/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:16:08,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:16:08,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:16:08,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:16:08,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:16:08,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:16:08,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:16:08,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:16:08,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:16:08,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:16:08,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:16:08,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:16:08,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:16:08,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:16:08,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:16:08,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:16:08,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:16:08,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:16:08,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:16:08,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:16:08,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:16:08,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:16:08,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:16:08,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:16:08,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:16:08,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:16:08,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:16:08,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:16:08,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:16:08,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:16:08,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:16:08,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:16:08,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:16:08,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:16:08,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:16:08,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:16:08,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:16:08,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:16:08,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:16:08,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:16:08,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:16:08,743 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:16:08,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:16:08,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:16:08,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:16:08,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:16:08,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:16:08,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:16:08,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:16:08,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:16:08,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:16:08,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:16:08,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:16:08,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:16:08,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:16:08,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:16:08,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:16:08,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:16:08,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:16:08,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:16:08,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:16:08,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:16:08,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:16:08,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:16:08,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:16:08,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:16:08,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:16:09,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:16:09,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:16:09,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:16:09,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:16:09,027 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:16:09,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-17 12:16:09,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5614ca38a/8fd93725559544cabaff3a786137f77a/FLAG369650ced [2020-07-17 12:16:09,521 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:16:09,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-17 12:16:09,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5614ca38a/8fd93725559544cabaff3a786137f77a/FLAG369650ced [2020-07-17 12:16:09,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5614ca38a/8fd93725559544cabaff3a786137f77a [2020-07-17 12:16:09,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:16:09,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:16:09,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:09,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:16:09,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:16:09,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:09" (1/1) ... [2020-07-17 12:16:09,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c8f7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:09, skipping insertion in model container [2020-07-17 12:16:09,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:09" (1/1) ... [2020-07-17 12:16:09,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:16:09,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:16:10,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:10,160 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:16:10,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:10,299 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:16:10,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10 WrapperNode [2020-07-17 12:16:10,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:10,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:16:10,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:16:10,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:16:10,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10" (1/1) ... [2020-07-17 12:16:10,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10" (1/1) ... [2020-07-17 12:16:10,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10" (1/1) ... [2020-07-17 12:16:10,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10" (1/1) ... [2020-07-17 12:16:10,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10" (1/1) ... [2020-07-17 12:16:10,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10" (1/1) ... [2020-07-17 12:16:10,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10" (1/1) ... [2020-07-17 12:16:10,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:16:10,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:16:10,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:16:10,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:16:10,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:16:10,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:16:10,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:16:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:16:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-07-17 12:16:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-07-17 12:16:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:16:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:16:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:16:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-07-17 12:16:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-07-17 12:16:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-07-17 12:16:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-07-17 12:16:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-07-17 12:16:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-07-17 12:16:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-07-17 12:16:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-07-17 12:16:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-17 12:16:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-07-17 12:16:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-17 12:16:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-07-17 12:16:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-07-17 12:16:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-17 12:16:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-07-17 12:16:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-07-17 12:16:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-07-17 12:16:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-07-17 12:16:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-07-17 12:16:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-07-17 12:16:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-07-17 12:16:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-07-17 12:16:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-07-17 12:16:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-07-17 12:16:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-07-17 12:16:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-07-17 12:16:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 12:16:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:16:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:16:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:16:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:16:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:16:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:16:10,828 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:16:10,829 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 12:16:10,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:10 BoogieIcfgContainer [2020-07-17 12:16:10,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:16:10,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:16:10,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:16:10,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:16:10,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:16:09" (1/3) ... [2020-07-17 12:16:10,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e00b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:10, skipping insertion in model container [2020-07-17 12:16:10,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:10" (2/3) ... [2020-07-17 12:16:10,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e00b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:10, skipping insertion in model container [2020-07-17 12:16:10,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:10" (3/3) ... [2020-07-17 12:16:10,840 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-17 12:16:10,848 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:16:10,855 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:16:10,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:16:10,890 