/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/eqn3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:03:06,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:03:06,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:03:06,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:03:06,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:03:06,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:03:06,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:03:06,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:03:06,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:03:06,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:03:06,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:03:06,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:03:06,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:03:06,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:03:06,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:03:06,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:03:06,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:03:06,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:03:06,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:03:06,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:03:06,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:03:06,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:03:06,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:03:06,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:03:06,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:03:06,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:03:06,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:03:06,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:03:06,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:03:06,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:03:06,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:03:06,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:03:06,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:03:06,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:03:06,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:03:06,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:03:06,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:03:06,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:03:06,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:03:06,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:03:06,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:03:06,892 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 04:03:06,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:03:06,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:03:06,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:03:06,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:03:06,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:03:06,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:03:06,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:03:06,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:03:06,907 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:03:06,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:03:06,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:03:06,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:03:06,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:03:06,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:03:06,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:03:06,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:03:06,908 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:03:06,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:03:06,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:03:06,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:03:06,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:03:06,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:03:06,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:03:06,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:03:06,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:03:06,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:03:06,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:03:06,910 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:03:06,910 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:03:06,910 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:03:06,910 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:03:06,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:03:06,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:03:06,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:03:07,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:03:07,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:03:07,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:03:07,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:03:07,141 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:03:07,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn3.c [2022-01-10 04:03:07,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e71767fe/773d74176228430880f1f0fa16c63e4d/FLAG959bf2173 [2022-01-10 04:03:07,536 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:03:07,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn3.c [2022-01-10 04:03:07,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e71767fe/773d74176228430880f1f0fa16c63e4d/FLAG959bf2173 [2022-01-10 04:03:07,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e71767fe/773d74176228430880f1f0fa16c63e4d [2022-01-10 04:03:07,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:03:07,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:03:07,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:03:07,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:03:07,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:03:07,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7984aba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07, skipping insertion in model container [2022-01-10 04:03:07,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:03:07,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:03:07,732 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/eqn3.c[587,600] [2022-01-10 04:03:07,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:03:07,767 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:03:07,779 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/eqn3.c[587,600] [2022-01-10 04:03:07,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:03:07,807 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:03:07,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07 WrapperNode [2022-01-10 04:03:07,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:03:07,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:03:07,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:03:07,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:03:07,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,848 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-01-10 04:03:07,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:03:07,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:03:07,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:03:07,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:03:07,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:03:07,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:03:07,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:03:07,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:03:07,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (1/1) ... [2022-01-10 04:03:07,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:03:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:03:07,914 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 04:03:07,943 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 04:03:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:03:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:03:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:03:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:03:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:03:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:03:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:03:08,018 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:03:08,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:03:08,257 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:03:08,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:03:08,261 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 04:03:08,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:03:08 BoogieIcfgContainer [2022-01-10 04:03:08,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:03:08,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:03:08,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:03:08,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:03:08,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:03:07" (1/3) ... [2022-01-10 04:03:08,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f3342b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:03:08, skipping insertion in model container [2022-01-10 04:03:08,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:03:07" (2/3) ... [2022-01-10 04:03:08,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f3342b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:03:08, skipping insertion in model container [2022-01-10 04:03:08,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:03:08" (3/3) ... [2022-01-10 04:03:08,267 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn3.c [2022-01-10 04:03:08,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:03:08,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:03:08,301 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:03:08,306 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 04:03:08,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:03:08,314 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 04:03:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 04:03:08,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:08,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:08,318 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:08,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:08,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2022-01-10 04:03:08,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:08,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202939367] [2022-01-10 04:03:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:03:08,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:08,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:08,336 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 04:03:08,337 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 04:03:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:03:08,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 04:03:08,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:08,472 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 04:03:08,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:03:08,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:08,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202939367] [2022-01-10 04:03:08,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202939367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:03:08,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:03:08,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:03:08,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852050941] [2022-01-10 04:03:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:03:08,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 04:03:08,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 