/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.4.ufo.BOUNDED-8.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:03:47,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:03:47,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:03:47,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:03:47,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:03:47,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:03:47,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:03:47,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:03:47,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:03:47,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:03:47,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:03:47,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:03:47,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:03:47,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:03:47,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:03:47,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:03:47,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:03:47,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:03:47,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:03:47,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:03:47,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:03:47,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:03:47,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:03:47,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:03:47,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:03:47,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:03:47,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:03:47,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:03:47,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:03:47,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:03:47,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:03:47,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:03:47,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:03:47,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:03:47,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:03:47,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:03:47,855 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 08:03:47,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:03:47,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:03:47,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:03:47,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:03:47,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:03:47,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:03:47,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:03:47,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:03:47,877 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:03:47,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:03:47,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:03:47,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:03:47,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:03:47,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:03:47,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:03:47,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:03:47,878 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:03:47,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:03:47,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:03:47,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:03:47,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:03:47,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:03:47,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:03:47,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:03:47,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:03:47,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:03:47,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:03:47,880 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:03:47,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:03:47,880 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:03:47,880 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:03:47,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:03:47,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:03:47,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:03:48,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:03:48,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:03:48,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:03:48,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:03:48,143 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:03:48,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2022-01-10 08:03:48,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b755fedbf/567e9e1d4c024857a3d026c6cd7f6ddc/FLAGf6cf7bc5a [2022-01-10 08:03:48,945 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:03:48,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2022-01-10 08:03:48,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b755fedbf/567e9e1d4c024857a3d026c6cd7f6ddc/FLAGf6cf7bc5a [2022-01-10 08:03:49,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b755fedbf/567e9e1d4c024857a3d026c6cd7f6ddc [2022-01-10 08:03:49,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:03:49,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:03:49,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:03:49,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:03:49,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:03:49,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:03:49" (1/1) ... [2022-01-10 08:03:49,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e08d2d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:49, skipping insertion in model container [2022-01-10 08:03:49,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:03:49" (1/1) ... [2022-01-10 08:03:49,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:03:49,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:03:49,496 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.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2022-01-10 08:03:49,559 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.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2022-01-10 08:03:50,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:03:50,239 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:03:50,282 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.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2022-01-10 08:03:50,331 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.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2022-01-10 08:03:50,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:03:50,730 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:03:50,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50 WrapperNode [2022-01-10 08:03:50,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:03:50,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:03:50,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:03:50,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:03:50,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:50,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:50,980 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5009 [2022-01-10 08:03:50,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:03:50,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:03:50,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:03:50,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:03:50,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:50,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:51,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:51,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:51,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:51,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:51,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:51,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:03:51,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:03:51,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:03:51,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:03:51,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (1/1) ... [2022-01-10 08:03:51,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:03:51,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:03:51,341 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 08:03:51,369 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 08:03:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:03:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:03:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:03:51,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:03:51,527 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:03:51,528 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:04:16,634 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:04:16,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:04:16,654 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:04:16,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:04:16 BoogieIcfgContainer [2022-01-10 08:04:16,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:04:16,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:04:16,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:04:16,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:04:16,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:03:49" (1/3) ... [2022-01-10 08:04:16,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13499278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:04:16, skipping insertion in model container [2022-01-10 08:04:16,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:03:50" (2/3) ... [2022-01-10 08:04:16,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13499278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:04:16, skipping insertion in model container [2022-01-10 08:04:16,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:04:16" (3/3) ... [2022-01-10 08:04:16,666 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2022-01-10 08:04:16,670 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:04:16,671 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:04:16,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:04:16,723 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 08:04:16,723 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:04:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 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 08:04:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 08:04:16,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:16,765 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] [2022-01-10 