./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test01.c --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/test01.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 34eec5be4e53dedb20a9fee588f2a00f3bfc3218 ............................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:57:24,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:57:24,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:57:24,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:57:24,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:57:24,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:57:24,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:57:24,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:57:24,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:57:24,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:57:24,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:57:24,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:57:24,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:57:24,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:57:24,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:57:24,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:57:24,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:57:24,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:57:24,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:57:24,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:57:24,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:57:24,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:57:24,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:57:24,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:57:24,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:24,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:24,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:24,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:24,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:24,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:24,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:24,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:24,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:24,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:24,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:24,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:24,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:24,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:24,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:24,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:24,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:24,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:57:24,640 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:24,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:24,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:24,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:24,644 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:24,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:24,645 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:24,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:57:24,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:24,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:24,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:24,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:24,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:24,648 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:24,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:24,648 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:24,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:24,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:24,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:24,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:24,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:24,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:24,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:24,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:24,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:24,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:57:24,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:57:24,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:24,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:24,651 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 -> 34eec5be4e53dedb20a9fee588f2a00f3bfc3218 [2019-11-28 16:57:24,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:24,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:24,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:24,979 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:24,979 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:24,980 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test01.c [2019-11-28 16:57:25,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebd850a1/e20b058b32ea4cf085b7d8ce5c09962e/FLAG6c65e0f56 [2019-11-28 16:57:25,528 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:25,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test01.c [2019-11-28 16:57:25,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebd850a1/e20b058b32ea4cf085b7d8ce5c09962e/FLAG6c65e0f56 [2019-11-28 16:57:25,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebd850a1/e20b058b32ea4cf085b7d8ce5c09962e [2019-11-28 16:57:25,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:25,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:25,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:25,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:25,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:25,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:25" (1/1) ... [2019-11-28 16:57:25,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762a845e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:25, skipping insertion in model container [2019-11-28 16:57:25,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:25" (1/1) ... [2019-11-28 16:57:25,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:25,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:57:26,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:26,149 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:57:26,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:26,191 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:57:26,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26 WrapperNode [2019-11-28 16:57:26,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:26,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:26,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:57:26,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:57:26,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (1/1) ... [2019-11-28 16:57:26,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (1/1) ... [2019-11-28 16:57:26,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:26,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:57:26,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:57:26,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:57:26,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (1/1) ... [2019-11-28 16:57:26,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (1/1) ... [2019-11-28 16:57:26,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (1/1) ... [2019-11-28 16:57:26,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (1/1) ... [2019-11-28 16:57:26,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (1/1) ... [2019-11-28 16:57:26,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (1/1) ... [2019-11-28 16:57:26,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (1/1) ... [2019-11-28 16:57:26,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:57:26,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:57:26,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:57:26,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:57:26,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (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 16:57:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:57:26,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:57:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:57:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:57:26,525 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:57:26,526 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 16:57:26,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:26 BoogieIcfgContainer [2019-11-28 16:57:26,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:57:26,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:57:26,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:57:26,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:57:26,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:25" (1/3) ... [2019-11-28 16:57:26,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1f017b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:26, skipping insertion in model container [2019-11-28 16:57:26,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:26" (2/3) ... [2019-11-28 16:57:26,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1f017b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:26, skipping insertion in model container [2019-11-28 16:57:26,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:26" (3/3) ... [2019-11-28 16:57:26,534 INFO L109 eAbstractionObserver]: Analyzing ICFG test01.c [2019-11-28 16:57:26,542 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:57:26,549 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:57:26,561 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:57:26,588 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:57:26,588 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:57:26,588 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:57:26,588 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:57:26,589 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:57:26,589 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:57:26,589 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:57:26,590 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:57:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-28 16:57:26,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:57:26,608 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:26,609 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:57:26,609 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:26,617 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-11-28 16:57:26,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:26,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787425612] [2019-11-28 16:57:26,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:26,782 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 16:57:26,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787425612] [2019-11-28 16:57:26,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:26,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 16:57:26,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706140091] [2019-11-28 16:57:26,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:57:26,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:57:26,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:57:26,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:57:26,811 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-11-28 16:57:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:26,843 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-28 16:57:26,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:57:26,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 16:57:26,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:26,856 INFO L225 Difference]: With dead ends: 11 [2019-11-28 16:57:26,857 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:57:26,860 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 16:57:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:57:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:57:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:57:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:57:26,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-28 16:57:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:26,898 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:57:26,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:57:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:57:26,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:57:26,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:57:26,915 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:57:26,915 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:57:26,915 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:57:26,916 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:57:26,916 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2019-11-28 16:57:26,917 INFO L242 CegarLoopResult]: At program point L16(lines 4 17) the Hoare annotation is: (not (= ULTIMATE.start_main_~p1~0.base ULTIMATE.start_main_~p2~0.base)) [2019-11-28 16:57:26,918 INFO L242 CegarLoopResult]: At program point L10(lines 4 17) the Hoare annotation is: false [2019-11-28 16:57:26,918 INFO L246 CegarLoopResult]: For program point L9(lines 9 11) no Hoare annotation was computed. [2019-11-28 16:57:26,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:57:26 BoogieIcfgContainer [2019-11-28 16:57:26,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:57:26,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:57:26,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:57:26,935 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:57:26,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:26" (3/4) ... [2019-11-28 16:57:26,938 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:57:26,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-28 16:57:26,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 16:57:26,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:57:26,990 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:57:26,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:57:26,994 INFO L168 Benchmark]: Toolchain (without parser) took 1077.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -124.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:26,994 INFO L168 Benchmark]: CDTParser took 0.88 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 16:57:26,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:26,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:26,997 INFO L168 Benchmark]: Boogie Preprocessor took 18.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:26,998 INFO L168 Benchmark]: RCFGBuilder took 229.16 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:26,998 INFO L168 Benchmark]: TraceAbstraction took 405.96 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:26,999 INFO L168 Benchmark]: Witness Printer took 56.81 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. [2019-11-28 16:57:27,004 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 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 276.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 86.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 229.16 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 405.96 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 56.81 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: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: !(p1 == p2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 1 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=8occurred 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 5 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 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 correct! Received shutdown request...