04:03:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 04:03:08,502 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 04:03:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:08,512 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-01-10 04:03:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 04:03:08,513 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 04:03:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:08,518 INFO L225 Difference]: With dead ends: 38 [2022-01-10 04:03:08,518 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 04:03:08,520 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 04:03:08,522 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 04:03:08,523 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 04:03:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 04:03:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 04:03:08,543 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 04:03:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 04:03:08,545 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-01-10 04:03:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:08,545 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 04:03:08,545 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 04:03:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 04:03:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 04:03:08,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:08,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:08,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 04:03:08,754 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 04:03:08,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2022-01-10 04:03:08,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:08,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976704876] [2022-01-10 04:03:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:03:08,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:08,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:08,757 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 04:03:08,758 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 04:03:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:03:08,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 04:03:08,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:08,944 INFO L353 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2022-01-10 04:03:08,945 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 04:03:08,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,961 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 04:03:08,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:08,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:09,003 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 04:03:09,235 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 04:03:09,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:09,243 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 04:03:09,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:09,271 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 04:03:09,415 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:09,416 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 04:03:09,433 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 04:03:09,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:03:09,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:09,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976704876] [2022-01-10 04:03:09,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976704876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:03:09,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:03:09,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:03:09,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143929875] [2022-01-10 04:03:09,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:03:09,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:03:09,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:09,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:03:09,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:03:09,440 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 04:03:09,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:09,743 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-01-10 04:03:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:03:09,744 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 04:03:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:09,744 INFO L225 Difference]: With dead ends: 34 [2022-01-10 04:03:09,744 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 04:03:09,745 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 04:03:09,745 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 04:03:09,746 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 04:03:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 04:03:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-01-10 04:03:09,749 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 04:03:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 04:03:09,750 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-10 04:03:09,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:09,750 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 04:03:09,750 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 04:03:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 04:03:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 04:03:09,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:09,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:09,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 04:03:09,957 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 04:03:09,958 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:09,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:09,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2022-01-10 04:03:09,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:09,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848845843] [2022-01-10 04:03:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:03:09,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:09,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:09,960 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 04:03:09,962 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 04:03:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:03:10,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:03:10,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:10,215 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 04:03:10,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:03:10,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:10,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848845843] [2022-01-10 04:03:10,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848845843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:03:10,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:03:10,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 04:03:10,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706570268] [2022-01-10 04:03:10,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:03:10,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:03:10,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:03:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:03:10,217 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 04:03:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:10,553 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-01-10 04:03:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 04:03:10,561 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 04:03:10,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:10,561 INFO L225 Difference]: With dead ends: 42 [2022-01-10 04:03:10,561 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 04:03:10,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-10 04:03:10,562 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, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:10,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 25 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 04:03:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 04:03:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2022-01-10 04:03:10,566 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 04:03:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-10 04:03:10,566 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-01-10 04:03:10,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:10,566 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-10 04:03:10,566 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 04:03:10,566 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-10 04:03:10,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 04:03:10,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:10,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:10,574 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 04:03:10,769 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 04:03:10,770 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2022-01-10 04:03:10,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:10,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997157420] [2022-01-10 04:03:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:03:10,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:10,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:10,772 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 04:03:10,772 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 04:03:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:03:10,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:03:10,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:11,112 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 04:03:11,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:11,289 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 04:03:11,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:11,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997157420] [2022-01-10 04:03:11,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997157420] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:11,289 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:11,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-01-10 04:03:11,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519168180] [2022-01-10 04:03:11,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:11,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 04:03:11,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:11,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 04:03:11,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-10 04:03:11,291 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 04:03:12,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:12,171 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2022-01-10 04:03:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 04:03:12,181 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 04:03:12,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:12,183 INFO L225 Difference]: With dead ends: 58 [2022-01-10 04:03:12,183 INFO L226 Difference]: Without dead ends: 49 [2022-01-10 04:03:12,184 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 04:03:12,187 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:12,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 51 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 04:03:12,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-10 04:03:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2022-01-10 04:03:12,201 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 04:03:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-10 