./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_while_int.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/test_while_int.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a78e5ac8a70d10b48fa6c5955c8640de4def14b ............................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:59:24,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:59:24,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:59:24,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:59:24,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:59:24,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:59:24,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:59:24,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:59:24,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:59:24,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:59:24,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:59:24,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:59:24,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:59:24,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:59:24,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:59:24,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:59:24,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:59:24,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:59:24,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:59:24,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:59:24,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:59:24,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:59:24,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:59:24,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:59:24,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:59:24,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:59:24,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:59:24,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:59:24,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:59:24,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:59:24,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:59:24,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:59:24,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:59:24,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:59:24,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:59:24,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:59:24,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:59:24,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:59:24,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:59:24,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:59:24,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:59:24,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:59:24,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:59:24,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:59:24,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:59:24,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:59:24,623 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:59:24,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:59:24,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:59:24,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:59:24,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:59:24,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:59:24,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:59:24,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:59:24,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:59:24,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:59:24,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:59:24,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:59:24,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:59:24,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:59:24,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:59:24,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:59:24,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:59:24,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:59:24,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:59:24,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:59:24,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:59:24,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:59:24,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:59:24,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:59:24,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:59:24,630 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 -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2020-07-28 17:59:24,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:59:24,964 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:59:24,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:59:24,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:59:24,971 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:59:24,972 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_while_int.i [2020-07-28 17:59:25,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3937a1f97/a494f6af7ab34f43a21b5313eb724528/FLAGac2c2b691 [2020-07-28 17:59:25,493 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:59:25,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.i [2020-07-28 17:59:25,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3937a1f97/a494f6af7ab34f43a21b5313eb724528/FLAGac2c2b691 [2020-07-28 17:59:25,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3937a1f97/a494f6af7ab34f43a21b5313eb724528 [2020-07-28 17:59:25,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:59:25,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:59:25,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:59:25,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:59:25,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:59:25,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e32e189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25, skipping insertion in model container [2020-07-28 17:59:25,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:59:25,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:59:26,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:59:26,150 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:59:26,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:59:26,182 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:59:26,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26 WrapperNode [2020-07-28 17:59:26,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:59:26,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:59:26,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:59:26,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:59:26,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (1/1) ... [2020-07-28 17:59:26,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (1/1) ... [2020-07-28 17:59:26,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:59:26,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:59:26,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:59:26,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:59:26,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (1/1) ... [2020-07-28 17:59:26,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (1/1) ... [2020-07-28 17:59:26,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (1/1) ... [2020-07-28 17:59:26,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (1/1) ... [2020-07-28 17:59:26,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (1/1) ... [2020-07-28 17:59:26,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (1/1) ... [2020-07-28 17:59:26,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (1/1) ... [2020-07-28 17:59:26,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:59:26,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:59:26,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:59:26,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:59:26,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (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 [2020-07-28 17:59:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:59:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:59:26,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:59:26,569 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-28 17:59:26,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:59:26 BoogieIcfgContainer [2020-07-28 17:59:26,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:59:26,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:59:26,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:59:26,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:59:26,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:59:25" (1/3) ... [2020-07-28 17:59:26,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d063fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:59:26, skipping insertion in model container [2020-07-28 17:59:26,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:26" (2/3) ... [2020-07-28 