02:59,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:02:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:02:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2022-01-10 04:02:59,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:02:59,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057553746] [2022-01-10 04:02:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:02:59,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:02:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:02:59,441 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:02:59,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 04:02:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:02:59,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-10 04:02:59,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:02:59,751 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 04:02:59,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:02:59,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37 [2022-01-10 04:02:59,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:02:59,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:02:59,891 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-10 04:02:59,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 63 [2022-01-10 04:03:00,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:00,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:00,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:00,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:00,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:00,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:00,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:00,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:00,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:00,034 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-10 04:03:00,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 75 [2022-01-10 04:03:00,433 INFO L353 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-01-10 04:03:00,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 117 treesize of output 57 [2022-01-10 04:03:00,459 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 04:03:00,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:03,834 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 04:03:03,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:03,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057553746] [2022-01-10 04:03:03,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057553746] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:03,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:03,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-01-10 04:03:03,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874053299] [2022-01-10 04:03:03,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:03,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 04:03:03,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:03,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 04:03:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-10 04:03:03,836 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 04:03:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:07,333 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-01-10 04:03:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 04:03:07,342 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 20 [2022-01-10 04:03:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:07,343 INFO L225 Difference]: With dead ends: 47 [2022-01-10 04:03:07,343 INFO L226 Difference]: Without dead ends: 45 [2022-01-10 04:03:07,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-01-10 04:03:07,343 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:07,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 25 Unchecked, 1.0s Time] [2022-01-10 04:03:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-10 04:03:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2022-01-10 04:03:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 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 04:03:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-01-10 04:03:07,349 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 20 [2022-01-10 04:03:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:07,349 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-01-10 04:03:07,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 04:03:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-01-10 04:03:07,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 04:03:07,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:07,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:07,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 04:03:07,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:03:07,551 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:07,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:07,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 3 times [2022-01-10 04:03:07,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:07,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668563823] [2022-01-10 04:03:07,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 04:03:07,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:07,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:07,553 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:03:07,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 04:03:07,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 04:03:07,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:07,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 04:03:07,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:07,968 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 04:03:07,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:07,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-10 04:03:07,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:07,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:07,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:03:08,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 04:03:08,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 04:03:08,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,164 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:08,165 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 48 [2022-01-10 04:03:08,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,225 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:08,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 43 [2022-01-10 04:03:08,293 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:08,294 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 1 case distinctions, treesize of input 53 treesize of output 29 [2022-01-10 04:03:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 04:03:08,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:10,903 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array (_ BitVec 64) (_ BitVec 32)))) (= (_ bv1 64) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_205) |c_ULTIMATE.start_main_~b~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 64) |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|))))) is different from false [2022-01-10 04:03:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2022-01-10 04:03:10,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:10,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668563823] [2022-01-10 04:03:10,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668563823] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:10,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:10,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-01-10 04:03:10,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478775212] [2022-01-10 04:03:10,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:10,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 04:03:10,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:10,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 04:03:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=135, Unknown=1, NotChecked=24, Total=210 [2022-01-10 04:03:10,932 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 04:03:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:13,332 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2022-01-10 04:03:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 04:03:13,341 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 20 [2022-01-10 04:03:13,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:13,342 INFO L225 Difference]: With dead ends: 73 [2022-01-10 04:03:13,342 INFO L226 Difference]: Without dead ends: 71 [2022-01-10 04:03:13,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=158, Invalid=495, Unknown=1, NotChecked=48, Total=702 [2022-01-10 04:03:13,343 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:13,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 67 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 45 Invalid, 0 Unknown, 67 Unchecked, 0.9s Time] [2022-01-10 04:03:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-10 04:03:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 47. [2022-01-10 04:03:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 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 04:03:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-01-10 04:03:13,349 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 20 [2022-01-10 04:03:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:13,350 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-01-10 04:03:13,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 04:03:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-01-10 04:03:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 04:03:13,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:13,350 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:13,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 04:03:13,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:03:13,558 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:13,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 2 times [2022-01-10 04:03:13,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:13,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392906104] [2022-01-10 04:03:13,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 04:03:13,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:13,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:03:13,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 04:03:13,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 04:03:13,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:13,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 04:03:13,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 04:03:14,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 04:03:14,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:14,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392906104] [2022-01-10 04:03:14,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392906104] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:14,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:14,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-01-10 04:03:14,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139701431] [2022-01-10 04:03:14,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:14,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 04:03:14,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:14,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 04:03:14,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-01-10 04:03:14,645 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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 04:03:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:15,827 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2022-01-10 04:03:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 04:03:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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 24 [2022-01-10 04:03:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:15,837 INFO L225 Difference]: With dead ends: 65 [2022-01-10 04:03:15,837 INFO