08:04:16,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:16,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:16,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1675876582, now seen corresponding path program 1 times [2022-01-10 08:04:16,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:16,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998756168] [2022-01-10 08:04:16,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:16,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:16,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:16,787 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 08:04:16,789 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 08:04:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:16,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 08:04:16,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:17,056 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 08:04:17,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:17,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:17,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998756168] [2022-01-10 08:04:17,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998756168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:17,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:17,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:04:17,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649456990] [2022-01-10 08:04:17,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:17,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:04:17,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:04:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:04:17,092 INFO L87 Difference]: Start difference. First operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:17,196 INFO L93 Difference]: Finished difference Result 1757 states and 3332 transitions. [2022-01-10 08:04:17,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:04:17,198 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-10 08:04:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:17,229 INFO L225 Difference]: With dead ends: 1757 [2022-01-10 08:04:17,229 INFO L226 Difference]: Without dead ends: 827 [2022-01-10 08:04:17,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 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 08:04:17,241 INFO L933 BasicCegarLoop]: 1627 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, 1627 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 08:04:17,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:04:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-01-10 08:04:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2022-01-10 08:04:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 825 states have (on average 1.8909090909090909) internal successors, (1560), 826 states have internal predecessors, (1560), 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 08:04:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1560 transitions. [2022-01-10 08:04:17,349 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1560 transitions. Word has length 30 [2022-01-10 08:04:17,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:17,349 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1560 transitions. [2022-01-10 08:04:17,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1560 transitions. [2022-01-10 08:04:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 08:04:17,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:17,352 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] [2022-01-10 08:04:17,365 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 08:04:17,562 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 08:04:17,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:17,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:17,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1541863076, now seen corresponding path program 1 times [2022-01-10 08:04:17,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:17,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158131971] [2022-01-10 08:04:17,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:17,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:17,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:17,568 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 08:04:17,570 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 08:04:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:17,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:04:17,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:17,787 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 08:04:17,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:17,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:17,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158131971] [2022-01-10 08:04:17,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158131971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:17,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:17,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:04:17,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150445526] [2022-01-10 08:04:17,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:17,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:04:17,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:04:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:04:17,791 INFO L87 Difference]: Start difference. First operand 827 states and 1560 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:17,933 INFO L93 Difference]: Finished difference Result 919 states and 1702 transitions. [2022-01-10 08:04:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:04:17,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-10 08:04:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:17,940 INFO L225 Difference]: With dead ends: 919 [2022-01-10 08:04:17,940 INFO L226 Difference]: Without dead ends: 871 [2022-01-10 08:04:17,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:04:17,945 INFO L933 BasicCegarLoop]: 1556 mSDtfsCounter, 71 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:04:17,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 6196 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:04:17,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-01-10 08:04:17,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 827. [2022-01-10 08:04:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 825 states have (on average 1.863030303030303) internal successors, (1537), 826 states have internal predecessors, (1537), 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 08:04:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1537 transitions. [2022-01-10 08:04:17,971 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1537 transitions. Word has length 30 [2022-01-10 08:04:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:17,972 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1537 transitions. [2022-01-10 08:04:17,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1537 transitions. [2022-01-10 08:04:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:04:17,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:17,975 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] [2022-01-10 08:04:17,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:04:18,184 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 08:04:18,184 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:18,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:18,185 INFO L85 PathProgramCache]: Analyzing trace with hash 159296799, now seen corresponding path program 1 times [2022-01-10 08:04:18,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:18,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696337204] [2022-01-10 08:04:18,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:18,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:18,188 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 08:04:18,190 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 08:04:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:18,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:04:18,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:18,483 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 08:04:18,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:18,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:18,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696337204] [2022-01-10 08:04:18,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696337204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:18,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:18,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:04:18,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364602490] [2022-01-10 08:04:18,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:18,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:04:18,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:18,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:04:18,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:04:18,486 INFO L87 Difference]: Start difference. First operand 827 states and 1537 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:18,529 INFO L93 Difference]: Finished difference Result 909 states and 1665 transitions. [2022-01-10 08:04:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:04:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 08:04:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:18,534 INFO L225 Difference]: With dead ends: 909 [2022-01-10 08:04:18,534 INFO L226 Difference]: Without dead ends: 865 [2022-01-10 08:04:18,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 08:04:18,538 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 1498 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1659 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 08:04:18,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1659 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:04:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-01-10 08:04:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 863. [2022-01-10 08:04:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8513356562137049) internal successors, (1594), 862 states have internal predecessors, (1594), 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 08:04:18,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1594 transitions. [2022-01-10 08:04:18,565 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1594 transitions. Word has length 52 [2022-01-10 08:04:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:18,565 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 1594 transitions. [2022-01-10 08:04:18,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1594 transitions. [2022-01-10 