./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/mutex_lock_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/mutex_lock_int.i -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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c976dd79cabe443ac09b5b35c5674998e922b27b ..................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-11-28 16:57:09,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:57:09,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:57:09,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:57:09,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:57:09,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:57:09,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:57:09,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:57:09,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:57:09,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:57:09,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:57:09,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:57:09,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:57:09,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:57:09,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:57:09,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:57:09,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:57:09,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:57:09,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:57:09,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:57:09,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:57:09,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:57:09,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:57:09,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:57:09,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:09,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:09,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:09,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:09,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:09,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:09,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:09,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:09,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:09,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:09,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:09,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:09,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:09,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:09,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:09,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:09,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:09,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:57:09,997 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:09,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:09,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:09,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:10,000 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:10,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:10,000 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:10,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:57:10,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:10,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:10,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:10,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:10,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:10,003 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:10,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:10,004 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:10,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:10,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:10,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:10,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:10,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:10,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:10,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:10,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:10,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:10,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:57:10,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:57:10,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:10,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:10,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> c976dd79cabe443ac09b5b35c5674998e922b27b [2019-11-28 16:57:10,307 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:10,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:10,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:10,326 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:10,326 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:10,327 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2019-11-28 16:57:10,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025d2d46d/252c163197184aa3ab7cd2b30e173554/FLAG6d34cddf4 [2019-11-28 16:57:10,806 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:10,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2019-11-28 16:57:10,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025d2d46d/252c163197184aa3ab7cd2b30e173554/FLAG6d34cddf4 [2019-11-28 16:57:11,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025d2d46d/252c163197184aa3ab7cd2b30e173554 [2019-11-28 16:57:11,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:11,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:11,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:11,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:11,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:11,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d5dc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11, skipping insertion in model container [2019-11-28 16:57:11,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:11,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:57:11,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:11,448 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:57:11,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:11,474 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:57:11,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11 WrapperNode [2019-11-28 16:57:11,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:11,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:11,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:57:11,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:57:11,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:11,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:57:11,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:57:11,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:57:11,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... [2019-11-28 16:57:11,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:57:11,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:57:11,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:57:11,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:57:11,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:57:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:57:11,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:57:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:57:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:57:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:57:11,858 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:57:11,859 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-28 16:57:11,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:11 BoogieIcfgContainer [2019-11-28 16:57:11,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:57:11,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:57:11,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:57:11,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:57:11,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:11" (1/3) ... [2019-11-28 16:57:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a48de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:11, skipping insertion in model container [2019-11-28 16:57:11,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:11" (2/3) ... [2019-11-28 16:57:11,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a48de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:11, skipping insertion in model container [2019-11-28 16:57:11,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:11" (3/3) ... [2019-11-28 16:57:11,892 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.i [2019-11-28 16:57:11,924 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:57:11,939 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 16:57:11,958 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 16:57:11,986 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:57:11,987 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:57:11,987 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:57:11,987 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:57:11,987 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:57:11,988 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:57:11,988 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:57:11,988 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:57:12,004 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 16:57:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:57:12,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:12,009 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:57:12,009 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:12,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:12,014 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-28 16:57:12,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:12,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575978280] [2019-11-28 16:57:12,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:57:12,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575978280] [2019-11-28 16:57:12,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:12,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 16:57:12,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755634] [2019-11-28 16:57:12,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:57:12,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:57:12,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:57:12,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:57:12,224 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-28 16:57:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:12,276 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-28 16:57:12,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:57:12,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 16:57:12,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:12,290 INFO L225 Difference]: With dead ends: 25 [2019-11-28 16:57:12,290 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 16:57:12,295 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:57:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 16:57:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 16:57:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 16:57:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-28 16:57:12,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-11-28 16:57:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:12,334 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-28 16:57:12,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:57:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-28 16:57:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 16:57:12,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:12,336 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:12,337 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:12,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-11-28 16:57:12,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:12,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362561505] [2019-11-28 16:57:12,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:12,430 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:57:12,431 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:57:12,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:57:12 BoogieIcfgContainer [2019-11-28 16:57:12,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:57:12,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:57:12,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:57:12,461 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:57:12,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:11" (3/4) ... [2019-11-28 16:57:12,463 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:57:12,499 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:57:12,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:57:12,502 INFO L168 Benchmark]: Toolchain (without parser) took 1270.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -101.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:12,504 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:12,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.66 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:12,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:12,509 INFO L168 Benchmark]: Boogie Preprocessor took 30.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:12,510 INFO L168 Benchmark]: RCFGBuilder took 267.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:12,511 INFO L168 Benchmark]: TraceAbstraction took 594.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:12,512 INFO L168 Benchmark]: Witness Printer took 38.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:12,519 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 242.66 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 89.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 267.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 594.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * Witness Printer took 38.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] int m; [L31] m = 0 [L18] EXPR \read(*a) [L18] COND FALSE !(*a == 1) [L19] *a = 1 [L18] EXPR \read(*a) [L18] COND TRUE *a == 1 [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...