17:59:26,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d063fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:59:26, skipping insertion in model container [2020-07-28 17:59:26,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:59:26" (3/3) ... [2020-07-28 17:59:26,582 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2020-07-28 17:59:26,605 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:59:26,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:59:26,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:59:26,701 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:59:26,701 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:59:26,702 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:59:26,702 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:59:26,702 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:59:26,702 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:59:26,702 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:59:26,702 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:59:26,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 17:59:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:59:26,730 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:59:26,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:59:26,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:59:26,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:59:26,739 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2020-07-28 17:59:26,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:59:26,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548173761] [2020-07-28 17:59:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:59:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:26,969 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} havoc main_#res;havoc main_#t~post0, main_~i~0;main_~i~0 := 0; {14#(<= ULTIMATE.start_main_~i~0 0)} is VALID [2020-07-28 17:59:26,972 INFO L280 TraceCheckUtils]: 1: Hoare triple {14#(<= ULTIMATE.start_main_~i~0 0)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0;check_error_#in~b := (if 3 != main_~i~0 then 1 else 0);havoc check_error_~b;check_error_~b := check_error_#in~b; {15#(not (= 0 ULTIMATE.start_check_error_~b))} is VALID [2020-07-28 17:59:26,975 INFO L280 TraceCheckUtils]: 2: Hoare triple {15#(not (= 0 ULTIMATE.start_check_error_~b))} assume !(0 != check_error_~b); {13#false} is VALID [2020-07-28 17:59:26,975 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:59:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:59:26,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548173761] [2020-07-28 17:59:26,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:59:26,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 17:59:26,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242182536] [2020-07-28 17:59:26,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:59:26,990 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:59:26,995 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 17:59:27,013 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:27,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 17:59:27,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:59:27,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 17:59:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:59:27,030 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-07-28 17:59:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:27,142 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2020-07-28 17:59:27,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:59:27,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:59:27,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:59:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:59:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2020-07-28 17:59:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:59:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2020-07-28 17:59:27,153 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 26 transitions. [2020-07-28 17:59:27,230 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:27,241 INFO L225 Difference]: With dead ends: 19 [2020-07-28 17:59:27,241 INFO L226 Difference]: Without dead ends: 7 [2020-07-28 17:59:27,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:59:27,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-07-28 17:59:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-28 17:59:27,284 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:59:27,284 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states. Second operand 7 states. [2020-07-28 17:59:27,285 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:59:27,285 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:59:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:27,288 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2020-07-28 17:59:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-07-28 17:59:27,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:27,289 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:27,289 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:59:27,289 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:59:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:27,291 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2020-07-28 17:59:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-07-28 17:59:27,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:27,292 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:27,292 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:59:27,292 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:59:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:59:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-07-28 17:59:27,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2020-07-28 17:59:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:59:27,296 INFO L479 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-07-28 17:59:27,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 17:59:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-07-28 17:59:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:59:27,297 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:59:27,297 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-07-28 17:59:27,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:59:27,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:59:27,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:59:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2020-07-28 17:59:27,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:59:27,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371507208] [2020-07-28 17:59:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:59:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:27,369 INFO L280 TraceCheckUtils]: 0: Hoare triple {65#true} havoc main_#res;havoc main_#t~post0, main_~i~0;main_~i~0 := 0; {67#(<= ULTIMATE.start_main_~i~0 0)} is VALID [2020-07-28 17:59:27,371 INFO L280 TraceCheckUtils]: 1: Hoare triple {67#(<= ULTIMATE.start_main_~i~0 0)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0;check_error_#in~b := (if 3 != main_~i~0 then 1 else 0);havoc check_error_~b;check_error_~b := check_error_#in~b; {68#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-28 17:59:27,372 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#(<= ULTIMATE.start_main_~i~0 1)} assume 0 != check_error_~b; {68#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-28 17:59:27,374 INFO L280 TraceCheckUtils]: 3: Hoare triple {68#(<= ULTIMATE.start_main_~i~0 1)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0;check_error_#in~b := (if 3 != main_~i~0 then 1 else 0);havoc check_error_~b;check_error_~b := check_error_#in~b; {69#(not (= 0 ULTIMATE.start_check_error_~b))} is VALID [2020-07-28 17:59:27,375 INFO L280 TraceCheckUtils]: 4: Hoare triple {69#(not (= 0 ULTIMATE.start_check_error_~b))} assume !(0 != check_error_~b); {66#false} is VALID [2020-07-28 17:59:27,376 INFO L280 TraceCheckUtils]: 5: Hoare triple {66#false} assume !false; {66#false} is VALID [2020-07-28 17:59:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:59:27,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371507208] [2020-07-28 17:59:27,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497909264] [2020-07-28 17:59:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-28 17:59:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:27,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-28 17:59:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:27,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:59:27,619 INFO L523 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-28 17:59:27,701 INFO L280 TraceCheckUtils]: 0: Hoare triple {65#true} havoc main_#res;havoc main_#t~post0, main_~i~0;main_~i~0 := 0; {67#(<= ULTIMATE.start_main_~i~0 0)} is VALID [2020-07-28 17:59:27,703 INFO L280 TraceCheckUtils]: 1: Hoare triple {67#(<= ULTIMATE.start_main_~i~0 0)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0;check_error_#in~b := (if 3 != main_~i~0 then 1 else 0);havoc check_error_~b;check_error_~b := check_error_#in~b; {68#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-28 17:59:27,705 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#(<= ULTIMATE.start_main_~i~0 1)} assume 0 != check_error_~b; {68#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-28 17:59:27,706 INFO L280 TraceCheckUtils]: 3: Hoare triple {68#(<= ULTIMATE.start_main_~i~0 1)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0;check_error_#in~b := (if 3 != main_~i~0 then 1 else 0);havoc check_error_~b;check_error_~b := check_error_#in~b; {82#(<= 1 ULTIMATE.start_check_error_~b)} is VALID [2020-07-28 17:59:27,708 INFO L280 TraceCheckUtils]: 4: Hoare triple {82#(<= 1 ULTIMATE.start_check_error_~b)} assume !