./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gcnr2008.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 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/loop-lit/gcnr2008.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 153d29cc59a928b964d34eac87caede5c68a6fb0 ................................................................................................................................................................................................................................................................ 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 0.1.24-678e011 [2019-11-19 21:16:43,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:16:43,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:16:43,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:16:43,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:16:43,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:16:43,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:16:43,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:16:43,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:16:43,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:16:43,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:16:43,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:16:43,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:16:43,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:16:43,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:16:43,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:16:43,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:16:43,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:16:43,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:16:43,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:16:43,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:16:43,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:16:43,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:16:43,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:16:43,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:16:43,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:16:43,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:16:43,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:16:43,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:16:43,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:16:43,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:16:43,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:16:43,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:16:43,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:16:43,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:16:43,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:16:43,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:16:43,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:16:43,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:16:43,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:16:43,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:16:43,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 21:16:43,528 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:16:43,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:16:43,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:16:43,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:16:43,534 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:16:43,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:16:43,534 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:16:43,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:16:43,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:16:43,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:16:43,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:16:43,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:16:43,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:16:43,536 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:16:43,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:16:43,538 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:16:43,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:16:43,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:16:43,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:16:43,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:16:43,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:16:43,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:16:43,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:16:43,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:16:43,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:16:43,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 21:16:43,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:16:43,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:16:43,542 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 -> 153d29cc59a928b964d34eac87caede5c68a6fb0 [2019-11-19 21:16:43,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:16:43,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:16:43,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:16:43,875 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:16:43,875 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:16:43,876 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gcnr2008.i [2019-11-19 21:16:43,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a81fb74da/ad85792002aa48abb127a1b5e63b2571/FLAG14cc11f4d [2019-11-19 21:16:44,341 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:16:44,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gcnr2008.i [2019-11-19 21:16:44,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a81fb74da/ad85792002aa48abb127a1b5e63b2571/FLAG14cc11f4d [2019-11-19 21:16:44,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a81fb74da/ad85792002aa48abb127a1b5e63b2571 [2019-11-19 21:16:44,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:16:44,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:16:44,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:16:44,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:16:44,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:16:44,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:16:44" (1/1) ... [2019-11-19 21:16:44,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209796ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:44, skipping insertion in model container [2019-11-19 21:16:44,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:16:44" (1/1) ... [2019-11-19 21:16:44,792 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:16:44,814 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:16:45,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:16:45,036 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:16:45,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:16:45,069 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:16:45,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45 WrapperNode [2019-11-19 21:16:45,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:16:45,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:16:45,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:16:45,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:16:45,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (1/1) ... [2019-11-19 21:16:45,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (1/1) ... [2019-11-19 21:16:45,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:16:45,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:16:45,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:16:45,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:16:45,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (1/1) ... [2019-11-19 21:16:45,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (1/1) ... [2019-11-19 21:16:45,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (1/1) ... [2019-11-19 21:16:45,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (1/1) ... [2019-11-19 21:16:45,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (1/1) ... [2019-11-19 21:16:45,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (1/1) ... [2019-11-19 21:16:45,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (1/1) ... [2019-11-19 21:16:45,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:16:45,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:16:45,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:16:45,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:16:45,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (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 [2019-11-19 21:16:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:16:45,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:16:45,442 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:16:45,442 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 21:16:45,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:16:45 BoogieIcfgContainer [2019-11-19 21:16:45,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:16:45,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:16:45,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:16:45,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:16:45,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:16:44" (1/3) ... [2019-11-19 21:16:45,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5654e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:16:45, skipping insertion in model container [2019-11-19 21:16:45,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:16:45" (2/3) ... [2019-11-19 21:16:45,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5654e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:16:45, skipping insertion in model container [2019-11-19 21:16:45,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:16:45" (3/3) ... [2019-11-19 21:16:45,451 INFO L109 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2019-11-19 21:16:45,460 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:16:45,465 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:16:45,475 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:16:45,498 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:16:45,498 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:16:45,499 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:16:45,499 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:16:45,499 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:16:45,499 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:16:45,499 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:16:45,500 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:16:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-19 21:16:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-19 21:16:45,517 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:16:45,518 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-19 21:16:45,519 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:16:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:16:45,523 INFO L82 PathProgramCache]: Analyzing trace with hash 30662980, now seen corresponding path program 1 times [2019-11-19 21:16:45,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:16:45,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031970182] [2019-11-19 21:16:45,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:16:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:16:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:16:45,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031970182] [2019-11-19 21:16:45,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:16:45,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 21:16:45,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214503659] [2019-11-19 21:16:45,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:16:45,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:16:45,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:16:45,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:16:45,641 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-11-19 21:16:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:16:45,654 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-19 21:16:45,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:16:45,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-19 21:16:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:16:45,664 INFO L225 Difference]: With dead ends: 24 [2019-11-19 21:16:45,664 INFO L226 Difference]: Without dead ends: 12 [2019-11-19 21:16:45,667 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:16:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-19 21:16:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-19 21:16:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-19 21:16:45,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-19 21:16:45,698 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 5 [2019-11-19 21:16:45,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:16:45,699 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-19 21:16:45,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:16:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2019-11-19 21:16:45,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 21:16:45,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:16:45,700 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-19 21:16:45,700 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:16:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:16:45,700 INFO L82 PathProgramCache]: Analyzing trace with hash 921979909, now seen corresponding path program 1 times [2019-11-19 21:16:45,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:16:45,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506319626] [2019-11-19 21:16:45,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:16:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:16:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:16:45,748 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 21:16:45,749 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 21:16:45,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:16:45 BoogieIcfgContainer [2019-11-19 21:16:45,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:16:45,769 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:16:45,769 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:16:45,769 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:16:45,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:16:45" (3/4) ... [2019-11-19 21:16:45,772 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 21:16:45,812 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 21:16:45,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:16:45,815 INFO L168 Benchmark]: Toolchain (without parser) took 1037.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -98.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-19 21:16:45,816 INFO L168 Benchmark]: CDTParser took 0.25 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. [2019-11-19 21:16:45,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.87 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:16:45,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -147.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 21:16:45,818 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 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. [2019-11-19 21:16:45,819 INFO L168 Benchmark]: RCFGBuilder took 252.46 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: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-11-19 21:16:45,820 INFO L168 Benchmark]: TraceAbstraction took 324.54 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-19 21:16:45,820 INFO L168 Benchmark]: Witness Printer took 43.50 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. [2019-11-19 21:16:45,825 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 292.87 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 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 91.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -147.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.82 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 252.46 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: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 324.54 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Witness Printer took 43.50 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: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int x,y,z,w; [L12] EXPR w = 0 [L12] EXPR z = w = 0 [L12] EXPR y = z = w = 0 [L12] x = y = z = w = 0 [L13] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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...