./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test26-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/test26-2.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 c5617f713954d7209d6b7210dc855bccb3ec884121999fe1b009aa3de39a1bff --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 14:28:05,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 14:28:05,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 14:28:05,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 14:28:05,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 14:28:05,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 14:28:05,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 14:28:05,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 14:28:05,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 14:28:05,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 14:28:05,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 14:28:05,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 14:28:05,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 14:28:05,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 14:28:05,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 14:28:05,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 14:28:05,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 14:28:05,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 14:28:05,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 14:28:05,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 14:28:05,726 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 14:28:05,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 14:28:05,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 14:28:05,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 14:28:05,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 14:28:05,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 14:28:05,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 14:28:05,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 14:28:05,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 14:28:05,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 14:28:05,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 14:28:05,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 14:28:05,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 14:28:05,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 14:28:05,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 14:28:05,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 14:28:05,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 14:28:05,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 14:28:05,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 14:28:05,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 14:28:05,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 14:28:05,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 14:28:05,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 14:28:05,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 14:28:05,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 14:28:05,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 14:28:05,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 14:28:05,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 14:28:05,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 14:28:05,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 14:28:05,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 14:28:05,770 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 14:28:05,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 14:28:05,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 14:28:05,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 14:28:05,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 14:28:05,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 14:28:05,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 14:28:05,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 14:28:05,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 14:28:05,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 14:28:05,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 14:28:05,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 14:28:05,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 14:28:05,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 14:28:05,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 14:28:05,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 14:28:05,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:28:05,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 14:28:05,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 14:28:05,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 14:28:05,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 14:28:05,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 14:28:05,774 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 14:28:05,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 14:28:05,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 14:28:05,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5617f713954d7209d6b7210dc855bccb3ec884121999fe1b009aa3de39a1bff [2022-07-19 14:28:05,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 14:28:05,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 14:28:05,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 14:28:05,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 14:28:05,999 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 14:28:06,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test26-2.c [2022-07-19 14:28:06,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdf02e62/975cd101982547f8953d5c13333d0387/FLAGf84768cb2 [2022-07-19 14:28:06,485 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 14:28:06,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test26-2.c [2022-07-19 14:28:06,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdf02e62/975cd101982547f8953d5c13333d0387/FLAGf84768cb2 [2022-07-19 14:28:06,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdf02e62/975cd101982547f8953d5c13333d0387 [2022-07-19 14:28:06,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 14:28:06,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 14:28:06,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 14:28:06,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 14:28:06,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 14:28:06,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0bbd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06, skipping insertion in model container [2022-07-19 14:28:06,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 14:28:06,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:28:06,667 WARN L230 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/test26-2.c[493,506] [2022-07-19 14:28:06,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:28:06,679 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 14:28:06,692 WARN L230 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/test26-2.c[493,506] [2022-07-19 14:28:06,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:28:06,703 INFO L208 MainTranslator]: Completed translation [2022-07-19 14:28:06,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06 WrapperNode [2022-07-19 14:28:06,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 14:28:06,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 14:28:06,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 14:28:06,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 14:28:06,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,728 INFO L137 Inliner]: procedures = 12, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2022-07-19 14:28:06,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 14:28:06,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 14:28:06,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 14:28:06,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 14:28:06,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 14:28:06,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 14:28:06,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 14:28:06,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 14:28:06,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (1/1) ... [2022-07-19 14:28:06,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:28:06,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:28:06,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 14:28:06,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 14:28:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 14:28:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 14:28:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 14:28:06,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 14:28:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 14:28:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 14:28:06,860 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 14:28:06,861 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 14:28:06,953 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 14:28:06,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 14:28:06,959 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 14:28:06,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:28:06 BoogieIcfgContainer [2022-07-19 14:28:06,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 14:28:06,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 14:28:06,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 14:28:06,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 14:28:06,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 02:28:06" (1/3) ... [2022-07-19 14:28:06,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6ff94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:28:06, skipping insertion in model container [2022-07-19 14:28:06,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:28:06" (2/3) ... [2022-07-19 14:28:06,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6ff94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:28:06, skipping insertion in model container [2022-07-19 14:28:06,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:28:06" (3/3) ... [2022-07-19 14:28:06,968 INFO L111 eAbstractionObserver]: Analyzing ICFG test26-2.c [2022-07-19 14:28:06,979 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 14:28:06,980 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 14:28:07,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 14:28:07,045 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2bac6fdc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5565a5cc [2022-07-19 14:28:07,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 14:28:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) 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) [2022-07-19 14:28:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-19 14:28:07,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:28:07,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-19 14:28:07,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:28:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:28:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 28692805, now seen corresponding path program 1 times [2022-07-19 14:28:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:28:07,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912597646] [2022-07-19 14:28:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:28:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:28:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 14:28:07,189 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 14:28:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 14:28:07,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 14:28:07,237 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 14:28:07,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 14:28:07,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 14:28:07,244 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 14:28:07,248 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 14:28:07,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 02:28:07 BoogieIcfgContainer [2022-07-19 14:28:07,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 14:28:07,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 14:28:07,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 14:28:07,272 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 14:28:07,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:28:06" (3/4) ... [2022-07-19 14:28:07,274 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 14:28:07,312 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 14:28:07,312 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 14:28:07,313 INFO L158 Benchmark]: Toolchain (without parser) took 806.10ms. Allocated memory is still 146.8MB. Free memory was 116.0MB in the beginning and 96.0MB in the end (delta: 20.0MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-07-19 14:28:07,316 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:28:07,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.28ms. Allocated memory is still 146.8MB. Free memory was 116.0MB in the beginning and 123.7MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 14:28:07,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.73ms. Allocated memory is still 146.8MB. Free memory was 123.7MB in the beginning and 122.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 14:28:07,318 INFO L158 Benchmark]: Boogie Preprocessor took 18.14ms. Allocated memory is still 146.8MB. Free memory was 122.4MB in the beginning and 121.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:28:07,319 INFO L158 Benchmark]: RCFGBuilder took 212.82ms. Allocated memory is still 146.8MB. Free memory was 121.2MB in the beginning and 112.4MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 14:28:07,319 INFO L158 Benchmark]: TraceAbstraction took 307.02ms. Allocated memory is still 146.8MB. Free memory was 111.6MB in the beginning and 97.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 14:28:07,319 INFO L158 Benchmark]: Witness Printer took 41.01ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 96.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:28:07,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.28ms. Allocated memory is still 146.8MB. Free memory was 116.0MB in the beginning and 123.7MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.73ms. Allocated memory is still 146.8MB. Free memory was 123.7MB in the beginning and 122.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.14ms. Allocated memory is still 146.8MB. Free memory was 122.4MB in the beginning and 121.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 212.82ms. Allocated memory is still 146.8MB. Free memory was 121.2MB in the beginning and 112.4MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 307.02ms. Allocated memory is still 146.8MB. Free memory was 111.6MB in the beginning and 97.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 41.01ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 96.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5-L7] struct dummy { int a, b; } global = {0, 1}; VAL [global={4:0}] [L16] struct dummy *pd = &global; [L18] CALL assign(&pd->b, &pd->b) [L11] EXPR \read(*pb) [L11] *pa = *pb [L18] RET assign(&pd->b, &pd->b) [L20] EXPR pd->a [L20] EXPR global.b VAL [global={4:0}, global.b=1, pd={4:0}, pd->a=0] [L20] COND TRUE pd->a != global.b [L26] reach_error() VAL [global={4:0}, pd={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate proved your program to be incorrect! [2022-07-19 14:28:07,350 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE