/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/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:11:41,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:11:41,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:11:41,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:11:41,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:11:41,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:11:41,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:11:41,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:11:41,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:11:41,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:11:41,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:11:41,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:11:41,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:11:41,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:11:41,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:11:41,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:11:41,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:11:41,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:11:41,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:11:41,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:11:41,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:11:41,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:11:41,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:11:41,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:11:41,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:11:41,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:11:41,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:11:41,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:11:41,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:11:41,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:11:41,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:11:41,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:11:41,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:11:41,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:11:41,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:11:41,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:11:41,824 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 08:11:41,852 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:11:41,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:11:41,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:11:41,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:11:41,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:11:41,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:11:41,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:11:41,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:11:41,854 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:11:41,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:11:41,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:11:41,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:11:41,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:11:41,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:11:41,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:11:41,855 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:11:41,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:11:41,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:11:41,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:11:41,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:11:41,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:11:41,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:11:41,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:11:41,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:11:41,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:11:41,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:11:41,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:11:41,857 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:11:41,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:11:41,857 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:11:41,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:11:41,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:11:41,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:11:41,857 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:11:42,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:11:42,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:11:42,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:11:42,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:11:42,083 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:11:42,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c [2022-01-10 08:11:42,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c71a5ee/b5f67d76c9a54abb965898e6740658f2/FLAG1da61e621 [2022-01-10 08:11:42,707 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:11:42,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c [2022-01-10 08:11:42,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c71a5ee/b5f67d76c9a54abb965898e6740658f2/FLAG1da61e621 [2022-01-10 08:11:42,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c71a5ee/b5f67d76c9a54abb965898e6740658f2 [2022-01-10 08:11:42,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:11:42,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:11:42,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:11:42,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:11:42,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:11:42,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3eea4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42, skipping insertion in model container [2022-01-10 08:11:42,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:11:43,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:11:43,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c[20463,20476] [2022-01-10 08:11:43,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c[28211,28224] [2022-01-10 08:11:43,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:11:43,860 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:11:43,897 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c[20463,20476] [2022-01-10 08:11:43,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c[28211,28224] [2022-01-10 08:11:44,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:11:44,207 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:11:44,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44 WrapperNode [2022-01-10 08:11:44,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:11:44,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:11:44,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:11:44,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:11:44,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,388 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5180 [2022-01-10 08:11:44,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:11:44,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:11:44,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:11:44,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:11:44,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:11:44,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:11:44,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:11:44,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:11:44,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (1/1) ... [2022-01-10 08:11:44,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:11:44,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:11:44,680 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 08:11:44,684 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 08:11:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:11:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:11:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:11:44,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:11:44,840 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:11:44,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:12:07,664 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:12:07,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:12:07,681 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:12:07,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:07 BoogieIcfgContainer [2022-01-10 08:12:07,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:12:07,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:12:07,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:12:07,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:12:07,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:11:42" (1/3) ... [2022-01-10 08:12:07,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f879535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:12:07, skipping insertion in model container [2022-01-10 08:12:07,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:44" (2/3) ... [2022-01-10 08:12:07,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f879535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:12:07, skipping insertion in model container [2022-01-10 08:12:07,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:07" (3/3) ... [2022-01-10 08:12:07,690 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c [2022-01-10 08:12:07,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:12:07,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:12:07,730 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:12:07,735 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 08:12:07,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:12:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 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 08:12:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 08:12:07,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:07,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:07,771 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:07,778 INFO L85 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2022-01-10 08:12:07,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:07,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65201186] [2022-01-10 08:12:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:07,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:07,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:07,789 