04:03:12,205 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 14 [2022-01-10 04:03:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:12,205 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-10 04:03:12,206 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 04:03:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-10 04:03:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 04:03:12,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:12,206 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:12,224 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 04:03:12,411 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 04:03:12,412 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2022-01-10 04:03:12,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:12,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835853063] [2022-01-10 04:03:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:03:12,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:12,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:12,414 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 04:03:12,415 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 04:03:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:03:12,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 04:03:12,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:12,677 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 04:03:12,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:12,807 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 04:03:12,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:12,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835853063] [2022-01-10 04:03:12,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835853063] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:12,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:12,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2022-01-10 04:03:12,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061369207] [2022-01-10 04:03:12,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:12,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 04:03:12,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 04:03:12,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 04:03:12,809 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 04:03:13,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:13,355 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-01-10 04:03:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 04:03:13,363 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 04:03:13,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:13,363 INFO L225 Difference]: With dead ends: 41 [2022-01-10 04:03:13,363 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 04:03:13,364 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 04:03:13,364 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, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:13,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 31 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 04:03:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 04:03:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-10 04:03:13,367 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 04:03:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-01-10 04:03:13,368 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2022-01-10 04:03:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:13,368 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-01-10 04:03:13,368 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 04:03:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-01-10 04:03:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 04:03:13,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:13,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:13,377 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 04:03:13,577 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 04:03:13,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2022-01-10 04:03:13,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:13,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261506415] [2022-01-10 04:03:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:03:13,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:13,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:13,580 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 04:03:13,581 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 04:03:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:03:13,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 04:03:13,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:13,810 INFO L353 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2022-01-10 04:03:13,810 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 04:03:13,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:13,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:13,824 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 04:03:13,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:13,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:13,839 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 04:03:13,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:13,871 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 04:03:13,937 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 04:03:13,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:13,943 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 04:03:13,965 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 04:03:13,996 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 04:03:14,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:14,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:14,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:14,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:14,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:14,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:14,070 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:14,071 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 04:03:14,134 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:14,135 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 04:03:14,150 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 04:03:14,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:15,226 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 04:03:15,250 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 04:03:15,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:15,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261506415] [2022-01-10 04:03:15,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261506415] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:15,251 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:15,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 04:03:15,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018230034] [2022-01-10 04:03:15,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:15,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 04:03:15,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:15,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 04:03:15,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2022-01-10 04:03:15,252 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 04:03:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:16,404 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2022-01-10 04:03:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 04:03:16,413 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 04:03:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:16,413 INFO L225 Difference]: With dead ends: 45 [2022-01-10 04:03:16,413 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 04:03:16,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=71, Invalid=172, Unknown=1, NotChecked=28, Total=272 [2022-01-10 04:03:16,414 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:16,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 106 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 33 Unchecked, 0.9s Time] [2022-01-10 04:03:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 04:03:16,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2022-01-10 04:03:16,417 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 04:03:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-10 04:03:16,418 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2022-01-10 04:03:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:16,418 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-10 04:03:16,418 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 04:03:16,418 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-10 04:03:16,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 04:03:16,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:16,418 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:16,432 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 04:03:16,632 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 04:03:16,633 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:16,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:16,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 2 times [2022-01-10 04:03:16,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:16,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875000264] [2022-01-10 04:03:16,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 04:03:16,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:16,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:16,635 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 04:03:16,636 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 04:03:16,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 04:03:16,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:16,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 04:03:16,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:17,025 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 04:03:17,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:17,381 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 04:03:17,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875000264] [2022-01-10 04:03:17,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875000264] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:17,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:17,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2022-01-10 04:03:17,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111681694] [2022-01-10 04:03:17,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:17,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 04:03:17,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 04:03:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-01-10 04:03:17,383 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 04:03:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:18,901 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2022-01-10 04:03:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 04:03:18,902 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 04:03:18,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:18,902 INFO L225 Difference]: With dead ends: 81 [2022-01-10 04:03:18,902 INFO L226 Difference]: Without dead ends: 72 [2022-01-10 04:03:18,903 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 04:03:18,904 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 04:03:18,904 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 04:03:18,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-10 04:03:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 38. [2022-01-10 04:03:18,908 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 