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:16:10,890 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:16:10,890 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:16:10,891 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:16:10,891 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:16:10,891 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:16:10,891 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:16:10,891 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:16:10,908 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-17 12:16:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-17 12:16:10,915 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:10,916 INFO L422 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] [2020-07-17 12:16:10,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-07-17 12:16:10,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:10,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040378457] [2020-07-17 12:16:10,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:11,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040378457] [2020-07-17 12:16:11,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:11,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:16:11,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048462586] [2020-07-17 12:16:11,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:16:11,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:11,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:16:11,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:16:11,179 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-07-17 12:16:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:11,321 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-07-17 12:16:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:16:11,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-17 12:16:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:11,332 INFO L225 Difference]: With dead ends: 93 [2020-07-17 12:16:11,332 INFO L226 Difference]: Without dead ends: 43 [2020-07-17 12:16:11,336 INFO L675 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 [2020-07-17 12:16:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-17 12:16:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-17 12:16:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-17 12:16:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-07-17 12:16:11,378 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-07-17 12:16:11,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:11,379 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-07-17 12:16:11,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:16:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-07-17 12:16:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 12:16:11,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:11,381 INFO L422 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] [2020-07-17 12:16:11,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:16:11,382 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:11,382 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-07-17 12:16:11,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:11,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913167247] [2020-07-17 12:16:11,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:11,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913167247] [2020-07-17 12:16:11,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:11,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:16:11,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314565933] [2020-07-17 12:16:11,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:16:11,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:11,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:16:11,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:16:11,478 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-07-17 12:16:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:11,584 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-07-17 12:16:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:16:11,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-07-17 12:16:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:11,587 INFO L225 Difference]: With dead ends: 78 [2020-07-17 12:16:11,587 INFO L226 Difference]: Without dead ends: 44 [2020-07-17 12:16:11,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:16:11,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-17 12:16:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-17 12:16:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-17 12:16:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-17 12:16:11,598 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-07-17 12:16:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:11,598 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-17 12:16:11,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:16:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-17 12:16:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 12:16:11,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:11,600 INFO L422 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] [2020-07-17 12:16:11,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:16:11,601 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:11,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:11,601 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-07-17 12:16:11,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:11,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021426775] [2020-07-17 12:16:11,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:11,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021426775] [2020-07-17 12:16:11,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:11,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 12:16:11,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735915061] [2020-07-17 12:16:11,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:16:11,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:11,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:16:11,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:16:11,775 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 8 states. [2020-07-17 12:16:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:12,132 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2020-07-17 12:16:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 12:16:12,132 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-07-17 12:16:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:12,137 INFO L225 Difference]: With dead ends: 140 [2020-07-17 12:16:12,137 INFO L226 Difference]: Without dead ends: 91 [2020-07-17 12:16:12,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-07-17 12:16:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-17 12:16:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-07-17 12:16:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-17 12:16:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-07-17 12:16:12,160 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 33 [2020-07-17 12:16:12,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:12,160 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-07-17 12:16:12,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:16:12,161 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-07-17 12:16:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 12:16:12,162 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:12,163 INFO L422 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] [2020-07-17 12:16:12,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:16:12,163 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:12,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:12,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1743223006, now seen corresponding path program 1 times [2020-07-17 12:16:12,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:12,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791698785] [2020-07-17 12:16:12,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:12,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791698785] [2020-07-17 12:16:12,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:12,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 12:16:12,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606927880] [2020-07-17 12:16:12,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 12:16:12,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:12,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 12:16:12,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:16:12,291 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 7 states. [2020-07-17 12:16:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:12,491 INFO L93 Difference]: Finished difference Result 136 states and 180 transitions. [2020-07-17 12:16:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 12:16:12,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-07-17 12:16:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:12,493 INFO L225 Difference]: With dead ends: 136 [2020-07-17 12:16:12,493 INFO L226 Difference]: Without dead ends: 92 [2020-07-17 12:16:12,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:16:12,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-17 12:16:12,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2020-07-17 12:16:12,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-17 12:16:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-07-17 12:16:12,506 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 33 [2020-07-17 12:16:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:12,506 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-07-17 12:16:12,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 12:16:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-07-17 12:16:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 12:16:12,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:12,508 INFO L422 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] [2020-07-17 12:16:12,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 12:16:12,509 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:12,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1042158428, now seen corresponding path program 1 times [2020-07-17 12:16:12,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:12,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900101216] [2020-07-17 12:16:12,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:12,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900101216] [2020-07-17 12:16:12,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:12,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 12:16:12,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856184549] [2020-07-17 12:16:12,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 12:16:12,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:12,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 12:16:12,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:16:12,604 