(0 != check_error_~b); {66#false} is VALID [2020-07-28 17:59:27,708 INFO L280 TraceCheckUtils]: 5: Hoare triple {66#false} assume !false; {66#false} is VALID [2020-07-28 17:59:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:59:27,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-28 17:59:27,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-28 17:59:27,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115124001] [2020-07-28 17:59:27,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-07-28 17:59:27,712 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:59:27,712 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-28 17:59:27,726 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:27,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-28 17:59:27,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:59:27,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-28 17:59:27,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-28 17:59:27,728 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2020-07-28 17:59:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:27,806 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-28 17:59:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-28 17:59:27,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-07-28 17:59:27,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:59:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:59:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 12 transitions. [2020-07-28 17:59:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:59:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 12 transitions. [2020-07-28 17:59:27,809 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 12 transitions. [2020-07-28 17:59:27,828 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:27,829 INFO L225 Difference]: With dead ends: 12 [2020-07-28 17:59:27,829 INFO L226 Difference]: Without dead ends: 10 [2020-07-28 17:59:27,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:59:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-28 17:59:27,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-28 17:59:27,839 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:59:27,839 INFO L82 GeneralOperation]: Start isEquivalent. First operand 10 states. Second operand 9 states. [2020-07-28 17:59:27,840 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 9 states. [2020-07-28 17:59:27,840 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 9 states. [2020-07-28 17:59:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:27,841 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-07-28 17:59:27,842 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-07-28 17:59:27,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:27,842 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:27,842 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand 10 states. [2020-07-28 17:59:27,843 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 10 states. [2020-07-28 17:59:27,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:27,844 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-07-28 17:59:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-07-28 17:59:27,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:27,845 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:27,845 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:59:27,845 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:59:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-28 17:59:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-07-28 17:59:27,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2020-07-28 17:59:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:59:27,847 INFO L479 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-07-28 17:59:27,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-28 17:59:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-07-28 17:59:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-28 17:59:27,848 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:59:27,848 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2020-07-28 17:59:28,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-28 17:59:28,061 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:59:28,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:59:28,062 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2020-07-28 17:59:28,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:59:28,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973426742] [2020-07-28 17:59:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:59:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:59:28,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:59:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:59:28,090 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:59:28,104 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:59:28,104 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:59:28,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 17:59:28,121 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:59:28,122 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:59:28,122 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:59:28,122 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:59:28,122 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2020-07-28 17:59:28,122 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-28 17:59:28,122 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-28 17:59:28,123 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-28 17:59:28,123 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:59:28,123 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:59:28,123 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:59:28,123 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:59:28,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:59:28 BoogieIcfgContainer [2020-07-28 17:59:28,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:59:28,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:59:28,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:59:28,126 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:59:28,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:59:26" (3/4) ... [2020-07-28 17:59:28,129 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 17:59:28,174 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:59:28,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:59:28,178 INFO L168 Benchmark]: Toolchain (without parser) took 2289.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 960.2 MB in the beginning and 994.6 MB in the end (delta: -34.3 MB). Peak memory consumption was 95.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:28,179 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:59:28,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.11 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:28,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -177.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:28,181 INFO L168 Benchmark]: Boogie Preprocessor took 26.01 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. [2020-07-28 17:59:28,182 INFO L168 Benchmark]: RCFGBuilder took 270.22 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:28,183 INFO L168 Benchmark]: TraceAbstraction took 1551.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.9 MB). Peak memory consumption was 99.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:28,183 INFO L168 Benchmark]: Witness Printer took 48.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 994.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:28,188 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.11 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 92.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -177.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.01 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 270.22 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1551.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.9 MB). Peak memory consumption was 99.9 MB. Max. memory is 11.5 GB. * Witness Printer took 48.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 994.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int i=0; [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 7 SDslu, 15 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 3 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...