./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/test11.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 de0ee98d0beeed0f9ecb516c00b0addb60c3ca93 .............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 02:10:10,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:10:10,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:10:10,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:10:10,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:10:10,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:10:10,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:10:10,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:10:10,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:10:10,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:10:10,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:10:10,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:10:10,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:10:10,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:10:10,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:10:10,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:10:10,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:10:10,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:10:10,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:10:10,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:10:10,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:10:10,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:10:10,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:10:10,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:10:10,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:10:10,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:10:10,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:10:10,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:10:10,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:10:10,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:10:10,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:10:10,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:10:10,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:10:10,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:10:10,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:10:10,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:10:10,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:10:10,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:10:10,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:10:10,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:10:10,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:10:10,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 02:10:10,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:10:10,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:10:10,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:10:10,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:10:10,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:10:10,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:10:10,760 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:10:10,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:10:10,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:10:10,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 02:10:10,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:10:10,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:10:10,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:10:10,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:10:10,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:10:10,762 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:10:10,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:10:10,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:10:10,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:10:10,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:10:10,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:10:10,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:10:10,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:10:10,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:10:10,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:10:10,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:10:10,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 02:10:10,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 02:10:10,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:10:10,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:10:10,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de0ee98d0beeed0f9ecb516c00b0addb60c3ca93 [2021-08-26 02:10:11,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:10:11,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:10:11,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:10:11,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:10:11,133 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:10:11,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test11.c [2021-08-26 02:10:11,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c850e839/308da8a125e147d6982daa88d1ffca12/FLAG10142dc49 [2021-08-26 02:10:11,589 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:10:11,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test11.c [2021-08-26 02:10:11,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c850e839/308da8a125e147d6982daa88d1ffca12/FLAG10142dc49 [2021-08-26 02:10:12,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c850e839/308da8a125e147d6982daa88d1ffca12 [2021-08-26 02:10:12,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:10:12,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:10:12,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:10:12,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:10:12,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:10:12,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687e8cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12, skipping insertion in model container [2021-08-26 02:10:12,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:10:12,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:10:12,139 WARN L228 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/test11.c[823,836] [2021-08-26 02:10:12,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:10:12,151 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:10:12,172 WARN L228 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/test11.c[823,836] [2021-08-26 02:10:12,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:10:12,187 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:10:12,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12 WrapperNode [2021-08-26 02:10:12,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:10:12,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:10:12,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:10:12,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:10:12,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:10:12,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:10:12,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:10:12,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:10:12,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:10:12,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:10:12,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:10:12,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:10:12,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (1/1) ... [2021-08-26 02:10:12,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:10:12,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:10:12,318 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) [2021-08-26 02:10:12,344 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 [2021-08-26 02:10:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 02:10:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:10:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 02:10:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:10:12,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:10:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 02:10:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:10:12,675 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:10:12,676 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-26 02:10:12,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:10:12 BoogieIcfgContainer [2021-08-26 02:10:12,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:10:12,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:10:12,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:10:12,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:10:12,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:10:12" (1/3) ... [2021-08-26 02:10:12,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a024e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:10:12, skipping insertion in model container [2021-08-26 02:10:12,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:12" (2/3) ... [2021-08-26 02:10:12,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a024e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:10:12, skipping insertion in model container [2021-08-26 02:10:12,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:10:12" (3/3) ... [2021-08-26 02:10:12,711 INFO L111 eAbstractionObserver]: Analyzing ICFG test11.c [2021-08-26 02:10:12,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:10:12,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 02:10:12,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:10:12,774 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 02:10:12,775 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 02:10:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-08-26 02:10:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 02:10:12,793 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:10:12,793 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:10:12,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 02:10:12,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:10:12,800 INFO L82 PathProgramCache]: Analyzing trace with hash 119352371, now seen corresponding path program 1 times [2021-08-26 02:10:12,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:10:12,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684500600] [2021-08-26 02:10:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:10:12,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:10:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:10:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:10:13,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:10:13,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684500600] [2021-08-26 02:10:13,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684500600] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:10:13,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:10:13,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:10:13,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029593554] [2021-08-26 02:10:13,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:10:13,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:10:13,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:10:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:10:13,060 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-08-26 02:10:13,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:10:13,090 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-08-26 02:10:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:10:13,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2021-08-26 02:10:13,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:10:13,097 INFO L225 Difference]: With dead ends: 22 [2021-08-26 02:10:13,097 INFO L226 Difference]: Without dead ends: 12 [2021-08-26 02:10:13,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:10:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-26 02:10:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-26 02:10:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) 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) [2021-08-26 02:10:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-08-26 02:10:13,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2021-08-26 