./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test28-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/test28-1.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ab8dcad35597bc77a09246c20c802a7c0b3d86b ............................................................................................................................................................................................................................................................................................................ 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 0.1.24-30f4e4a [2019-11-27 23:53:28,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:53:28,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:53:28,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:53:28,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:53:28,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:53:28,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:53:28,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:53:28,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:53:28,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:53:28,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:53:28,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:53:28,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:53:28,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:53:28,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:53:28,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:53:28,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:53:28,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:53:28,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:53:28,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:53:28,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:53:28,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:53:28,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:53:28,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:53:28,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:53:28,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:53:28,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:53:28,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:53:28,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:53:28,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:53:28,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:53:28,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:53:28,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:53:28,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:53:28,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:53:28,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:53:28,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:53:28,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:53:28,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:53:28,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:53:28,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:53:28,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:53:28,641 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:53:28,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:53:28,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:53:28,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:53:28,648 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:53:28,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:53:28,648 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:53:28,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:53:28,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:53:28,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:53:28,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:53:28,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:53:28,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:53:28,650 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:53:28,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:53:28,650 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:53:28,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:53:28,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:53:28,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:53:28,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:53:28,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:53:28,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:28,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:53:28,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:53:28,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:53:28,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:53:28,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:53:28,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:53:28,653 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 -> 4ab8dcad35597bc77a09246c20c802a7c0b3d86b [2019-11-27 23:53:28,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:53:28,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:53:28,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:53:28,964 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:53:28,965 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:53:28,965 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test28-1.c [2019-11-27 23:53:29,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2008cc1d/941fbccaf11344e1b333ee908f680642/FLAGe0debb993 [2019-11-27 23:53:29,518 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:53:29,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test28-1.c [2019-11-27 23:53:29,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2008cc1d/941fbccaf11344e1b333ee908f680642/FLAGe0debb993 [2019-11-27 23:53:29,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2008cc1d/941fbccaf11344e1b333ee908f680642 [2019-11-27 23:53:29,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:53:29,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:53:29,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:29,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:53:29,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:53:29,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:29" (1/1) ... [2019-11-27 23:53:29,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f061439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:29, skipping insertion in model container [2019-11-27 23:53:29,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:29" (1/1) ... [2019-11-27 23:53:29,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:53:29,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:30,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:30,220 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:30,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:30,258 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:30,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30 WrapperNode [2019-11-27 23:53:30,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:30,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:30,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:30,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:30,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:30,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:30,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:30,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:30,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:30,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:30,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:30,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:30,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (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 [2019-11-27 23:53:30,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:53:30,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:30,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:53:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:53:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:53:30,672 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:30,672 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-27 23:53:30,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:30 BoogieIcfgContainer [2019-11-27 23:53:30,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:30,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:30,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:30,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:30,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:53:29" (1/3) ... [2019-11-27 23:53:30,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467a3740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:30, skipping insertion in model container [2019-11-27 23:53:30,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (2/3) ... [2019-11-27 23:53:30,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467a3740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:30, skipping insertion in model container [2019-11-27 23:53:30,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:30" (3/3) ... [2019-11-27 23:53:30,681 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-1.c [2019-11-27 23:53:30,691 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:30,698 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:53:30,711 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:53:30,733 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:30,734 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:30,734 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:30,734 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:30,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:30,734 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:30,734 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:30,735 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:30,750 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-27 23:53:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:53:30,756 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:30,757 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:30,758 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:30,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:30,765 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2019-11-27 23:53:30,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:30,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465298502] [2019-11-27 23:53:30,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:30,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465298502] [2019-11-27 23:53:30,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:30,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-27 23:53:30,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841883485] [2019-11-27 23:53:31,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 23:53:31,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:31,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 23:53:31,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:53:31,040 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 5 states. [2019-11-27 23:53:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:31,157 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-11-27 23:53:31,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:53:31,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-27 23:53:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:31,167 INFO L225 Difference]: With dead ends: 28 [2019-11-27 23:53:31,167 INFO L226 Difference]: Without dead ends: 17 [2019-11-27 23:53:31,170 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:53:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-27 23:53:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2019-11-27 23:53:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-27 23:53:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-27 23:53:31,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2019-11-27 23:53:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:31,200 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-27 23:53:31,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 23:53:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-27 23:53:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:53:31,201 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:31,202 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:31,202 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:31,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:31,202 INFO L82 PathProgramCache]: Analyzing trace with hash -592221650, now seen corresponding path program 1 times [2019-11-27 23:53:31,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:31,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995510877] [2019-11-27 23:53:31,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:31,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995510877] [2019-11-27 23:53:31,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:31,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-27 23:53:31,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557464971] [2019-11-27 23:53:31,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-27 23:53:31,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:31,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-27 23:53:31,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:53:31,305 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2019-11-27 23:53:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:31,429 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-11-27 23:53:31,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-27 23:53:31,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-27 23:53:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:31,430 INFO L225 Difference]: With dead ends: 19 [2019-11-27 23:53:31,430 INFO L226 Difference]: Without dead ends: 10 [2019-11-27 23:53:31,431 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-27 23:53:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-27 23:53:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-27 23:53:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-27 23:53:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-27 23:53:31,435 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2019-11-27 23:53:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:31,435 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-27 23:53:31,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-27 23:53:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-27 23:53:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:53:31,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:31,436 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:31,436 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:31,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1180938670, now seen corresponding path program 1 times [2019-11-27 23:53:31,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:31,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544109091] [2019-11-27 23:53:31,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:31,528 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:53:31,528 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:53:31,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:53:31 BoogieIcfgContainer [2019-11-27 23:53:31,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:53:31,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:53:31,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:53:31,569 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:53:31,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:30" (3/4) ... [2019-11-27 23:53:31,573 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:53:31,630 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:53:31,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:53:31,634 INFO L168 Benchmark]: Toolchain (without parser) took 1724.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -103.1 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:31,634 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:53:31,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.01 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 942.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:31,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -198.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:31,637 INFO L168 Benchmark]: Boogie Preprocessor took 35.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:31,638 INFO L168 Benchmark]: RCFGBuilder took 274.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:31,639 INFO L168 Benchmark]: TraceAbstraction took 893.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:31,639 INFO L168 Benchmark]: Witness Printer took 61.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:31,644 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.01 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 942.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 102.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -198.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 274.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 893.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * Witness Printer took 61.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] struct dummy d1, d2; [L13] int n = __VERIFIER_nondet_int(); [L14] EXPR n ? &d1 : &d2 [L14] struct dummy *pd = n ? &d1 : &d2; [L15] COND TRUE pd == &d2 [L16] pd->a = 0 [L20] pd == &d2 && d2.b != 0 [L20] EXPR d2.b [L20] pd == &d2 && d2.b != 0 [L20] COND TRUE pd == &d2 && d2.b != 0 [L26] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 45 SDslu, 26 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...