L226 Difference]: Without dead ends: 45 [2022-01-10 04:03:15,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2022-01-10 04:03:15,838 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 94 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:15,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 69 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 04:03:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-10 04:03:15,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2022-01-10 04:03:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 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 04:03:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2022-01-10 04:03:15,843 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2022-01-10 04:03:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:15,843 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2022-01-10 04:03:15,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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 04:03:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2022-01-10 04:03:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 04:03:15,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:15,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:15,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 04:03:16,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:03:16,052 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:16,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 3 times [2022-01-10 04:03:16,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:16,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420707684] [2022-01-10 04:03:16,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 04:03:16,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:16,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:16,054 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:03:16,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 04:03:16,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 04:03:16,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:16,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 04:03:16,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:16,550 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 04:03:16,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:16,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2022-01-10 04:03:16,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,637 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 61 [2022-01-10 04:03:16,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 56 [2022-01-10 04:03:16,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:16,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:16,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:16,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:16,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 96 [2022-01-10 04:03:17,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:17,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 103 [2022-01-10 04:03:18,706 INFO L353 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-01-10 04:03:18,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 114 treesize of output 62 [2022-01-10 04:03:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:03:18,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:03:31,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:31,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420707684] [2022-01-10 04:03:31,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420707684] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:31,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:31,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2022-01-10 04:03:31,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077234421] [2022-01-10 04:03:31,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:31,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-10 04:03:31,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:31,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-10 04:03:31,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-01-10 04:03:31,761 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 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 04:03:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:36,603 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-01-10 04:03:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 04:03:36,603 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 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 04:03:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:36,604 INFO L225 Difference]: With dead ends: 66 [2022-01-10 04:03:36,604 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 04:03:36,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 04:03:36,605 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:36,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 104 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 72 Invalid, 0 Unknown, 162 Unchecked, 1.1s Time] [2022-01-10 04:03:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 04:03:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-01-10 04:03:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 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 04:03:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-01-10 04:03:36,612 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 24 [2022-01-10 04:03:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:36,612 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-01-10 04:03:36,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 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 04:03:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-01-10 04:03:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 04:03:36,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:36,613 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:36,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 04:03:36,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:03:36,824 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:36,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1983767408, now seen corresponding path program 4 times [2022-01-10 04:03:36,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:36,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820077187] [2022-01-10 04:03:36,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 04:03:36,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:36,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:36,826 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:03:36,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 04:03:36,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 04:03:36,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:36,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 04:03:36,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:03:37,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:03:37,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:37,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820077187] [2022-01-10 04:03:37,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820077187] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:37,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:37,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2022-01-10 04:03:37,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613969050] [2022-01-10 04:03:37,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:37,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 04:03:37,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:37,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 04:03:37,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-01-10 04:03:37,694 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 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 04:03:40,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:40,650 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2022-01-10 04:03:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-10 04:03:40,656 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 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 04:03:40,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:40,657 INFO L225 Difference]: With dead ends: 109 [2022-01-10 04:03:40,657 INFO L226 Difference]: Without dead ends: 97 [2022-01-10 04:03:40,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2022-01-10 04:03:40,658 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 279 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:40,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 89 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 04:03:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-10 04:03:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2022-01-10 04:03:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 65 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 04:03:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-01-10 04:03:40,669 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 26 [2022-01-10 04:03:40,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:40,669 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-01-10 04:03:40,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 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 04:03:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-01-10 04:03:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 04:03:40,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:40,670 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:40,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 04:03:40,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:03:40,880 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:40,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:40,880 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 4 times [2022-01-10 04:03:40,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:40,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645340350] [2022-01-10 04:03:40,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 04:03:40,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:40,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:40,881 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:03:40,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 04:03:41,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 04:03:41,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:41,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 04:03:41,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:41,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,406 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:41,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 58 [2022-01-10 04:03:41,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,586 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:41,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 69 [2022-01-10 04:03:41,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:41,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:41,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:41,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:41,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:41,870 INFO L353 Elim1Store]: treesize reduction 63, result has 33.7 percent of original size [2022-01-10 04:03:41,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 179 treesize of output 133 [2022-01-10 04:03:42,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:42,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:42,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:42,414 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-01-10 04:03:42,415 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 189 treesize of output 139 [2022-01-10 04:03:47,709 INFO L353 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2022-01-10 04:03:47,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 299 treesize of output 119 [2022-01-10 04:03:47,877 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 04:03:47,878 INFO L328 TraceCheckSpWp]: Computing backward predicates...