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 08:12:07,790 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 08:12:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:07,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 08:12:07,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:07,978 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 08:12:07,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:07,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:07,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65201186] [2022-01-10 08:12:07,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65201186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:07,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:07,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:12:07,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188447237] [2022-01-10 08:12:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:07,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:12:07,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:08,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:12:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:12:08,005 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 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 21.0) internal successors, (42), 2 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 08:12:08,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:08,062 INFO L93 Difference]: Finished difference Result 1832 states and 3464 transitions. [2022-01-10 08:12:08,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:12:08,063 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 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) Word has length 42 [2022-01-10 08:12:08,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:08,076 INFO L225 Difference]: With dead ends: 1832 [2022-01-10 08:12:08,076 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 08:12:08,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 41 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 08:12:08,084 INFO L933 BasicCegarLoop]: 1720 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, 1720 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 08:12:08,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 08:12:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 08:12:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8869863013698631) internal successors, (1653), 877 states have internal predecessors, (1653), 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 08:12:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1653 transitions. [2022-01-10 08:12:08,152 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1653 transitions. Word has length 42 [2022-01-10 08:12:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:08,153 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1653 transitions. [2022-01-10 08:12:08,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 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 08:12:08,153 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1653 transitions. [2022-01-10 08:12:08,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 08:12:08,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:08,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:08,165 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 08:12:08,362 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 08:12:08,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:08,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:08,366 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2022-01-10 08:12:08,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:08,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156345963] [2022-01-10 08:12:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:08,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:08,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:08,369 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 08:12:08,371 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 08:12:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:08,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:12:08,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:08,588 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 08:12:08,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:08,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:08,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156345963] [2022-01-10 08:12:08,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156345963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:08,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:08,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:12:08,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902618342] [2022-01-10 08:12:08,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:08,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:12:08,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:08,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:12:08,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:12:08,591 INFO L87 Difference]: Start difference. First operand 878 states and 1653 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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 08:12:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:08,747 INFO L93 Difference]: Finished difference Result 950 states and 1765 transitions. [2022-01-10 08:12:08,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:12:08,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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) Word has length 42 [2022-01-10 08:12:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:08,751 INFO L225 Difference]: With dead ends: 950 [2022-01-10 08:12:08,751 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 08:12:08,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:12:08,753 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:08,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:12:08,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 08:12:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 08:12:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8299086757990868) internal successors, (1603), 877 states have internal predecessors, (1603), 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 08:12:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1603 transitions. [2022-01-10 08:12:08,825 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1603 transitions. Word has length 42 [2022-01-10 08:12:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:08,826 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1603 transitions. [2022-01-10 08:12:08,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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 08:12:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1603 transitions. [2022-01-10 08:12:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 08:12:08,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:08,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:08,836 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 08:12:09,034 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 08:12:09,035 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:09,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:09,035 INFO L85 PathProgramCache]: Analyzing trace with hash -131611855, now seen corresponding path program 1 times [2022-01-10 08:12:09,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:09,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801747646] [2022-01-10 08:12:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:09,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:09,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:09,039 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 08:12:09,041 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 08:12:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:09,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:09,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:09,342 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 08:12:09,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:09,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:09,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801747646] [2022-01-10 08:12:09,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801747646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:09,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:09,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:12:09,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693031470] [2022-01-10 08:12:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:09,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:09,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:09,344 INFO L87 Difference]: Start difference. First operand 878 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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 08:12:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:42,450 INFO L93 Difference]: Finished difference Result 2382 states and 4476 transitions. [2022-01-10 08:12:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:42,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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 67 [2022-01-10 08:12:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:42,457 INFO L225 Difference]: With dead ends: 2382 [2022-01-10 08:12:42,457 INFO L226 Difference]: Without dead ends: 1629 [2022-01-10 08:12:42,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:42,460 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 893 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:42,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 711 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 32.9s Time] [2022-01-10 08:12:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-01-10 08:12:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2022-01-10 08:12:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.5427166564228643) internal successors, (2510), 1628 states have internal predecessors, (2510), 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 08:12:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2510 transitions. [2022-01-10 08:12:42,493 