./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/test08.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 3d186e704599e729d48e81eb495efdc1b4000c01 .......................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 09:05:50,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 09:05:50,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 09:05:50,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 09:05:50,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 09:05:50,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 09:05:50,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 09:05:50,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 09:05:50,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 09:05:50,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 09:05:50,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 09:05:50,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 09:05:50,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 09:05:50,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 09:05:50,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 09:05:50,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 09:05:50,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 09:05:50,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 09:05:50,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 09:05:50,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 09:05:50,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 09:05:50,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 09:05:50,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 09:05:50,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 09:05:50,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 09:05:50,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 09:05:50,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 09:05:50,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 09:05:50,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 09:05:50,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 09:05:50,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 09:05:50,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 09:05:50,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 09:05:50,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 09:05:50,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 09:05:50,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 09:05:50,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 09:05:50,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 09:05:50,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 09:05:50,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 09:05:50,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 09:05:50,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 09:05:50,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 09:05:50,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 09:05:50,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 09:05:50,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 09:05:50,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 09:05:50,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 09:05:50,966 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 09:05:50,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 09:05:50,966 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 09:05:50,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 09:05:50,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 09:05:50,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 09:05:50,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 09:05:50,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 09:05:50,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 09:05:50,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 09:05:50,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 09:05:50,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 09:05:50,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 09:05:50,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 09:05:50,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 09:05:50,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 09:05:50,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:05:50,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 09:05:50,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 09:05:50,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 09:05:50,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 09:05:50,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 09:05:50,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 09:05:50,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 09:05:50,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d186e704599e729d48e81eb495efdc1b4000c01 [2021-08-29 09:05:51,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 09:05:51,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 09:05:51,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 09:05:51,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 09:05:51,333 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 09:05:51,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test08.c [2021-08-29 09:05:51,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6fefb94/a4fc060f3f774c2ca8ecca49dbefaa5d/FLAG462c29eb2 [2021-08-29 09:05:51,816 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 09:05:51,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test08.c [2021-08-29 09:05:51,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6fefb94/a4fc060f3f774c2ca8ecca49dbefaa5d/FLAG462c29eb2 [2021-08-29 09:05:51,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6fefb94/a4fc060f3f774c2ca8ecca49dbefaa5d [2021-08-29 09:05:51,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 09:05:51,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 09:05:51,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 09:05:51,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 09:05:51,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 09:05:51,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:05:51" (1/1) ... [2021-08-29 09:05:51,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da6ab87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:51, skipping insertion in model container [2021-08-29 09:05:51,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:05:51" (1/1) ... [2021-08-29 09:05:51,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 09:05:51,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 09:05:51,965 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/test08.c[578,591] [2021-08-29 09:05:51,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:05:51,974 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 09:05:51,986 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/test08.c[578,591] [2021-08-29 09:05:51,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:05:52,003 INFO L208 MainTranslator]: Completed translation [2021-08-29 09:05:52,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52 WrapperNode [2021-08-29 09:05:52,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 09:05:52,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 09:05:52,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 09:05:52,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 09:05:52,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 09:05:52,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 09:05:52,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 09:05:52,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 09:05:52,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 09:05:52,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 09:05:52,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 09:05:52,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 09:05:52,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (1/1) ... [2021-08-29 09:05:52,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:05:52,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:05:52,118 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) [2021-08-29 09:05:52,126 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 [2021-08-29 09:05:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 09:05:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 09:05:52,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 09:05:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 09:05:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 09:05:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 09:05:52,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 09:05:52,337 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 09:05:52,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:05:52 BoogieIcfgContainer [2021-08-29 09:05:52,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 09:05:52,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 09:05:52,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 09:05:52,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 09:05:52,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:05:51" (1/3) ... [2021-08-29 09:05:52,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cf413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:05:52, skipping insertion in model container [2021-08-29 09:05:52,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:52" (2/3) ... [2021-08-29 09:05:52,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cf413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:05:52, skipping insertion in model container [2021-08-29 09:05:52,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:05:52" (3/3) ... [2021-08-29 09:05:52,347 INFO L111 eAbstractionObserver]: Analyzing ICFG test08.c [2021-08-29 09:05:52,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 09:05:52,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 09:05:52,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 09:05:52,405 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 [2021-08-29 09:05:52,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 09:05:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2021-08-29 09:05:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 09:05:52,456 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:52,457 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 09:05:52,458 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:05:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2021-08-29 09:05:52,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:52,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923869328] [2021-08-29 09:05:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:52,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:05:52,606 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 09:05:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:05:52,670 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 09:05:52,672 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 09:05:52,673 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 09:05:52,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 09:05:52,680 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 09:05:52,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:05:52 BoogieIcfgContainer [2021-08-29 09:05:52,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 09:05:52,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 09:05:52,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 09:05:52,710 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 09:05:52,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:05:52" (3/4) ... [2021-08-29 09:05:52,712 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 09:05:52,766 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 09:05:52,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 09:05:52,769 INFO L158 Benchmark]: Toolchain (without parser) took 927.72ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.8MB in the beginning and 42.3MB in the end (delta: -4.5MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-08-29 09:05:52,769 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:05:52,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.78ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 43.5MB in the end (delta: -5.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 09:05:52,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.57ms. Allocated memory is still 58.7MB. Free memory was 43.3MB in the beginning and 42.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:05:52,771 INFO L158 Benchmark]: Boogie Preprocessor took 26.32ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.9MB in the end (delta: 963.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:05:52,771 INFO L158 Benchmark]: RCFGBuilder took 256.73ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 31.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 09:05:52,772 INFO L158 Benchmark]: TraceAbstraction took 367.07ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 44.4MB in the end (delta: -12.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:05:52,773 INFO L158 Benchmark]: Witness Printer took 57.47ms. Allocated memory is still 71.3MB. Free memory was 44.4MB in the beginning and 42.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 09:05:52,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.78ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 43.5MB in the end (delta: -5.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.57ms. Allocated memory is still 58.7MB. Free memory was 43.3MB in the beginning and 42.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.32ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.9MB in the end (delta: 963.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 256.73ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 31.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 367.07ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 44.4MB in the end (delta: -12.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.47ms. Allocated memory is still 71.3MB. Free memory was 44.4MB in the beginning and 42.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6] int a, b; [L7] int *p1, *p2; VAL [a={7:0}, b={6:0}, p1={0:0}, p2={0:0}] [L21] p1 = &a [L22] p2 = &b [L24] b = 1 [L25] a = 5 [L27] EXPR \read(a) [L27] a-- [L10] EXPR \read(*p1) [L10] EXPR \read(*p2) [L10] EXPR \read(a) [L10] int v = *p1 + *p2 - a; [L11] COND TRUE v == 1 [L12] p1 = p2 [L13] return v; VAL [a={7:0}, b={6:0}, p1={6:0}, p2={6:0}] [L29] a = f() [L31] EXPR \read(a) VAL [a={7:0}, b={6:0}, p1={6:0}, p2={6:0}] [L31] COND TRUE a && p1 == p2 [L38] reach_error() VAL [a={7:0}, b={6:0}, p1={6:0}, p2={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 283.37ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 42.11ms, AutomataDifference: 0.00ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.48ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.49ms SsaConstructionTime, 70.82ms SatisfiabilityAnalysisTime, 0.00ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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! [2021-08-29 09:05:52,827 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...