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 6 states. [2020-07-17 12:16:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:12,787 INFO L93 Difference]: Finished difference Result 138 states and 179 transitions. [2020-07-17 12:16:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:16:12,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-07-17 12:16:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:12,789 INFO L225 Difference]: With dead ends: 138 [2020-07-17 12:16:12,789 INFO L226 Difference]: Without dead ends: 89 [2020-07-17 12:16:12,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:16:12,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-17 12:16:12,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-07-17 12:16:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-17 12:16:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-07-17 12:16:12,799 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 33 [2020-07-17 12:16:12,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:12,799 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-07-17 12:16:12,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 12:16:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-07-17 12:16:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 12:16:12,801 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:12,801 INFO L422 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] [2020-07-17 12:16:12,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 12:16:12,801 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:12,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash -151257089, now seen corresponding path program 1 times [2020-07-17 12:16:12,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:12,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972838942] [2020-07-17 12:16:12,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:12,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972838942] [2020-07-17 12:16:12,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:12,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:16:12,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899786863] [2020-07-17 12:16:12,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:16:12,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:12,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:16:12,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:16:12,851 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 5 states. [2020-07-17 12:16:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:12,939 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2020-07-17 12:16:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:16:12,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-07-17 12:16:12,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:12,941 INFO L225 Difference]: With dead ends: 124 [2020-07-17 12:16:12,941 INFO L226 Difference]: Without dead ends: 89 [2020-07-17 12:16:12,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:16:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-17 12:16:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-07-17 12:16:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-17 12:16:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-07-17 12:16:12,951 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 35 [2020-07-17 12:16:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:12,951 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-07-17 12:16:12,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:16:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-07-17 12:16:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 12:16:12,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:12,952 INFO L422 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] [2020-07-17 12:16:12,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 12:16:12,953 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:12,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1172325443, now seen corresponding path program 1 times [2020-07-17 12:16:12,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:12,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123240428] [2020-07-17 12:16:12,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:13,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123240428] [2020-07-17 12:16:13,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:13,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 12:16:13,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001410696] [2020-07-17 12:16:13,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 12:16:13,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:13,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 12:16:13,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:16:13,024 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 7 states. [2020-07-17 12:16:13,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:13,170 INFO L93 Difference]: Finished difference Result 147 states and 187 transitions. [2020-07-17 12:16:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 12:16:13,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-07-17 12:16:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:13,171 INFO L225 Difference]: With dead ends: 147 [2020-07-17 12:16:13,171 INFO L226 Difference]: Without dead ends: 89 [2020-07-17 12:16:13,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:16:13,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-17 12:16:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-07-17 12:16:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-17 12:16:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-07-17 12:16:13,191 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 35 [2020-07-17 12:16:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:13,191 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-07-17 12:16:13,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 12:16:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-07-17 12:16:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 12:16:13,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:13,194 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-17 12:16:13,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 12:16:13,195 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:13,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1310821647, now seen corresponding path program 1 times [2020-07-17 12:16:13,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:13,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262793292] [2020-07-17 12:16:13,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 12:16:13,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262793292] [2020-07-17 12:16:13,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:13,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 12:16:13,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312383971] [2020-07-17 12:16:13,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:16:13,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:13,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:16:13,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:16:13,360 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 8 states. [2020-07-17 12:16:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:13,612 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-07-17 12:16:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 12:16:13,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-07-17 12:16:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:13,614 INFO L225 Difference]: With dead ends: 107 [2020-07-17 12:16:13,614 INFO L226 Difference]: Without dead ends: 105 [2020-07-17 12:16:13,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-17 12:16:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-17 12:16:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-07-17 12:16:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-17 12:16:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-07-17 12:16:13,623 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 38 [2020-07-17 12:16:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:13,624 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-07-17 12:16:13,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:16:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-07-17 12:16:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 12:16:13,626 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:13,626 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-07-17 12:16:13,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 12:16:13,626 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:13,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:13,627 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-07-17 12:16:13,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:13,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585104066] [2020-07-17 12:16:13,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:13,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585104066] [2020-07-17 12:16:13,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576803757] [2020-07-17 12:16:13,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:13,787 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-17 12:16:13,794 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:13,828 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:13,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:13,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-07-17 12:16:13,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118213142] [2020-07-17 12:16:13,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:16:13,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:13,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:16:13,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:16:13,837 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 8 states. [2020-07-17 12:16:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:14,051 INFO L93 Difference]: Finished difference Result 209 states and 263 transitions. [2020-07-17 12:16:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:16:14,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-07-17 12:16:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:14,055 INFO L225 Difference]: With dead ends: 209 [2020-07-17 12:16:14,055 INFO L226 Difference]: Without dead ends: 136 [2020-07-17 12:16:14,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-17 12:16:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-17 12:16:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2020-07-17 12:16:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-17 12:16:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-07-17 12:16:14,078 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 40 [2020-07-17 12:16:14,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:14,079 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-07-17 12:16:14,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:16:14,079 