04:03:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-01-10 04:03:18,909 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 18 [2022-01-10 04:03:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-01-10 04:03:18,910 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 04:03:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-01-10 04:03:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 04:03:18,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:18,910 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 04:03:18,919 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 04:03:19,120 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 04:03:19,120 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:19,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:19,121 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2022-01-10 04:03:19,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:19,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020389228] [2022-01-10 04:03:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:03:19,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:19,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:19,123 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 04:03:19,123 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 04:03:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:03:19,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-10 04:03:19,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:19,374 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 04:03:19,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:19,394 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 04:03:19,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:19,474 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-10 04:03:19,475 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 04:03:19,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:19,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:19,580 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-10 04:03:19,581 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 04:03:19,938 INFO L353 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-01-10 04:03:19,939 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 109 treesize of output 57 [2022-01-10 04:03:19,962 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 04:03:19,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:24,205 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 04:03:24,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:24,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020389228] [2022-01-10 04:03:24,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020389228] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:24,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:24,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-01-10 04:03:24,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171939912] [2022-01-10 04:03:24,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:24,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 04:03:24,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 04:03:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-10 04:03:24,207 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 04:03:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:28,093 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-01-10 04:03:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 04:03:28,104 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 04:03:28,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:28,104 INFO L225 Difference]: With dead ends: 47 [2022-01-10 04:03:28,104 INFO L226 Difference]: Without dead ends: 45 [2022-01-10 04:03:28,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-01-10 04:03:28,105 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:28,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 25 Unchecked, 1.1s Time] [2022-01-10 04:03:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-10 04:03:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2022-01-10 04:03:28,110 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 04:03:28,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-01-10 04:03:28,110 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 20 [2022-01-10 04:03:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:28,111 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-01-10 04:03:28,111 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 04:03:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-01-10 04:03:28,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 04:03:28,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:28,112 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:28,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 04:03:28,312 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 04:03:28,313 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:28,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 3 times [2022-01-10 04:03:28,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:28,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359295113] [2022-01-10 04:03:28,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 04:03:28,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:28,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:28,315 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 04:03:28,316 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 04:03:28,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 04:03:28,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:28,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 04:03:28,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:28,675 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 04:03:28,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,684 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 04:03:28,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,688 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 04:03:28,713 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 04:03:28,738 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 04:03:28,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,816 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:28,816 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 04:03:28,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:28,892 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:28,893 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 04:03:28,963 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:28,964 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 04:03:28,982 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 04:03:28,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:31,323 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 04:03:31,347 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 04:03:31,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:31,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359295113] [2022-01-10 04:03:31,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359295113] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:31,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:31,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-01-10 04:03:31,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48088674] [2022-01-10 04:03:31,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:31,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 04:03:31,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:31,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 04:03:31,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=135, Unknown=1, NotChecked=24, Total=210 [2022-01-10 04:03:31,349 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 04:03:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:33,460 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2022-01-10 04:03:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 04:03:33,468 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 04:03:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:33,469 INFO L225 Difference]: With dead ends: 73 [2022-01-10 04:03:33,469 INFO L226 Difference]: Without dead ends: 71 [2022-01-10 04:03:33,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=158, Invalid=495, Unknown=1, NotChecked=48, Total=702 [2022-01-10 04:03:33,470 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:33,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 67 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 45 Invalid, 0 Unknown, 67 Unchecked, 1.0s Time] [2022-01-10 04:03:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-10 04:03:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 47. [2022-01-10 04:03:33,475 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 04:03:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-01-10 04:03:33,476 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 20 [2022-01-10 04:03:33,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:33,476 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-01-10 04:03:33,476 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 04:03:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-01-10 04:03:33,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 04:03:33,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:33,477 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 04:03:33,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 04:03:33,686 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 04:03:33,686 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:33,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 2 times [2022-01-10 04:03:33,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:33,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925343982] [2022-01-10 04:03:33,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 04:03:33,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:33,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:33,688 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 04:03:33,689 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 04:03:33,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 04:03:33,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:33,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 04:03:33,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:34,153 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 04:03:34,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:34,614 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 04:03:34,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:34,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925343982] [2022-01-10 04:03:34,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925343982] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:34,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:34,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-01-10 04:03:34,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851718918] [2022-01-10 04:03:34,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:34,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 04:03:34,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 04:03:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-01-10 04:03:34,616 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 04:03:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:35,653 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2022-01-10 04:03:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 04:03:35,662 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 04:03:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:35,663 INFO L225 Difference]: With dead ends: 65 [2022-01-10 