/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_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test27-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:50:42,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:50:42,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:50:43,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 00:50:43,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 00:50:43,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 00:50:43,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 00:50:43,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 00:50:43,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 00:50:43,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 00:50:43,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 00:50:43,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 00:50:43,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 00:50:43,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 00:50:43,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 00:50:43,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 00:50:43,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 00:50:43,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 00:50:43,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 00:50:43,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 00:50:43,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 00:50:43,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 00:50:43,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 00:50:43,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 00:50:43,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 00:50:43,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 00:50:43,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 00:50:43,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 00:50:43,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 00:50:43,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 00:50:43,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 00:50:43,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 00:50:43,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 00:50:43,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 00:50:43,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 00:50:43,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 00:50:43,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 00:50:43,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 00:50:43,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 00:50:43,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 00:50:43,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 00:50:43,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:50:43,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:50:43,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:50:43,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:50:43,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:50:43,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:50:43,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:50:43,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:50:43,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:50:43,116 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:50:43,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:50:43,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:50:43,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:50:43,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:50:43,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:50:43,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:50:43,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:50:43,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:50:43,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:50:43,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:50:43,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:50:43,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:50:43,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:50:43,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:50:43,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:50:43,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:50:43,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:50:43,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:50:43,117 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:50:43,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:50:43,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:50:43,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:50:43,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:50:43,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:50:43,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:50:43,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:50:43,309 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:50:43,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test27-2.c [2022-01-10 00:50:43,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a5f1e8f/ad290311e2044e5385f1ff2873731670/FLAG7142ba25c [2022-01-10 00:50:43,713 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:50:43,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test27-2.c [2022-01-10 00:50:43,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a5f1e8f/ad290311e2044e5385f1ff2873731670/FLAG7142ba25c [2022-01-10 00:50:43,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a5f1e8f/ad290311e2044e5385f1ff2873731670 [2022-01-10 00:50:43,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:50:43,740 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:50:43,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:50:43,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:50:43,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:50:43,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:43,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b430d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43, skipping insertion in model container [2022-01-10 00:50:43,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:43,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:50:43,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:50:43,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test27-2.c[1224,1237] [2022-01-10 00:50:43,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:50:43,947 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:50:43,963 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test27-2.c[1224,1237] [2022-01-10 00:50:43,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:50:43,975 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:50:43,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43 WrapperNode [2022-01-10 00:50:43,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:50:43,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:50:43,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:50:43,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:50:43,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:43,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:44,012 INFO L137 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2022-01-10 00:50:44,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:50:44,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:50:44,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:50:44,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:50:44,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:44,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:44,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:44,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:44,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:44,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:44,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:44,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:50:44,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:50:44,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:50:44,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:50:44,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (1/1) ... [2022-01-10 00:50:44,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:50:44,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:50:44,057 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 00:50:44,082 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 00:50:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 00:50:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:50:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:50:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 00:50:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 00:50:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-10 00:50:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:50:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:50:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-10 00:50:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 00:50:44,194 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:50:44,196 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:50:44,443 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:50:44,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:50:44,454 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 