./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test05.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05c65c7d68b3a37a7b43ddbea39e95d8b1d121ee ............................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 00:58:21,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 00:58:21,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 00:58:21,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 00:58:21,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 00:58:21,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 00:58:21,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 00:58:21,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 00:58:21,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 00:58:21,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 00:58:21,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 00:58:21,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 00:58:21,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 00:58:21,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 00:58:21,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 00:58:21,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 00:58:21,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 00:58:21,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 00:58:21,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 00:58:21,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 00:58:21,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 00:58:21,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 00:58:21,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 00:58:21,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 00:58:21,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 00:58:21,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 00:58:21,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 00:58:21,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 00:58:21,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 00:58:21,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 00:58:21,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 00:58:21,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 00:58:21,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 00:58:21,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 00:58:21,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 00:58:21,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 00:58:21,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 00:58:21,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 00:58:21,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 00:58:21,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 00:58:21,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 00:58:21,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 00:58:21,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 00:58:21,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 00:58:21,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 00:58:21,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 00:58:21,747 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 00:58:21,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 00:58:21,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 00:58:21,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 00:58:21,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 00:58:21,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 00:58:21,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 00:58:21,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 00:58:21,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 00:58:21,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 00:58:21,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 00:58:21,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 00:58:21,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 00:58:21,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 00:58:21,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 00:58:21,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 00:58:21,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 00:58:21,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 00:58:21,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 00:58:21,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 00:58:21,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 00:58:21,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 00:58:21,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 00:58:21,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 00:58:21,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c65c7d68b3a37a7b43ddbea39e95d8b1d121ee [2021-07-05 00:58:21,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 00:58:22,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 00:58:22,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 00:58:22,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 00:58:22,018 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 00:58:22,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test05.c [2021-07-05 00:58:22,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce78e3b9f/74660ffd0fcf4c6fb84dee50fb00f0af/FLAG76697a2fc [2021-07-05 00:58:22,437 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 00:58:22,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test05.c [2021-07-05 00:58:22,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce78e3b9f/74660ffd0fcf4c6fb84dee50fb00f0af/FLAG76697a2fc [2021-07-05 00:58:22,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce78e3b9f/74660ffd0fcf4c6fb84dee50fb00f0af [2021-07-05 00:58:22,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 00:58:22,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 00:58:22,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 00:58:22,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 00:58:22,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 00:58:22,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fb9110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22, skipping insertion in model container [2021-07-05 00:58:22,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 00:58:22,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 00:58:22,625 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test05.c[710,723] [2021-07-05 00:58:22,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 00:58:22,635 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 00:58:22,651 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test05.c[710,723] [2021-07-05 00:58:22,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 00:58:22,666 INFO L208 MainTranslator]: Completed translation [2021-07-05 00:58:22,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22 WrapperNode [2021-07-05 00:58:22,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 00:58:22,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 00:58:22,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 00:58:22,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 00:58:22,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 00:58:22,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 00:58:22,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 00:58:22,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 00:58:22,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 00:58:22,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 00:58:22,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 00:58:22,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 00:58:22,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (1/1) ... [2021-07-05 00:58:22,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 00:58:22,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 00:58:22,778 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) [2021-07-05 00:58:22,808 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 [2021-07-05 00:58:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-07-05 00:58:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 00:58:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-07-05 00:58:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 00:58:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-05 00:58:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 00:58:22,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 00:58:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-05 00:58:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-05 00:58:23,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 00:58:23,064 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-05 00:58:23,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 12:58:23 BoogieIcfgContainer [2021-07-05 00:58:23,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 00:58:23,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 00:58:23,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 00:58:23,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 00:58:23,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 12:58:22" (1/3) ... [2021-07-05 00:58:23,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d55a52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 