08:04:18,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:04:18,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:18,572 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] [2022-01-10 08:04:18,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:04:18,779 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 08:04:18,780 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:18,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:18,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1780734059, now seen corresponding path program 1 times [2022-01-10 08:04:18,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:18,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233971252] [2022-01-10 08:04:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:18,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:18,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:18,782 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 08:04:18,784 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 08:04:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:18,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:04:18,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:19,019 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 08:04:19,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:19,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:19,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233971252] [2022-01-10 08:04:19,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233971252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:19,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:19,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:04:19,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160534769] [2022-01-10 08:04:19,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:19,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:04:19,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:04:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:04:19,022 INFO L87 Difference]: Start difference. First operand 863 states and 1594 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:19,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:19,065 INFO L93 Difference]: Finished difference Result 1011 states and 1826 transitions. [2022-01-10 08:04:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:04:19,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 08:04:19,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:19,071 INFO L225 Difference]: With dead ends: 1011 [2022-01-10 08:04:19,071 INFO L226 Difference]: Without dead ends: 931 [2022-01-10 08:04:19,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 08:04:19,077 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1658 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 08:04:19,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 1658 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:04:19,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-01-10 08:04:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2022-01-10 08:04:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.8306364617044228) internal successors, (1697), 928 states have internal predecessors, (1697), 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 08:04:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1697 transitions. [2022-01-10 08:04:19,104 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1697 transitions. Word has length 52 [2022-01-10 08:04:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:19,105 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 1697 transitions. [2022-01-10 08:04:19,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1697 transitions. [2022-01-10 08:04:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:04:19,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:19,107 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] [2022-01-10 08:04:19,122 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 08:04:19,316 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 08:04:19,316 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:19,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash 919948555, now seen corresponding path program 1 times [2022-01-10 08:04:19,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:19,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574005686] [2022-01-10 08:04:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:19,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:19,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:19,320 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 08:04:19,322 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 08:04:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:19,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:04:19,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:19,549 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 08:04:19,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:19,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:19,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574005686] [2022-01-10 08:04:19,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574005686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:19,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:19,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:04:19,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965553941] [2022-01-10 08:04:19,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:19,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:04:19,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:19,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:04:19,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:04:19,552 INFO L87 Difference]: Start difference. First operand 929 states and 1697 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:19,598 INFO L93 Difference]: Finished difference Result 1197 states and 2115 transitions. [2022-01-10 08:04:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:04:19,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 08:04:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:19,605 INFO L225 Difference]: With dead ends: 1197 [2022-01-10 08:04:19,605 INFO L226 Difference]: Without dead ends: 1051 [2022-01-10 08:04:19,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 08:04:19,608 INFO L933 BasicCegarLoop]: 1582 mSDtfsCounter, 1490 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1657 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 08:04:19,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 1657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:04:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-01-10 08:04:19,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1049. [2022-01-10 08:04:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1047 states have (on average 1.7965616045845272) internal successors, (1881), 1048 states have internal predecessors, (1881), 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 08:04:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1881 transitions. [2022-01-10 08:04:19,640 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1881 transitions. Word has length 52 [2022-01-10 08:04:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:19,641 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1881 transitions. [2022-01-10 08:04:19,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:19,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1881 transitions. [2022-01-10 08:04:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:04:19,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:19,643 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] [2022-01-10 08:04:19,654 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 08:04:19,852 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 08:04:19,852 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:19,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:19,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1515907135, now seen corresponding path program 1 times [2022-01-10 08:04:19,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:19,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294377250] [2022-01-10 08:04:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:19,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:19,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:19,855 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 08:04:19,857 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 08:04:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:19,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:04:19,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:20,572 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 08:04:20,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:20,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:20,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294377250] [2022-01-10 08:04:20,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294377250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:20,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:20,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:04:20,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126906936] [2022-01-10 08:04:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:20,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:04:20,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:04:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:04:20,574 INFO L87 Difference]: Start difference. First operand 1049 states and 1881 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:20,691 INFO L93 Difference]: Finished difference Result 1326 states and 2308 transitions. [2022-01-10 08:04:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:04:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 08:04:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:20,696 INFO L225 Difference]: With dead ends: 1326 [2022-01-10 08:04:20,697 INFO L226 Difference]: Without dead ends: 1060 [2022-01-10 08:04:20,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 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 08:04:20,698 INFO L933 BasicCegarLoop]: 1526 mSDtfsCounter, 1458 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:04:20,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 3130 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2022-01-10 08:04:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-01-10 08:04:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1060. [2022-01-10 08:04:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1058 states have (on average 1.7901701323251418) internal successors, (1894), 1059 states have internal