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2510 transitions. Word has length 67 [2022-01-10 08:12:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:42,493 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2510 transitions. [2022-01-10 08:12:42,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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 08:12:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2510 transitions. [2022-01-10 08:12:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:42,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:42,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:42,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 08:12:42,708 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 08:12:42,708 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:42,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2022-01-10 08:12:42,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:42,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331323023] [2022-01-10 08:12:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:42,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:42,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:42,711 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 08:12:42,712 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 08:12:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:42,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:42,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:43,018 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 08:12:43,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:43,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:43,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331323023] [2022-01-10 08:12:43,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331323023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:43,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:43,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:43,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347478283] [2022-01-10 08:12:43,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:43,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:43,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:43,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:43,026 INFO L87 Difference]: Start difference. First operand 1629 states and 2510 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:43,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:43,074 INFO L93 Difference]: Finished difference Result 1759 states and 2716 transitions. [2022-01-10 08:12:43,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:43,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 08:12:43,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:43,080 INFO L225 Difference]: With dead ends: 1759 [2022-01-10 08:12:43,081 INFO L226 Difference]: Without dead ends: 1691 [2022-01-10 08:12:43,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:43,086 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:43,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2022-01-10 08:12:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2022-01-10 08:12:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.5447540011855365) internal successors, (2606), 1688 states have internal predecessors, (2606), 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 08:12:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2606 transitions. [2022-01-10 08:12:43,110 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2606 transitions. Word has length 91 [2022-01-10 08:12:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:43,111 INFO L470 AbstractCegarLoop]: Abstraction has 1689 states and 2606 transitions. [2022-01-10 08:12:43,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2606 transitions. [2022-01-10 08:12:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:43,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:43,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:43,122 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 08:12:43,320 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 08:12:43,321 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2022-01-10 08:12:43,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:43,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62086095] [2022-01-10 08:12:43,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:43,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:43,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:43,324 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 08:12:43,326 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 08:12:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:43,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:12:43,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:44,176 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 08:12:44,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:44,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:44,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62086095] [2022-01-10 08:12:44,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62086095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:44,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:44,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:12:44,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330621181] [2022-01-10 08:12:44,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:44,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:12:44,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:44,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:12:44,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:12:44,178 INFO L87 Difference]: Start difference. First operand 1689 states and 2606 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 08:12:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:44,286 INFO L93 Difference]: Finished difference Result 1820 states and 2814 transitions. [2022-01-10 08:12:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:12:44,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 91 [2022-01-10 08:12:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:44,292 INFO L225 Difference]: With dead ends: 1820 [2022-01-10 08:12:44,292 INFO L226 Difference]: Without dead ends: 1692 [2022-01-10 08:12:44,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:12:44,293 INFO L933 BasicCegarLoop]: 1598 mSDtfsCounter, 1492 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:44,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 3233 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-01-10 08:12:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-01-10 08:12:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1692. [2022-01-10 08:12:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1690 states have (on average 1.5437869822485206) internal successors, (2609), 1691 states have internal predecessors, (2609), 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 08:12:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2609 transitions. [2022-01-10 08:12:44,313 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2609 transitions. Word has length 91 [2022-01-10 08:12:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:44,313 INFO L470 AbstractCegarLoop]: Abstraction has 1692 states and 2609 transitions. [2022-01-10 08:12:44,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 08:12:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2609 transitions. [2022-01-10 08:12:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:44,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:44,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:44,321 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 08:12:44,520 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 08:12:44,521 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:44,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1839713322, now seen corresponding path program 1 times [2022-01-10 08:12:44,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:44,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11733022] [2022-01-10 08:12:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:44,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:44,523 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 08:12:44,529 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 08:12:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:44,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:44,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:44,823 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 08:12:44,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:44,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:44,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11733022] [2022-01-10 08:12:44,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11733022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:44,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:44,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:44,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689738003] [2022-01-10 08:12:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:44,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:44,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:44,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:44,825 INFO L87 Difference]: Start difference. First operand 1692 states and 2609 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:44,855 INFO L93 Difference]: Finished difference Result 1936 states and 2997 transitions. [2022-01-10 08:12:44,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:44,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 08:12:44,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:44,861 INFO L225 Difference]: With dead ends: 1936 [2022-01-10 08:12:44,861 INFO L226 Difference]: Without dead ends: 1808 [2022-01-10 08:12:44,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:44,883 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:44,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:44,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-01-10 08:12:44,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1806. [2022-01-10 08:12:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1804 states have (on average 1.5465631929046564) internal successors, (2790), 1805 states have internal predecessors, (2790), 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 08:12:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2790 transitions. [2022-01-10 08:12:44,910 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2790 transitions. Word has length 91 [2022-01-10 08:12:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:44,911 INFO L470 AbstractCegarLoop]: Abstraction has 1806 states and 2790 transitions. [2022-01-10 08:12:44,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2790 transitions. [2022-01-10 08:12:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:44,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:44,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:44,921 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 08:12:45,119 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 08:12:45,119 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:45,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1204348682, now seen corresponding path program 1 times [2022-01-10 08:12:45,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:45,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356959898] [2022-01-10 08:12:45,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:45,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:45,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:45,121 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 08:12:45,123 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 08:12:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:45,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:12:45,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:45,702 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 08:12:45,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:45,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:45,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356959898] [2022-01-10 08:12:45,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356959898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:45,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:45,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:12:45,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984734108] [2022-01-10 08:12:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:45,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:12:45,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:45,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:12:45,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:12:45,704 INFO L87 Difference]: Start difference. First operand 1806 states and 2790 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 08:12:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:45,795 INFO L93 Difference]: Finished difference Result 2052 states and 3180 transitions. [2022-01-10 08:12:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:12:45,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 91 [2022-01-10 08:12:45,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:45,813 INFO L225 Difference]: With dead ends: 2052 [2022-01-10 08:12:45,813 INFO L226 Difference]: Without dead ends: 1810 [2022-01-10 08:12:45,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:12:45,827 INFO L933 BasicCegarLoop]: 1596 mSDtfsCounter, 1492 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:45,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 4681 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-01-10 08:12:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-01-10 08:12:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2022-01-10 08:12:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1808 states have (on average 1.545353982300885) internal successors, (2794), 1809 states have internal predecessors, (2794), 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 08:12:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2794 transitions. [2022-01-10 08:12:45,857 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2794 transitions. Word has length 91 [2022-01-10 08:12:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:45,859 INFO L470 AbstractCegarLoop]: Abstraction has 1810 states and 2794 transitions. [2022-01-10 08:12:45,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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 08:12:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2794 transitions. [2022-01-10 08:12:45,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:45,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:45,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:45,885 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 08:12:46,072 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 08:12:46,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1713821772, now seen corresponding path program 1 times [2022-01-10 08:12:46,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:46,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956354186] [2022-01-10 08:12:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:46,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:46,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:46,075 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 08:12:46,110 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 08:12:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:46,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:46,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:46,361 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 08:12:46,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:46,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:46,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956354186] [2022-01-10 08:12:46,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956354186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:46,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:46,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:46,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218122799] [2022-01-10 08:12:46,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:46,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:46,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:46,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:46,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:46,363 INFO L87 Difference]: Start difference. First operand 1810 states and 2794 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:46,408 INFO L93 Difference]: Finished difference Result 2270 states and 3524 transitions. [2022-01-10 08:12:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:46,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 08:12:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:46,414 INFO L225 Difference]: With dead ends: 2270 [2022-01-10 08:12:46,414 INFO L226 Difference]: Without dead ends: 2028 [2022-01-10 08:12:46,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:46,418 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:46,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:46,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-01-10 08:12:46,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2026. [2022-01-10 08:12:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 2024 states have (on average 1.5484189723320159) internal successors, (3134), 2025 states have internal predecessors, (3134), 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 08:12:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 3134 transitions. [2022-01-10 08:12:46,447 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 3134 transitions. Word has length 91 [2022-01-10 08:12:46,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:46,447 INFO L470 AbstractCegarLoop]: Abstraction has 2026 states and 3134 transitions. [2022-01-10 08:12:46,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 3134 transitions. [2022-01-10 08:12:46,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:46,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:46,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:46,470 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 08:12:46,654 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 08:12:46,655 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:46,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash 968239042, now seen corresponding path program 1 times [2022-01-10 08:12:46,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:46,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475591684] [2022-01-10 08:12:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:46,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:46,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:46,657 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 08:12:46,658 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 08:12:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:46,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:46,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:46,885 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 08:12:46,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:46,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:46,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475591684] [2022-01-10 08:12:46,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475591684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:46,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:46,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:46,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083285471] [2022-01-10 08:12:46,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:46,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:46,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:46,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:46,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:46,887 INFO L87 Difference]: Start difference. First operand 2026 states and 3134 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:46,916 INFO L93 Difference]: Finished difference Result 2894 states and 4504 transitions. [2022-01-10 08:12:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:46,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 08:12:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:46,923 