12:58:23, skipping insertion in model container [2021-07-05 00:58:23,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 12:58:22" (2/3) ... [2021-07-05 00:58:23,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d55a52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 12:58:23, skipping insertion in model container [2021-07-05 00:58:23,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 12:58:23" (3/3) ... [2021-07-05 00:58:23,070 INFO L111 eAbstractionObserver]: Analyzing ICFG test05.c [2021-07-05 00:58:23,073 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 00:58:23,074 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 00:58:23,099 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 00:58:23,104 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 00:58:23,104 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 00:58:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-07-05 00:58:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 00:58:23,114 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 00:58:23,114 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 00:58:23,114 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 00:58:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 00:58:23,118 INFO L82 PathProgramCache]: Analyzing trace with hash 889629870, now seen corresponding path program 1 times [2021-07-05 00:58:23,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 00:58:23,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240376685] [2021-07-05 00:58:23,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 00:58:23,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 00:58:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 00:58:23,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 00:58:23,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 00:58:23,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 00:58:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 00:58:23,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 00:58:23,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240376685] [2021-07-05 00:58:23,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240376685] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 00:58:23,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 00:58:23,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-05 00:58:23,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531678569] [2021-07-05 00:58:23,277 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 00:58:23,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 00:58:23,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 00:58:23,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 00:58:23,289 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-07-05 00:58:23,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 00:58:23,322 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-07-05 00:58:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 00:58:23,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-07-05 00:58:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 00:58:23,327 INFO L225 Difference]: With dead ends: 20 [2021-07-05 00:58:23,328 INFO L226 Difference]: Without dead ends: 9 [2021-07-05 00:58:23,329 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 00:58:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-07-05 00:58:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-07-05 00:58:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-07-05 00:58:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-07-05 00:58:23,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-07-05 00:58:23,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 00:58:23,348 INFO L442 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-07-05 00:58:23,348 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-07-05 00:58:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-07-05 00:58:23,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 00:58:23,348 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 00:58:23,349 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-05 00:58:23,349 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 00:58:23,349 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 00:58:23,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 00:58:23,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1804905807, now seen corresponding path program 1 times [2021-07-05 00:58:23,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 00:58:23,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453498934] [2021-07-05 00:58:23,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 00:58:23,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 00:58:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 00:58:23,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 00:58:23,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 00:58:23,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 00:58:23,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 00:58:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 00:58:23,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 00:58:23,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453498934] [2021-07-05 00:58:23,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453498934] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 00:58:23,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 00:58:23,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 00:58:23,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110733864] [2021-07-05 00:58:23,421 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 00:58:23,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 00:58:23,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 00:58:23,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 00:58:23,424 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-07-05 00:58:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 00:58:23,451 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-07-05 00:58:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 00:58:23,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-07-05 00:58:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 00:58:23,452 INFO L225 Difference]: With dead ends: 11 [2021-07-05 00:58:23,452 INFO L226 Difference]: Without dead ends: 9 [2021-07-05 00:58:23,453 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 00:58:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-07-05 00:58:23,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-07-05 00:58:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2021-07-05 00:58:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-07-05 00:58:23,457 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 7 [2021-07-05 00:58:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 00:58:23,458 INFO L442 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-07-05 00:58:23,458 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-07-05 00:58:23,459 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-07-05 00:58:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-05 00:58:23,460 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 00:58:23,460 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 00:58:23,460 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 00:58:23,461 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 00:58:23,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 00:58:23,461 INFO L82 PathProgramCache]: Analyzing trace with hash 117506990, now seen corresponding path program 1 times [2021-07-05 00:58:23,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 00:58:23,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407257862] [2021-07-05 00:58:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 00:58:23,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 00:58:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 00:58:23,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 00:58:23,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-05 00:58:23,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-05 00:58:23,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-05 00:58:23,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 00:58:23,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 00:58:23,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 00:58:23,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 00:58:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 00:58:23,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 00:58:23,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407257862] [2021-07-05 00:58:23,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407257862] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 00:58:23,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 00:58:23,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-05 00:58:23,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134991153] [2021-07-05 00:58:23,672 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-05 