predecessors, (1894), 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 08:04:20,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1894 transitions. [2022-01-10 08:04:20,725 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1894 transitions. Word has length 52 [2022-01-10 08:04:20,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:20,725 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1894 transitions. [2022-01-10 08:04:20,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:20,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1894 transitions. [2022-01-10 08:04:20,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:04:20,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:20,726 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] [2022-01-10 08:04:20,737 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 08:04:20,935 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 08:04:20,935 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:20,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1257741697, now seen corresponding path program 1 times [2022-01-10 08:04:20,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:20,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320635126] [2022-01-10 08:04:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:20,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:20,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:20,939 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 08:04:20,941 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 08:04:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:21,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:04:21,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:21,142 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 08:04:21,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:21,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:21,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320635126] [2022-01-10 08:04:21,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320635126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:21,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:21,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:04:21,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081195036] [2022-01-10 08:04:21,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:21,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:04:21,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:21,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:04:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:04:21,145 INFO L87 Difference]: Start difference. First operand 1060 states and 1894 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:21,188 INFO L93 Difference]: Finished difference Result 1544 states and 2640 transitions. [2022-01-10 08:04:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:04:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 08:04:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:21,195 INFO L225 Difference]: With dead ends: 1544 [2022-01-10 08:04:21,195 INFO L226 Difference]: Without dead ends: 1278 [2022-01-10 08:04:21,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 08:04:21,197 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1486 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1656 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 08:04:21,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 1656 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:04:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-01-10 08:04:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1276. [2022-01-10 08:04:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1274 states have (on average 1.7409733124018838) internal successors, (2218), 1275 states have internal predecessors, (2218), 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 08:04:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 2218 transitions. [2022-01-10 08:04:21,231 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 2218 transitions. Word has length 52 [2022-01-10 08:04:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:21,232 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 2218 transitions. [2022-01-10 08:04:21,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:21,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2218 transitions. [2022-01-10 08:04:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:04:21,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:21,239 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] [2022-01-10 08:04:21,248 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 08:04:21,448 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 08:04:21,448 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:21,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1666380469, now seen corresponding path program 1 times [2022-01-10 08:04:21,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:21,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751863715] [2022-01-10 08:04:21,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:21,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:21,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:21,451 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 08:04:21,452 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 08:04:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:21,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:04:21,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:22,112 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 08:04:22,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:22,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:22,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751863715] [2022-01-10 08:04:22,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751863715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:22,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:22,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:04:22,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694488995] [2022-01-10 08:04:22,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:22,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:04:22,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:04:22,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:04:22,114 INFO L87 Difference]: Start difference. First operand 1276 states and 2218 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:22,212 INFO L93 Difference]: Finished difference Result 1762 states and 2960 transitions. [2022-01-10 08:04:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:04:22,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 08:04:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:22,217 INFO L225 Difference]: With dead ends: 1762 [2022-01-10 08:04:22,218 INFO L226 Difference]: Without dead ends: 1280 [2022-01-10 08:04:22,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 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 08:04:22,219 INFO L933 BasicCegarLoop]: 1524 mSDtfsCounter, 2907 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2907 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:04:22,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2907 Valid, 3055 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-01-10 08:04:22,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-01-10 08:04:22,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1280. [2022-01-10 08:04:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1278 states have (on average 1.7386541471048513) internal successors, (2222), 1279 states have internal predecessors, (2222), 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 08:04:22,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 2222 transitions. [2022-01-10 08:04:22,252 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 2222 transitions. Word has length 52 [2022-01-10 08:04:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:22,253 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 2222 transitions. [2022-01-10 08:04:22,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 2222 transitions. [2022-01-10 08:04:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:04:22,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:22,254 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] [2022-01-10 08:04:22,266 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 08:04:22,462 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 08:04:22,463 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1819240201, now seen corresponding path program 1 times [2022-01-10 08:04:22,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:22,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005395760] [2022-01-10 08:04:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:22,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:22,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:22,468 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 08:04:22,471 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 08:04:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:22,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:04:22,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:23,300 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 08:04:23,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:23,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:23,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005395760] [2022-01-10 08:04:23,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005395760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:23,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:23,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:04:23,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161903609] [2022-01-10 08:04:23,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:23,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:04:23,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:04:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:04:23,302 INFO L87 Difference]: Start difference. First operand 1280 states and 2222 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:23,580 INFO L93 Difference]: Finished difference Result 3690 states and 5907 transitions. [2022-01-10 08:04:23,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:04:23,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 08:04:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:23,596 INFO L225 Difference]: With dead ends: 3690 [2022-01-10 08:04:23,596 INFO L226 Difference]: Without dead ends: 3208 [2022-01-10 08:04:23,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:04:23,600 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 3213 