/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 01:13:04,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 01:13:04,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 01:13:04,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 01:13:04,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 01:13:04,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 01:13:04,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 01:13:04,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 01:13:04,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 01:13:04,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 01:13:04,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 01:13:04,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 01:13:04,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 01:13:04,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 01:13:04,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 01:13:04,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 01:13:04,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 01:13:04,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 01:13:04,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 01:13:04,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 01:13:04,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 01:13:04,103 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 01:13:04,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 01:13:04,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 01:13:04,105 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 01:13:04,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 01:13:04,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 01:13:04,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 01:13:04,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 01:13:04,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 01:13:04,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 01:13:04,106 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 01:13:04,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 01:13:04,106 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 01:13:04,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 01:13:04,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 01:13:04,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 01:13:04,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 01:13:04,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 01:13:04,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:13:04,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 01:13:04,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 01:13:04,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 01:13:04,107 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 01:13:04,107 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 01:13:04,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 01:13:04,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 01:13:04,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 01:13:04,308 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 01:13:04,308 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 01:13:04,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-02-24 01:13:04,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96eac62c8/fbc9e6cc24f047f1979c0d0741dba50b/FLAG3a8943fb5 [2022-02-24 01:13:04,703 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 01:13:04,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-02-24 01:13:04,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96eac62c8/fbc9e6cc24f047f1979c0d0741dba50b/FLAG3a8943fb5 [2022-02-24 01:13:05,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96eac62c8/fbc9e6cc24f047f1979c0d0741dba50b [2022-02-24 01:13:05,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 01:13:05,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 01:13:05,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 01:13:05,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 01:13:05,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 01:13:05,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a668ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05, skipping insertion in model container [2022-02-24 01:13:05,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 01:13:05,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 01:13:05,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-02-24 01:13:05,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:13:05,297 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 01:13:05,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-02-24 01:13:05,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:13:05,326 INFO L208 MainTranslator]: Completed translation [2022-02-24 01:13:05,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05 WrapperNode [2022-02-24 01:13:05,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 01:13:05,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 01:13:05,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 01:13:05,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 01:13:05,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 01:13:05,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 01:13:05,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 01:13:05,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 01:13:05,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05" (1/1) ... [2022-02-24 01:13:05,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:13:05,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 01:13:05,424 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) [2022-02-24 01:13:05,426 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 [2022-02-24 01:13:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 01:13:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 01:13:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 01:13:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 01:13:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2022-02-24 01:13:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2022-02-24 01:13:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 01:13:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 01:13:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 01:13:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-24 01:13:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-24 01:13:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-02-24 01:13:05,460 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2022-02-24 01:13:05,461 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 01:13:05,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 01:13:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 01:13:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 01:13:05,554 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 01:13:05,555 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 01:13:05,723 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 01:13:05,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 01:13:05,727 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-02-24 01:13:05,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:13:05 BoogieIcfgContainer [2022-02-24 01:13:05,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 01:13:05,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 01:13:05,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 01:13:05,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 01:13:05,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 01:13:05" (1/3) ... [2022-02-24 01:13:05,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208d99db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:13:05, skipping insertion in model container [2022-02-24 01:13:05,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:13:05" (2/3) ... [2022-02-24 01:13:05,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208d99db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:13:05, skipping insertion in model container [2022-02-24 01:13:05,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:13:05" (3/3) ... [2022-02-24 01:13:05,734 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-02-24 01:13:05,737 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 01:13:05,737 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 01:13:05,771 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 01:13:05,776 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=JORDAN [2022-02-24 01:13:05,776 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 01:13:05,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-24 01:13:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-24 01:13:05,794 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:05,795 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] [2022-02-24 01:13:05,795 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -541205821, now seen corresponding path program 1 times [2022-02-24 01:13:05,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:05,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603244956] [2022-02-24 01:13:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:05,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:05,850 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:13:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 01:13:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:05,944 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:05,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603244956] [2022-02-24 01:13:05,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1603244956] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:05,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:05,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-24 01:13:05,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449913754] [2022-02-24 01:13:05,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:05,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-24 01:13:05,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-24 01:13:05,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 01:13:05,972 INFO L87 Difference]: Start difference. First operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:06,031 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2022-02-24 01:13:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-24 01:13:06,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-02-24 01:13:06,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:06,038 INFO L225 Difference]: With dead ends: 102 [2022-02-24 01:13:06,038 INFO L226 Difference]: Without dead ends: 47 [2022-02-24 01:13:06,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 01:13:06,044 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 55 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:06,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 68 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:13:06,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-24 01:13:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-02-24 01:13:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 01:13:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-02-24 01:13:06,082 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2022-02-24 01:13:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:06,082 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-02-24 01:13:06,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-02-24 01:13:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-24 01:13:06,083 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:06,083 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] [2022-02-24 01:13:06,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 01:13:06,084 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:06,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1555699344, now seen corresponding path program 1 times [2022-02-24 01:13:06,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:06,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383141564] [2022-02-24 01:13:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:06,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:06,088 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:13:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 01:13:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:06,185 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:06,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383141564] [2022-02-24 01:13:06,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1383141564] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:06,187 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:06,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 01:13:06,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561309318] [2022-02-24 01:13:06,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:06,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 01:13:06,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 01:13:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 01:13:06,189 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:06,300 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2022-02-24 01:13:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 01:13:06,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-02-24 01:13:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:06,301 INFO L225 Difference]: With dead ends: 88 [2022-02-24 01:13:06,301 INFO L226 Difference]: Without dead ends: 49 [2022-02-24 01:13:06,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:13:06,302 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:06,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 60 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:13:06,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-24 01:13:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-02-24 01:13:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 01:13:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-02-24 01:13:06,317 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 36 [2022-02-24 01:13:06,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:06,318 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-02-24 01:13:06,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-02-24 01:13:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-24 01:13:06,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:06,321 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] [2022-02-24 01:13:06,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 01:13:06,321 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:06,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1615735470, now seen corresponding path program 1 times [2022-02-24 01:13:06,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:06,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309078778] [2022-02-24 01:13:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:06,341 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:06,342 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:06,342 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 01:13:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:06,459 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:06,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309078778] [2022-02-24 01:13:06,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1309078778] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:06,460 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:06,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 01:13:06,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83669657] [2022-02-24 01:13:06,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:06,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 01:13:06,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 01:13:06,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:13:06,463 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:06,573 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2022-02-24 01:13:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 01:13:06,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-02-24 01:13:06,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:06,575 INFO L225 Difference]: With dead ends: 90 [2022-02-24 01:13:06,575 INFO L226 Difference]: Without dead ends: 51 [2022-02-24 01:13:06,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-24 01:13:06,578 