00:58:23,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 00:58:23,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-05 00:58:23,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-05 00:58:23,675 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-07-05 00:58:23,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 00:58:23,715 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-07-05 00:58:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-05 00:58:23,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-07-05 00:58:23,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 00:58:23,716 INFO L225 Difference]: With dead ends: 9 [2021-07-05 00:58:23,716 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 00:58:23,716 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-05 00:58:23,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 00:58:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 00:58:23,717 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) [2021-07-05 00:58:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 00:58:23,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-07-05 00:58:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 00:58:23,717 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 00:58:23,717 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-07-05 00:58:23,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 00:58:23,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 00:58:23,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 00:58:23,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 00:58:23,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 00:58:23,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 00:58:23,752 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 00:58:23,752 INFO L762 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2021-07-05 00:58:23,752 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-07-05 00:58:23,753 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 00:58:23,753 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 00:58:23,753 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 00:58:23,753 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2021-07-05 00:58:23,753 INFO L758 garLoopResultBuilder]: At program point L18(lines 13 20) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0.base|) |ULTIMATE.start_main_~#p1~0.offset|))) (and (= |ULTIMATE.start_f_#res| 1) (not (= |ULTIMATE.start_main_~#a~0.base| .cse0)) (not (= |ULTIMATE.start_main_~#a~0.base| |ULTIMATE.start_main_~#p1~0.base|)) (= (select (select |#memory_int| .cse0) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0.base|) |ULTIMATE.start_main_~#p1~0.offset|)) 0) (= ULTIMATE.start_f_~a 4))) [2021-07-05 00:58:23,754 INFO L758 garLoopResultBuilder]: At program point L47(lines 22 48) the Hoare annotation is: (= ULTIMATE.start_f_~a 4) [2021-07-05 00:58:23,754 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 19) no Hoare annotation was computed. [2021-07-05 00:58:23,754 INFO L758 garLoopResultBuilder]: At program point L41(lines 22 48) the Hoare annotation is: false [2021-07-05 00:58:23,754 INFO L762 garLoopResultBuilder]: For program point L6(lines 6 11) no Hoare annotation was computed. [2021-07-05 00:58:23,754 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-05 00:58:23,754 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 00:58:23,765 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-07-05 00:58:23,766 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-07-05 00:58:23,766 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-07-05 00:58:23,768 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-07-05 00:58:23,768 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-07-05 00:58:23,768 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-07-05 00:58:23,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 12:58:23 BoogieIcfgContainer [2021-07-05 00:58:23,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 00:58:23,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 00:58:23,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 00:58:23,771 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 00:58:23,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 12:58:23" (3/4) ... [2021-07-05 00:58:23,773 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-05 00:58:23,785 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-07-05 00:58:23,785 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-07-05 00:58:23,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 00:58:23,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 00:58:23,802 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\result == 1 && !(a == #memory_$Pointer$[p1][p1])) && !(a == p1)) && unknown-#memory_int-unknown[#memory_$Pointer$[p1][p1]][#memory_$Pointer$[p1][p1]] == 0) && a == 4 [2021-07-05 00:58:23,816 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 00:58:23,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 00:58:23,817 INFO L168 Benchmark]: Toolchain (without parser) took 1364.00 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 31.4 MB in the beginning and 56.6 MB in the end (delta: -25.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 00:58:23,817 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.4 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 00:58:23,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.74 ms. Allocated memory is still 54.5 MB. Free memory was 31.3 MB in the beginning and 37.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-05 00:58:23,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.85 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 37.0 MB in the beginning and 50.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-07-05 00:58:23,818 INFO L168 Benchmark]: Boogie Preprocessor took 27.14 ms. Allocated memory is still 67.1 MB. Free memory was 50.8 MB in the beginning and 49.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 00:58:23,818 INFO L168 Benchmark]: RCFGBuilder took 309.49 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 48.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-07-05 00:58:23,818 INFO L168 Benchmark]: TraceAbstraction took 704.17 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.8 MB in the beginning and 59.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-07-05 00:58:23,819 INFO L168 Benchmark]: Witness Printer took 45.80 ms. Allocated memory is still 81.8 MB. Free memory was 59.7 MB in the beginning and 56.6 MB in the end (delta: 3.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 00:58:23,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.4 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.74 ms. Allocated memory is still 54.5 MB. Free memory was 31.3 MB in the beginning and 37.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.85 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 37.0 MB in the beginning and 50.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.14 ms. Allocated memory is still 67.1 MB. Free memory was 50.8 MB in the beginning and 49.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 309.49 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 48.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 704.17 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.8 MB in the beginning and 59.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 45.80 ms. Allocated memory is still 81.8 MB. Free memory was 59.7 MB in the beginning and 56.6 MB in the end (delta: 3.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: 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 for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 658.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 6.3ms, AutomataDifference: 126.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 31.8ms, InitialAbstractionConstructionTime: 5.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 15 SDslu, 12 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 84.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 38 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 12.4ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 12.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.8ms SsaConstructionTime, 134.3ms SatisfiabilityAnalysisTime, 218.2ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: a == 4 - InvariantResult [Line: 13]: Loop Invariant [2021-07-05 00:58:23,825 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-07-05 00:58:23,825 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-07-05 00:58:23,825 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-07-05 00:58:23,826 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-07-05 00:58:23,826 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-07-05 00:58:23,826 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (((\result == 1 && !(a == #memory_$Pointer$[p1][p1])) && !(a == p1)) && unknown-#memory_int-unknown[#memory_$Pointer$[p1][p1]][#memory_$Pointer$[p1][p1]] == 0) && a == 4 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-07-05 00:58:23,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...