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3213 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:04:23,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3213 Valid, 1827 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:04:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2022-01-10 08:04:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 2240. [2022-01-10 08:04:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 2238 states have (on average 1.6291331546023236) internal successors, (3646), 2239 states have internal predecessors, (3646), 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 08:04:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3646 transitions. [2022-01-10 08:04:23,678 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3646 transitions. Word has length 52 [2022-01-10 08:04:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:23,679 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 3646 transitions. [2022-01-10 08:04:23,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3646 transitions. [2022-01-10 08:04:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 08:04:23,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:23,680 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] [2022-01-10 08:04:23,689 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 08:04:23,888 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 08:04:23,888 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1653841945, now seen corresponding path program 1 times [2022-01-10 08:04:23,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:23,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591260939] [2022-01-10 08:04:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:23,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:23,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:23,891 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 08:04:23,892 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 08:04:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:23,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:04:23,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:24,139 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 08:04:24,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:24,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:24,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591260939] [2022-01-10 08:04:24,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591260939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:24,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:24,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:04:24,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69625847] [2022-01-10 08:04:24,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:24,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:04:24,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:04:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:04:24,141 INFO L87 Difference]: Start difference. First operand 2240 states and 3646 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 08:04:24,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:24,225 INFO L93 Difference]: Finished difference Result 4348 states and 6796 transitions. [2022-01-10 08:04:24,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:04:24,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2022-01-10 08:04:24,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:24,236 INFO L225 Difference]: With dead ends: 4348 [2022-01-10 08:04:24,236 INFO L226 Difference]: Without dead ends: 2906 [2022-01-10 08:04:24,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 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 08:04:24,240 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 1478 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1624 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 08:04:24,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:04:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2022-01-10 08:04:24,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2904. [2022-01-10 08:04:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2902 states have (on average 1.5830461750516884) internal successors, (4594), 2903 states have internal predecessors, (4594), 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 08:04:24,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4594 transitions. [2022-01-10 08:04:24,324 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 4594 transitions. Word has length 54 [2022-01-10 08:04:24,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:24,324 INFO L470 AbstractCegarLoop]: Abstraction has 2904 states and 4594 transitions. [2022-01-10 08:04:24,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 08:04:24,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 4594 transitions. [2022-01-10 08:04:24,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 08:04:24,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:24,325 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] [2022-01-10 08:04:24,334 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 08:04:24,534 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 08:04:24,534 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1917083004, now seen corresponding path program 1 times [2022-01-10 08:04:24,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:24,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112792018] [2022-01-10 08:04:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:24,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:24,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:24,536 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 08:04:24,537 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 08:04:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:24,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:04:24,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:24,697 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 08:04:24,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:24,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:24,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112792018] [2022-01-10 08:04:24,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112792018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:24,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:24,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:04:24,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534446782] [2022-01-10 08:04:24,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:24,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:04:24,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:04:24,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:04:24,699 INFO L87 Difference]: Start difference. First operand 2904 states and 4594 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 08:04:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:24,877 INFO L93 Difference]: Finished difference Result 4863 states and 7383 transitions. [2022-01-10 08:04:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:04:24,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2022-01-10 08:04:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:24,897 INFO L225 Difference]: With dead ends: 4863 [2022-01-10 08:04:24,897 INFO L226 Difference]: Without dead ends: 4861 [2022-01-10 08:04:24,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:04:24,900 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 178 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6163 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:04:24,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 6163 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:04:24,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2022-01-10 08:04:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 3072. [2022-01-10 08:04:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3070 states have (on average 1.5485342019543975) internal successors, (4754), 3071 states have internal predecessors, (4754), 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 08:04:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4754 transitions. [2022-01-10 08:04:25,018 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4754 transitions. Word has length 55 [2022-01-10 08:04:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:25,019 INFO L470 AbstractCegarLoop]: Abstraction has 3072 states and 4754 transitions. [2022-01-10 08:04:25,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 08:04:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4754 transitions. [2022-01-10 08:04:25,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 08:04:25,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:25,020 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] [2022-01-10 08:04:25,030 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 08:04:25,228 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 08:04:25,228 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1748179653, now seen corresponding path program 1 times [2022-01-10 08:04:25,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:25,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725194331] [2022-01-10 08:04:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:25,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:25,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:25,231 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 08:04:25,233 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 08:04:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:25,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:04:25,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:25,466 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 08:04:25,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:25,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:25,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725194331] [2022-01-10 08:04:25,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725194331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:25,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:25,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:04:25,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334729990] [2022-01-10 08:04:25,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:25,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:04:25,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:04:25,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:04:25,468 INFO L87 Difference]: Start difference. First operand 3072 states and 4754 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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)