INFO L225 Difference]: With dead ends: 2894 [2022-01-10 08:12:46,923 INFO L226 Difference]: Without dead ends: 2436 [2022-01-10 08:12:46,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:46,926 INFO L933 BasicCegarLoop]: 1684 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:46,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:46,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2022-01-10 08:12:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2434. [2022-01-10 08:12:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 2432 states have (on average 1.5501644736842106) internal successors, (3770), 2433 states have internal predecessors, (3770), 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 08:12:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3770 transitions. [2022-01-10 08:12:46,960 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3770 transitions. Word has length 91 [2022-01-10 08:12:46,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:46,961 INFO L470 AbstractCegarLoop]: Abstraction has 2434 states and 3770 transitions. [2022-01-10 08:12:46,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3770 transitions. [2022-01-10 08:12:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:46,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:46,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:46,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:47,168 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 08:12:47,169 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:47,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:47,169 INFO L85 PathProgramCache]: Analyzing trace with hash -971791816, now seen corresponding path program 1 times [2022-01-10 08:12:47,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:47,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280714419] [2022-01-10 08:12:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:47,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:47,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:47,184 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 08:12:47,219 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 08:12:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:47,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:47,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:47,408 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 08:12:47,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:47,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:47,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280714419] [2022-01-10 08:12:47,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280714419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:47,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:47,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:47,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933107780] [2022-01-10 08:12:47,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:47,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:47,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:47,410 INFO L87 Difference]: Start difference. First operand 2434 states and 3770 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:47,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:47,448 INFO L93 Difference]: Finished difference Result 4070 states and 6332 transitions. [2022-01-10 08:12:47,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:47,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 08:12:47,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:47,457 INFO L225 Difference]: With dead ends: 4070 [2022-01-10 08:12:47,457 INFO L226 Difference]: Without dead ends: 3204 [2022-01-10 08:12:47,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:47,459 INFO L933 BasicCegarLoop]: 1679 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:47,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:47,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2022-01-10 08:12:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3202. [2022-01-10 08:12:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3202 states, 3200 states have (on average 1.548125) internal successors, (4954), 3201 states have internal predecessors, (4954), 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 08:12:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 4954 transitions. [2022-01-10 08:12:47,546 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 4954 transitions. Word has length 91 [2022-01-10 08:12:47,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:47,546 INFO L470 AbstractCegarLoop]: Abstraction has 3202 states and 4954 transitions. [2022-01-10 08:12:47,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:12:47,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 4954 transitions. [2022-01-10 08:12:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:47,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:47,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:47,569 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 08:12:47,754 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 08:12:47,754 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:47,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1728890798, now seen corresponding path program 1 times [2022-01-10 08:12:47,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:47,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601252410] [2022-01-10 08:12:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:47,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:47,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:47,756 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 08:12:47,758 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 08:12:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:47,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:12:47,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:49,485 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 08:12:49,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:49,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:49,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601252410] [2022-01-10 08:12:49,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601252410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:49,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:49,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 08:12:49,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527564673] [2022-01-10 08:12:49,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:49,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 08:12:49,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:49,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 08:12:49,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 08:12:49,486 INFO L87 Difference]: Start difference. First operand 3202 states and 4954 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 08:12:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:49,893 INFO L93 Difference]: Finished difference Result 16274 states and 25314 transitions. [2022-01-10 08:12:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 08:12:49,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 91 [2022-01-10 08:12:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:49,935 INFO L225 Difference]: With dead ends: 16274 [2022-01-10 08:12:49,935 INFO L226 Difference]: Without dead ends: 14640 [2022-01-10 08:12:49,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 08:12:49,943 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 5865 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5865 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:49,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5865 Valid, 2390 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:12:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14640 states. [2022-01-10 08:12:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14640 to 6466. [2022-01-10 08:12:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6466 states, 6464 states have (on average 1.5386757425742574) internal successors, (9946), 6465 states have internal predecessors, (9946), 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 08:12:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6466 states to 6466 states and 9946 transitions. [2022-01-10 08:12:50,187 INFO L78 Accepts]: Start accepts. Automaton has 6466 states and 9946 transitions. Word has length 91 [2022-01-10 08:12:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:50,187 INFO L470 AbstractCegarLoop]: Abstraction has 6466 states and 9946 transitions. [2022-01-10 08:12:50,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 08:12:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 6466 states and 9946 transitions. [2022-01-10 08:12:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 08:12:50,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:50,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:50,196 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 08:12:50,396 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 08:12:50,396 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:50,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2103976578, now seen corresponding path program 1 times [2022-01-10 08:12:50,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:50,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087563927] [2022-01-10 08:12:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:50,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:50,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:50,398 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 08:12:50,400 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 08:12:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:50,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:50,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:50,665 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 08:12:50,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:50,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:50,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087563927] [2022-01-10 