00:50:44,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:50:44 BoogieIcfgContainer [2022-01-10 00:50:44,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:50:44,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:50:44,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:50:44,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:50:44,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:50:43" (1/3) ... [2022-01-10 00:50:44,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e402ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:50:44, skipping insertion in model container [2022-01-10 00:50:44,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:43" (2/3) ... [2022-01-10 00:50:44,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e402ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:50:44, skipping insertion in model container [2022-01-10 00:50:44,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:50:44" (3/3) ... [2022-01-10 00:50:44,464 INFO L111 eAbstractionObserver]: Analyzing ICFG test27-2.c [2022-01-10 00:50:44,469 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:50:44,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:50:44,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:50:44,531 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 00:50:44,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:50:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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 00:50:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 00:50:44,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:44,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:44,552 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:44,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:44,556 INFO L85 PathProgramCache]: Analyzing trace with hash -631347226, now seen corresponding path program 1 times [2022-01-10 00:50:44,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:44,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643299850] [2022-01-10 00:50:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:44,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:44,777 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 00:50:44,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:50:44,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643299850] [2022-01-10 00:50:44,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643299850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:50:44,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:50:44,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:50:44,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687384208] [2022-01-10 00:50:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:50:44,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:50:44,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:50:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:50:44,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:50:44,812 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 00:50:44,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:50:44,844 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2022-01-10 00:50:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:50:44,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-01-10 00:50:44,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:50:44,853 INFO L225 Difference]: With dead ends: 32 [2022-01-10 00:50:44,854 INFO L226 Difference]: Without dead ends: 15 [2022-01-10 00:50:44,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 00:50:44,861 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:50:44,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 00:50:44,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-10 00:50:44,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-01-10 00:50:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 00:50:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-01-10 00:50:44,891 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2022-01-10 00:50:44,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:50:44,891 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-01-10 00:50:44,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 00:50:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-01-10 00:50:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 00:50:44,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:44,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:44,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:50:44,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:44,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:44,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1434190826, now seen corresponding path program 1 times [2022-01-10 00:50:44,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:44,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610101635] [2022-01-10 00:50:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:44,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:45,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:50:45,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610101635] [2022-01-10 00:50:45,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610101635] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:50:45,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944059438] [2022-01-10 00:50:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:45,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:50:45,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:50:45,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:50:45,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:50:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:45,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 00:50:45,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:50:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:45,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:50:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:45,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944059438] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:50:45,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:50:45,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 00:50:45,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283411184] [2022-01-10 00:50:45,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:50:45,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 00:50:45,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:50:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 00:50:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:50:45,276 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 00:50:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:50:45,310 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-01-10 00:50:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 00:50:45,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 13 [2022-01-10 00:50:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:50:45,311 INFO L225 Difference]: With dead ends: 29 [2022-01-10 00:50:45,312 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 00:50:45,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:50:45,313 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:50:45,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 00:50:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 00:50:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 00:50:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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 00:50:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-01-10 00:50:45,322 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2022-01-10 00:50:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:50:45,326 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-01-10 00:50:45,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 00:50:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-01-10 00:50:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 00:50:45,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:45,328 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:45,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:50:45,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:50:45,549 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:45,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:45,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1444204464, now seen corresponding path program 2 times [2022-01-10 00:50:45,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:45,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648921824] [2022-01-10 00:50:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:45,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:45,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:50:45,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648921824] [2022-01-10 00:50:45,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648921824] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:50:45,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781910014] [2022-01-10 00:50:45,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 