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-07-17 12:16:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 12:16:14,080 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:14,083 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-07-17 12:16:14,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-17 12:16:14,285 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:14,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-07-17 12:16:14,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:14,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149017544] [2020-07-17 12:16:14,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:14,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149017544] [2020-07-17 12:16:14,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093362279] [2020-07-17 12:16:14,427 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:14,506 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-17 12:16:14,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:16:14,507 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-17 12:16:14,510 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:14,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:14,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2020-07-17 12:16:14,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609931863] [2020-07-17 12:16:14,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 12:16:14,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:14,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 12:16:14,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-07-17 12:16:14,649 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 19 states. [2020-07-17 12:16:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:15,216 INFO L93 Difference]: Finished difference Result 240 states and 302 transitions. [2020-07-17 12:16:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 12:16:15,216 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-07-17 12:16:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:15,218 INFO L225 Difference]: With dead ends: 240 [2020-07-17 12:16:15,219 INFO L226 Difference]: Without dead ends: 189 [2020-07-17 12:16:15,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-07-17 12:16:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-07-17 12:16:15,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 127. [2020-07-17 12:16:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-17 12:16:15,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2020-07-17 12:16:15,234 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 45 [2020-07-17 12:16:15,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:15,236 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2020-07-17 12:16:15,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 12:16:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-07-17 12:16:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 12:16:15,245 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:15,246 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-07-17 12:16:15,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-17 12:16:15,461 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:15,461 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-07-17 12:16:15,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:15,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587728473] [2020-07-17 12:16:15,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:15,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587728473] [2020-07-17 12:16:15,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401016124] [2020-07-17 12:16:15,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:15,661 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-17 12:16:15,664 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:15,782 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:15,783 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:15,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:15,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2020-07-17 12:16:15,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667032942] [2020-07-17 12:16:15,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 12:16:15,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:15,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 12:16:15,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-07-17 12:16:15,821 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand 19 states. [2020-07-17 12:16:16,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:16,373 INFO L93 Difference]: Finished difference Result 212 states and 267 transitions. [2020-07-17 12:16:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 12:16:16,374 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-07-17 12:16:16,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:16,377 INFO L225 Difference]: With dead ends: 212 [2020-07-17 12:16:16,377 INFO L226 Difference]: Without dead ends: 210 [2020-07-17 12:16:16,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-07-17 12:16:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-07-17 12:16:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 146. [2020-07-17 12:16:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-17 12:16:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2020-07-17 12:16:16,389 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 45 [2020-07-17 12:16:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:16,389 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2020-07-17 12:16:16,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 12:16:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2020-07-17 12:16:16,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 12:16:16,390 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:16,390 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-07-17 12:16:16,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-07-17 12:16:16,602 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:16,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-07-17 12:16:16,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:16,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18579087] [2020-07-17 12:16:16,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:16:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:16:16,655 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:16:16,655 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:16:16,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 12:16:16,685 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,687 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,687 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,688 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,689 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,689 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,689 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,690 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,690 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,691 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,692 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:16:16,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:16:16 BoogieIcfgContainer [2020-07-17 12:16:16,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:16:16,704 INFO L168 Benchmark]: Toolchain (without parser) took 6785.60 ms. Allocated memory was 144.7 MB in the beginning and 284.7 MB in the end (delta: 140.0 MB). Free memory was 102.0 MB in the beginning and 172.4 MB in the end (delta: -70.4 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:16,705 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 12:16:16,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.29 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 178.6 MB in the end (delta: -77.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:16,706 INFO L168 Benchmark]: Boogie Preprocessor took 43.56 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 176.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:16,707 INFO L168 Benchmark]: RCFGBuilder took 489.03 ms. Allocated memory is still 201.9 MB. Free memory was 175.9 MB in the beginning and 148.1 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:16,708 INFO L168 Benchmark]: TraceAbstraction took 5867.76 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 148.1 MB in the beginning and 172.4 MB in the end (delta: -24.2 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:16,711 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.29 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 178.6 MB in the end (delta: -77.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.56 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 176.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.03 ms. Allocated memory is still 201.9 MB. Free memory was 175.9 MB in the beginning and 148.1 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5867.76 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 148.1 MB in the beginning and 172.4 MB in the end (delta: -24.2 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] char A [2 + 2 + 4 +1]; [L75] A[2 + 2 + 4] = 0 VAL [A={4:0}] [L76] CALL parse_expression_list (A) VAL [str={4:0}] [L48] int start=0, i=-1, j=-1; [L49] char str2[2]; VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L50] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L52] i++ [L53] str[i] [L54] case 0: VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] EXPR str[i] VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-2] [L69] EXPR str[i] VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-2] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=-1, str[start]=-1] [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L56] EXPR str[start] VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=-1] [L56] COND FALSE !(str[start] == '"') [L57] j = i-1 VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2, str[j]=-2] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2, str[j]=-2] [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L59] (0 < j) && (str[j] == '"') [L59] EXPR str[j] [L59] (0 < j) && (str[j] == '"') VAL [(0 < j) && (str[j] == '"')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2] [L59] COND FALSE !((0 < j) && (str[j] == '"')) [L60] COND TRUE start<=j VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L61] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={3:0}, src={4:0}] [L30] return strncpy(dest,src,n); [L61] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j=1, r_strncpy(str2, str+start, j-start+1)={35:37}, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L62] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 532 SDtfs, 954 SDslu, 1451 SDs, 0 SdLazy, 2054 SolverSat, 255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 219 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 68435 SizeOfPredicates, 8 NumberOfNonLiveVariables, 482 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 2/42 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! Received shutdown request...