08:12:50,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087563927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:50,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:50,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:50,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065248565] [2022-01-10 08:12:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:50,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:50,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:50,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:50,667 INFO L87 Difference]: Start difference. First operand 6466 states and 9946 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 08:12:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:50,794 INFO L93 Difference]: Finished difference Result 13702 states and 21068 transitions. [2022-01-10 08:12:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:50,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 08:12:50,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:50,809 INFO L225 Difference]: With dead ends: 13702 [2022-01-10 08:12:50,809 INFO L226 Difference]: Without dead ends: 8804 [2022-01-10 08:12:50,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:50,817 INFO L933 BasicCegarLoop]: 1633 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:50,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1736 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:50,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8804 states. [2022-01-10 08:12:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8804 to 8802. [2022-01-10 08:12:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8802 states, 8800 states have (on average 1.5284090909090908) internal successors, (13450), 8801 states have internal predecessors, (13450), 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 08:12:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8802 states to 8802 states and 13450 transitions. [2022-01-10 08:12:51,056 INFO L78 Accepts]: Start accepts. Automaton has 8802 states and 13450 transitions. Word has length 93 [2022-01-10 08:12:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:51,056 INFO L470 AbstractCegarLoop]: Abstraction has 8802 states and 13450 transitions. [2022-01-10 08:12:51,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 08:12:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 8802 states and 13450 transitions. [2022-01-10 08:12:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 08:12:51,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:51,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:51,080 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 08:12:51,263 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 08:12:51,264 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:51,264 INFO L85 PathProgramCache]: Analyzing trace with hash -248568990, now seen corresponding path program 1 times [2022-01-10 08:12:51,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:51,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029483985] [2022-01-10 08:12:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:51,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:51,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:51,266 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 08:12:51,268 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 08:12:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:51,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:51,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:51,470 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 08:12:51,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:51,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:51,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029483985] [2022-01-10 08:12:51,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029483985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:51,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:51,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:51,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080369975] [2022-01-10 08:12:51,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:51,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:51,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:51,472 INFO L87 Difference]: Start difference. First operand 8802 states and 13450 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 08:12:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:51,679 INFO L93 Difference]: Finished difference Result 22406 states and 34092 transitions. [2022-01-10 08:12:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:51,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 08:12:51,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:51,708 INFO L225 Difference]: With dead ends: 22406 [2022-01-10 08:12:51,708 INFO L226 Difference]: Without dead ends: 15172 [2022-01-10 08:12:51,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:51,722 INFO L933 BasicCegarLoop]: 1661 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:51,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15172 states. [2022-01-10 08:12:52,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15172 to 15170. [2022-01-10 08:12:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15170 states, 15168 states have (on average 1.510152953586498) internal successors, (22906), 15169 states have internal predecessors, (22906), 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 08:12:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 22906 transitions. [2022-01-10 08:12:52,136 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 22906 transitions. Word has length 93 [2022-01-10 08:12:52,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:52,136 INFO L470 AbstractCegarLoop]: Abstraction has 15170 states and 22906 transitions. [2022-01-10 08:12:52,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 08:12:52,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 22906 transitions. [2022-01-10 08:12:52,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 08:12:52,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:52,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:52,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:52,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:52,344 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash 998938626, now seen corresponding path program 1 times [2022-01-10 08:12:52,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:52,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310439574] [2022-01-10 08:12:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:52,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:52,346 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:52,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 08:12:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:52,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:52,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:52,577 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 08:12:52,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:52,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:52,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310439574] [2022-01-10 08:12:52,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310439574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:52,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:52,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:52,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774922528] [2022-01-10 08:12:52,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:52,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:52,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:52,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:52,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:52,579 INFO L87 Difference]: Start difference. First operand 15170 states and 22906 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 08:12:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:53,044 INFO L93 Difference]: Finished difference Result 40646 states and 61020 transitions. [2022-01-10 08:12:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:53,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 08:12:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:53,142 INFO L225 Difference]: With dead ends: 40646 [2022-01-10 08:12:53,142 INFO L226 Difference]: Without dead ends: 27044 [2022-01-10 08:12:53,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:53,162 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:53,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27044 states. [2022-01-10 08:12:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27044 to 27042. [2022-01-10 08:12:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27042 states, 27040 states have (on average 1.4879437869822485) internal successors, (40234), 27041 states have internal predecessors, (40234), 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 08:12:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27042 states to 27042 states and 40234 transitions. [2022-01-10 08:12:53,914 INFO L78 Accepts]: Start accepts. Automaton has 27042 states and 40234 transitions. Word has length 93 [2022-01-10 08:12:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:53,915 INFO L470 AbstractCegarLoop]: Abstraction has 27042 states and 40234 transitions. [2022-01-10 08:12:53,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 08:12:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27042 states and 40234 transitions. [2022-01-10 08:12:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 08:12:53,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:53,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:53,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:54,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:54,123 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:54,123 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2022-01-10 08:12:54,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:54,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078377226] [2022-01-10 08:12:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:54,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:54,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:54,125 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:54,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process