00:50:45,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:50:45,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:50:45,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:50:45,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:50:45,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 00:50:45,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 00:50:45,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 00:50:45,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:50:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:45,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:50:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:45,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781910014] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:50:45,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:50:45,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-01-10 00:50:45,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328088240] [2022-01-10 00:50:45,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:50:45,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 00:50:45,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:50:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 00:50:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-01-10 00:50:45,993 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 00:50:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:50:46,030 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-01-10 00:50:46,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 00:50:46,031 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 00:50:46,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:50:46,031 INFO L225 Difference]: With dead ends: 41 [2022-01-10 00:50:46,031 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 00:50:46,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-01-10 00:50:46,032 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:50:46,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 42 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 00:50:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 00:50:46,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-10 00:50:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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 00:50:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-01-10 00:50:46,035 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19 [2022-01-10 00:50:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:50:46,035 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-01-10 00:50:46,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 00:50:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-01-10 00:50:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 00:50:46,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:46,036 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:46,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:50:46,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-10 00:50:46,264 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:46,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1003651516, now seen corresponding path program 3 times [2022-01-10 00:50:46,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:46,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957388193] [2022-01-10 00:50:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:46,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 00:50:46,443 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 00:50:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 00:50:46,637 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 00:50:46,638 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 00:50:46,638 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 00:50:46,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:50:46,641 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2022-01-10 00:50:46,643 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 00:50:46,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:50:46 BoogieIcfgContainer [2022-01-10 00:50:46,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 00:50:46,676 INFO L158 Benchmark]: Toolchain (without parser) took 2936.04ms. Allocated memory was 189.8MB in the beginning and 255.9MB in the end (delta: 66.1MB). Free memory was 132.7MB in the beginning and 156.0MB in the end (delta: -23.3MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. [2022-01-10 00:50:46,676 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 00:50:46,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.90ms. Allocated memory was 189.8MB in the beginning and 255.9MB in the end (delta: 66.1MB). Free memory was 132.5MB in the beginning and 227.3MB in the end (delta: -94.8MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-01-10 00:50:46,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.98ms. Allocated memory is still 255.9MB. Free memory was 227.3MB in the beginning and 225.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 00:50:46,677 INFO L158 Benchmark]: Boogie Preprocessor took 21.53ms. Allocated memory is still 255.9MB. Free memory was 225.2MB in the beginning and 224.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 00:50:46,677 INFO L158 Benchmark]: RCFGBuilder took 421.31ms. Allocated memory is still 255.9MB. Free memory was 223.7MB in the beginning and 209.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-01-10 00:50:46,677 INFO L158 Benchmark]: TraceAbstraction took 2218.50ms. Allocated memory is still 255.9MB. Free memory was 209.0MB in the beginning and 156.0MB in the end (delta: 53.0MB). Peak memory consumption was 54.0MB. Max. memory is 8.0GB. [2022-01-10 00:50:46,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.90ms. Allocated memory was 189.8MB in the beginning and 255.9MB in the end (delta: 66.1MB). Free memory was 132.5MB in the beginning and 227.3MB in the end (delta: -94.8MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.98ms. Allocated memory is still 255.9MB. Free memory was 227.3MB in the beginning and 225.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.53ms. Allocated memory is still 255.9MB. Free memory was 225.2MB in the beginning and 224.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 421.31ms. Allocated memory is still 255.9MB. Free memory was 223.7MB in the beginning and 209.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2218.50ms. Allocated memory is still 255.9MB. Free memory was 209.0MB in the beginning and 156.0MB in the end (delta: 53.0MB). Peak memory consumption was 54.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 55]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] struct cont cont; [L24] struct dummy dummy; [L25] struct dummy *dummies[10]; [L26] int a[10]; [L27] int i, *pa; [L28] i = __VERIFIER_nondet_int() [L29] int j = 0; VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=0] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=0] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=1] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=1] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=2] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=2] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=3] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=3] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=4] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=4] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=5] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=5] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=6] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=6] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=7] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=7] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=8] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=8] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=9] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=9] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=10] [L29] COND FALSE !(j < 10) VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=10] [L36] COND TRUE i >= 0 && i < 9 [L37] a[i] = i [L38] dummy.array = &a[i] [L39] dummies[i + 1] = &dummy [L40] cont.array = &dummies[0] [L41] EXPR cont.array [L41] EXPR cont.array[i] [L41] EXPR cont.array[i]->array [L41] pa = &cont.array[i]->array[i] [L42] EXPR a[i] VAL [a={7:0}, a[i]=1, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=10, pa={157:-12}] [L42] COND TRUE a[i] > 0 [L43] EXPR dummies[i + 1] [L43] EXPR dummies[i + 1]->array [L43] EXPR dummies[i + 1]->array[i] [L43] i = dummies[i + 1]->array[i] - 10 [L44] EXPR \read(*pa) VAL [\read(*pa)=-4, a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=15, j=10, pa={157:-12}] [L44] COND FALSE !(i < *pa) [L47] CALL, EXPR check(&cont, i) [L18] EXPR pc->array [L18] EXPR pc->array[i] [L18] EXPR pc->array[i]->array [L18] EXPR pc->array[i]->array[i] [L18] return pc->array[i]->array[i] == i; [L47] RET, EXPR check(&cont, i) [L47] COND TRUE !check(&cont, i) [L55] reach_error() VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=15, j=10, pa={157:-12}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 42 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 533 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-10 00:50:46,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...