02:10:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:10:13,132 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-08-26 02:10:13,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-08-26 02:10:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-08-26 02:10:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 02:10:13,133 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:10:13,133 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:10:13,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 02:10:13,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 02:10:13,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:10:13,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1264891367, now seen corresponding path program 1 times [2021-08-26 02:10:13,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:10:13,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712930054] [2021-08-26 02:10:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:10:13,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:10:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:10:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:10:13,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:10:13,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712930054] [2021-08-26 02:10:13,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712930054] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:10:13,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:10:13,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 02:10:13,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618229960] [2021-08-26 02:10:13,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:10:13,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:10:13,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:10:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:10:13,255 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:10:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:10:13,308 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-08-26 02:10:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:10:13,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-26 02:10:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:10:13,310 INFO L225 Difference]: With dead ends: 14 [2021-08-26 02:10:13,310 INFO L226 Difference]: Without dead ends: 12 [2021-08-26 02:10:13,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:10:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-26 02:10:13,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-26 02:10:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-08-26 02:10:13,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-08-26 02:10:13,317 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2021-08-26 02:10:13,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:10:13,317 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-08-26 02:10:13,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:10:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-08-26 02:10:13,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 02:10:13,318 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:10:13,319 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:10:13,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 02:10:13,320 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 02:10:13,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:10:13,327 INFO L82 PathProgramCache]: Analyzing trace with hash -556924879, now seen corresponding path program 1 times [2021-08-26 02:10:13,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:10:13,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685512515] [2021-08-26 02:10:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:10:13,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:10:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:10:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:10:13,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:10:13,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685512515] [2021-08-26 02:10:13,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685512515] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:10:13,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:10:13,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:10:13,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104235276] [2021-08-26 02:10:13,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:10:13,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:10:13,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:10:13,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:10:13,417 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-26 02:10:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:10:13,433 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-08-26 02:10:13,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:10:13,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-08-26 02:10:13,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:10:13,435 INFO L225 Difference]: With dead ends: 12 [2021-08-26 02:10:13,435 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 02:10:13,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:10:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 02:10:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 02:10:13,436 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) [2021-08-26 02:10:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 02:10:13,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-08-26 02:10:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:10:13,437 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 02:10:13,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-26 02:10:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 02:10:13,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 02:10:13,441 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:10:13,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 02:10:13,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 02:10:13,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 02:10:13,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 02:10:13,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 02:10:13,474 INFO L853 garLoopResultBuilder]: At program point L33(lines 14 34) the Hoare annotation is: (not (= ULTIMATE.start_main_~pc~0.base 0)) [2021-08-26 02:10:13,474 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 02:10:13,475 INFO L853 garLoopResultBuilder]: At program point L27(lines 14 34) the Hoare annotation is: false [2021-08-26 02:10:13,475 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-08-26 02:10:13,475 INFO L857 garLoopResultBuilder]: For program point L21-2(line 21) no Hoare annotation was computed. [2021-08-26 02:10:13,475 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-08-26 02:10:13,476 INFO L857 garLoopResultBuilder]: For program point L11-2(line 11) no Hoare annotation was computed. [2021-08-26 02:10:13,476 INFO L853 garLoopResultBuilder]: At program point L11-3(lines 9 12) the Hoare annotation is: (and (= ULTIMATE.start_main_~pc~0.base |ULTIMATE.start_main_~#c~0.base|) (= ULTIMATE.start_main_~pc~0.offset |ULTIMATE.start_main_~#c~0.offset|) (not (= ULTIMATE.start_main_~pc~0.base 0))) [2021-08-26 02:10:13,476 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 02:10:13,476 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 02:10:13,476 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 02:10:13,477 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 28) no Hoare annotation was computed. [2021-08-26 02:10:13,477 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2021-08-26 02:10:13,481 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-08-26 02:10:13,481 INFO L857 garLoopResultBuilder]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2021-08-26 02:10:13,485 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 02:10:13,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:10:13 BoogieIcfgContainer [2021-08-26 02:10:13,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 02:10:13,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 02:10:13,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 02:10:13,500 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 02:10:13,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:10:12" (3/4) ... [2021-08-26 02:10:13,503 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 02:10:13,510 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 02:10:13,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 02:10:13,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 02:10:13,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 02:10:13,541 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 02:10:13,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 02:10:13,542 INFO L168 Benchmark]: Toolchain (without parser) took 1531.69 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.1 MB in the beginning and 42.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:13,543 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 40.9 MB in the beginning and 40.9 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:10:13,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.49 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 28.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:13,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.25 ms. Allocated memory is still 58.7 MB. Free memory was 28.3 MB in the beginning and 43.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:13,544 INFO L168 Benchmark]: Boogie Preprocessor took 41.40 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 42.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:10:13,544 INFO L168 Benchmark]: RCFGBuilder took 386.25 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 26.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:13,545 INFO L168 Benchmark]: TraceAbstraction took 792.43 ms. Allocated memory is still 71.3 MB. Free memory was 54.4 MB in the beginning and 45.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:13,545 INFO L168 Benchmark]: Witness Printer took 41.58 ms. Allocated memory is still 71.3 MB. Free memory was 45.2 MB in the beginning and 42.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:13,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 40.9 MB in the beginning and 40.9 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.49 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 28.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.25 ms. Allocated memory is still 58.7 MB. Free memory was 28.3 MB in the beginning and 43.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.40 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 42.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 386.25 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 26.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 792.43 ms. Allocated memory is still 71.3 MB. Free memory was 54.4 MB in the beginning and 45.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Witness Printer took 41.58 ms. Allocated memory is still 71.3 MB. Free memory was 45.2 MB in the beginning and 42.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 32]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 719.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.0ms, AutomataDifference: 127.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 29.3ms, InitialAbstractionConstructionTime: 10.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 23 SDslu, 37 SDs, 0 SdLazy, 24 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 16.3ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 6.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 15.8ms SsaConstructionTime, 86.1ms SatisfiabilityAnalysisTime, 256.6ms InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 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: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(pc == 0) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (pc == c && pc == c) && !(pc == 0) RESULT: Ultimate proved your program to be correct! [2021-08-26 02:10:13,585 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...