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 51 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:06,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 65 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:13:06,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-24 01:13:06,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-02-24 01:13:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 states have internal predecessors, (52), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 01:13:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2022-02-24 01:13:06,586 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 38 [2022-02-24 01:13:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:06,586 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2022-02-24 01:13:06,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2022-02-24 01:13:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 01:13:06,587 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:06,587 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:06,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 01:13:06,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash 819089588, now seen corresponding path program 2 times [2022-02-24 01:13:06,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:06,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370688971] [2022-02-24 01:13:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:06,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:06,592 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:06,592 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:06,592 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-24 01:13:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:06,647 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:06,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370688971] [2022-02-24 01:13:06,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [370688971] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:06,648 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:06,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 01:13:06,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391256862] [2022-02-24 01:13:06,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:06,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 01:13:06,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:06,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 01:13:06,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 01:13:06,649 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:06,709 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2022-02-24 01:13:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 01:13:06,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-02-24 01:13:06,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:06,711 INFO L225 Difference]: With dead ends: 86 [2022-02-24 01:13:06,711 INFO L226 Difference]: Without dead ends: 51 [2022-02-24 01:13:06,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:13:06,720 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 47 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:06,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 61 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:13:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-24 01:13:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-02-24 01:13:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 01:13:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-02-24 01:13:06,730 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 40 [2022-02-24 01:13:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:06,730 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-02-24 01:13:06,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-02-24 01:13:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 01:13:06,731 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:13:06,731 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:13:06,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 01:13:06,731 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:13:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:13:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1077255026, now seen corresponding path program 1 times [2022-02-24 01:13:06,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:13:06,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859528756] [2022-02-24 01:13:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:13:06,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:13:06,735 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:13:06,735 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 01:13:06,735 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:13:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:13:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-24 01:13:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:13:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:13:06,834 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:13:06,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859528756] [2022-02-24 01:13:06,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [859528756] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:13:06,834 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:13:06,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 01:13:06,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202992598] [2022-02-24 01:13:06,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:13:06,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 01:13:06,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:13:06,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 01:13:06,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-24 01:13:06,835 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:13:06,954 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2022-02-24 01:13:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 01:13:06,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-02-24 01:13:06,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:13:06,955 INFO L225 Difference]: With dead ends: 62 [2022-02-24 01:13:06,955 INFO L226 Difference]: Without dead ends: 0 [2022-02-24 01:13:06,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-24 01:13:06,960 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 77 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:13:06,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 62 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:13:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-24 01:13:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-24 01:13:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-02-24 01:13:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-24 01:13:06,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-02-24 01:13:06,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:13:06,962 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-24 01:13:06,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:13:06,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-24 01:13:06,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-24 01:13:06,964 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 01:13:06,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 01:13:06,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-24 01:13:07,067 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-02-24 01:13:07,067 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-02-24 01:13:07,068 INFO L858 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-02-24 01:13:07,068 INFO L861 garLoopResultBuilder]: At program point r_strncpyFINAL(line 42) the Hoare annotation is: true [2022-02-24 01:13:07,068 INFO L861 garLoopResultBuilder]: At program point r_strncpyEXIT(line 42) the Hoare annotation is: true [2022-02-24 01:13:07,068 INFO L861 garLoopResultBuilder]: At program point r_strncpyENTRY(line 42) the Hoare annotation is: true [2022-02-24 01:13:07,068 INFO L861 garLoopResultBuilder]: At program point L94(line 94) the Hoare annotation is: true [2022-02-24 01:13:07,068 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 87 96) the Hoare annotation is: true [2022-02-24 01:13:07,068 INFO L861 garLoopResultBuilder]: At program point L94-1(line 94) the Hoare annotation is: true [2022-02-24 01:13:07,068 INFO L861 garLoopResultBuilder]: At program point mainEXIT(lines 87 96) the Hoare annotation is: true [2022-02-24 01:13:07,068 INFO L861 garLoopResultBuilder]: At program point L90-2(lines 90 92) the Hoare annotation is: true [2022-02-24 01:13:07,069 INFO L861 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2022-02-24 01:13:07,069 INFO L861 garLoopResultBuilder]: At program point L90-4(lines 90 92) the Hoare annotation is: true [2022-02-24 01:13:07,069 INFO L861 garLoopResultBuilder]: At program point mainFINAL(lines 87 96) the Hoare annotation is: true [2022-02-24 01:13:07,069 INFO L854 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-02-24 01:13:07,069 INFO L854 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-02-24 01:13:07,069 INFO L861 garLoopResultBuilder]: At program point L73(lines 73 75) the Hoare annotation is: true [2022-02-24 01:13:07,069 INFO L861 garLoopResultBuilder]: At program point L65(lines 65 83) the Hoare annotation is: true [2022-02-24 01:13:07,069 INFO L861 garLoopResultBuilder]: At program point L70-1(line 70) the Hoare annotation is: true [2022-02-24 01:13:07,069 INFO L861 garLoopResultBuilder]: At program point L70-2(line 70) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point L66(line 66) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point L70-4(line 70) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point L70-6(line 70) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point parse_expression_listFINAL(lines 58 86) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L854 garLoopResultBuilder]: At program point L62(line 62) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point L70-9(line 70) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point parse_expression_listENTRY(lines 58 86) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point L71-2(line 71) the Hoare annotation is: true [2022-02-24 01:13:07,070 INFO L861 garLoopResultBuilder]: At program point L71-4(lines 65 83) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L861 garLoopResultBuilder]: At program point L67-1(line 67) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L861 garLoopResultBuilder]: At program point L67-3(line 67) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L861 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L861 garLoopResultBuilder]: At program point L63-1(lines 63 84) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L861 garLoopResultBuilder]: At program point L67-6(line 67) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L861 garLoopResultBuilder]: At program point L63-2(lines 63 84) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L861 garLoopResultBuilder]: At program point parse_expression_listEXIT(lines 58 86) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L861 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L861 garLoopResultBuilder]: At program point L63-5(lines 63 84) the Hoare annotation is: true [2022-02-24 01:13:07,071 INFO L854 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-02-24 01:13:07,071 INFO L854 garLoopResultBuilder]: At program point L76-1(line 76) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-02-24 01:13:07,071 INFO L854 garLoopResultBuilder]: At program point L72(lines 72 81) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-02-24 01:13:07,072 INFO L861 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: true [2022-02-24 01:13:07,072 INFO L861 garLoopResultBuilder]: At program point L68-2(line 68) the Hoare annotation is: true [2022-02-24 01:13:07,072 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-02-24 01:13:07,072 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-24 01:13:07,072 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-02-24 01:13:07,072 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-02-24 01:13:07,072 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-24 01:13:07,072 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-24 01:13:07,072 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-02-24 01:13:07,072 INFO L854 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-02-24 01:13:07,072 INFO L854 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-02-24 01:13:07,072 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2022-02-24 01:13:07,073 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-02-24 01:13:07,073 INFO L854 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-02-24 01:13:07,073 INFO L854 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-02-24 01:13:07,075 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-02-24 01:13:07,076 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 01:13:07,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 01:13:07 BoogieIcfgContainer [2022-02-24 01:13:07,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 01:13:07,085 INFO L158 Benchmark]: Toolchain (without parser) took 1959.14ms. Allocated memory was 210.8MB in the beginning and 263.2MB in the end (delta: 52.4MB). Free memory was 157.9MB in the beginning and 177.1MB in the end (delta: -19.2MB). Peak memory consumption was 34.4MB. Max. memory is 8.0GB. [2022-02-24 01:13:07,085 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 210.8MB. Free memory is still 175.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 01:13:07,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.19ms. Allocated memory was 210.8MB in the beginning and 263.2MB in the end (delta: 52.4MB). Free memory was 157.8MB in the beginning and 235.5MB in the end (delta: -77.8MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. [2022-02-24 01:13:07,086 INFO L158 Benchmark]: Boogie Preprocessor took 25.51ms. Allocated memory is still 263.2MB. Free memory was 235.5MB in the beginning and 233.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-24 01:13:07,086 INFO L158 Benchmark]: RCFGBuilder took 375.08ms. Allocated memory is still 263.2MB. Free memory was 233.4MB in the beginning and 217.2MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-02-24 01:13:07,086 INFO L158 Benchmark]: TraceAbstraction took 1355.24ms. Allocated memory is still 263.2MB. Free memory was 216.6MB in the beginning and 177.1MB in the end (delta: 39.4MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. [2022-02-24 01:13:07,087 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 210.8MB. Free memory is still 175.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.19ms. Allocated memory was 210.8MB in the beginning and 263.2MB in the end (delta: 52.4MB). Free memory was 157.8MB in the beginning and 235.5MB in the end (delta: -77.8MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.51ms. Allocated memory is still 263.2MB. Free memory was 235.5MB in the beginning and 233.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 375.08ms. Allocated memory is still 263.2MB. Free memory was 233.4MB in the beginning and 217.2MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1355.24ms. Allocated memory is still 263.2MB. Free memory was 216.6MB in the beginning and 177.1MB in the end (delta: 39.4MB). Peak memory consumption was 41.0MB. 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 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 288 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 316 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 370 IncrementalHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 270 mSDtfsCounter, 370 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 22, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 184 PreInvPairs, 243 NumberOfFragments, 116 HoareAnnotationTreeSize, 184 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 55 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 58]: Procedure Contract for parse_expression_list Derived contract for procedure parse_expression_list: 1 - ProcedureContractResult [Line: 42]: Procedure Contract for r_strncpy Derived contract for procedure r_strncpy: 1 - ProcedureContractResult [Line: 87]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-02-24 01:13:07,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...