04:03:35,663 INFO L226 Difference]: Without dead ends: 45 [2022-01-10 04:03:35,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2022-01-10 04:03:35,664 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 94 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 04:03:35,665 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 04:03:35,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-10 04:03:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2022-01-10 04:03:35,672 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 04:03:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2022-01-10 04:03:35,673 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2022-01-10 04:03:35,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:35,673 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2022-01-10 04:03:35,673 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 04:03:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2022-01-10 04:03:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 04:03:35,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:35,674 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 04:03:35,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 04:03:35,876 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 04:03:35,876 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:35,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 3 times [2022-01-10 04:03:35,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:35,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689189399] [2022-01-10 04:03:35,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 04:03:35,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:35,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:35,878 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 04:03:35,879 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 04:03:36,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 04:03:36,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:36,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 04:03:36,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:36,379 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 04:03:36,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:36,394 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 04:03:36,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,447 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 04:03:36,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,526 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 04:03:36,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:36,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:36,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:03:36,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,642 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 04:03:36,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:36,815 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 107 treesize of output 101 [2022-01-10 04:03:38,277 INFO L353 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-01-10 04:03:38,278 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 04:03:38,327 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 04:03:38,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:49,620 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 04:03:49,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:49,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689189399] [2022-01-10 04:03:49,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689189399] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:49,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:49,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2022-01-10 04:03:49,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866782017] [2022-01-10 04:03:49,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:49,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-10 04:03:49,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:49,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-10 04:03:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-01-10 04:03:49,622 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 04:03:54,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:54,702 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-01-10 04:03:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 04:03:54,702 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 04:03:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:54,703 INFO L225 Difference]: With dead ends: 66 [2022-01-10 04:03:54,703 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 04:03:54,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-01-10 04:03:54,704 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:54,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 101 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 120 Unchecked, 1.1s Time] [2022-01-10 04:03:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 04:03:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-01-10 04:03:54,710 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 04:03:54,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-01-10 04:03:54,711 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 24 [2022-01-10 04:03:54,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:54,711 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-01-10 04:03:54,711 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 04:03:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-01-10 04:03:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 04:03:54,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:54,712 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:03:54,724 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 04:03:54,912 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 04:03:54,912 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1983767408, now seen corresponding path program 4 times [2022-01-10 04:03:54,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:54,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127427774] [2022-01-10 04:03:54,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 04:03:54,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:54,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:54,914 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 04:03:54,915 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 04:03:55,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 04:03:55,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 04:03:55,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:55,360 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 04:03:55,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:03:55,815 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 04:03:55,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:03:55,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127427774] [2022-01-10 04:03:55,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127427774] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:03:55,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:03:55,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2022-01-10 04:03:55,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207685267] [2022-01-10 04:03:55,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:03:55,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 04:03:55,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:03:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 04:03:55,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-01-10 04:03:55,816 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 04:03:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:03:58,849 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2022-01-10 04:03:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-10 04:03:58,854 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 04:03:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:03:58,855 INFO L225 Difference]: With dead ends: 109 [2022-01-10 04:03:58,855 INFO L226 Difference]: Without dead ends: 97 [2022-01-10 04:03:58,856 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 04:03:58,856 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 289 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:03:58,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 97 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 04:03:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-10 04:03:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2022-01-10 04:03:58,865 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 04:03:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-01-10 04:03:58,866 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 26 [2022-01-10 04:03:58,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:03:58,866 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-01-10 04:03:58,866 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 04:03:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-01-10 04:03:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 04:03:58,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:03:58,867 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 04:03:58,876 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 04:03:59,074 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 04:03:59,074 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:03:59,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:03:59,074 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 4 times [2022-01-10 04:03:59,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:03:59,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187279902] [2022-01-10 04:03:59,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 04:03:59,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:03:59,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:03:59,076 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 04:03:59,077 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 04:03:59,536 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 04:03:59,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:03:59,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 04:03:59,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:03:59,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,605 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:59,605 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 04:03:59,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:03:59,788 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:03:59,790 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 04:04:00,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:04:00,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:04:00,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:04:00,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:04:00,079 INFO L353 Elim1Store]: treesize reduction 63, result has 33.7 percent of original size [2022-01-10 04:04:00,079 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 04:04:00,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:04:00,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:04:00,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:04:00,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:04:00,576 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-01-10 04:04:00,576 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 04:04:05,783 INFO L353 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2022-01-10 04:04:05,784 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 04:04:05,942 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 04:04:05,943 INFO L328 TraceCheckSpWp]: Computing backward predicates...