./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/count_by_1_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-new/count_by_1_variant.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 2c35b63020039b8235bc0a118d8fbb9fe59d3a09 .................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:02:52,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:02:52,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:02:52,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:02:52,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:02:52,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:02:52,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:02:52,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:02:52,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:02:52,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:02:52,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:02:52,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:02:52,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:02:52,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:02:52,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:02:52,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:02:52,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:02:52,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:02:52,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:02:52,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:02:52,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:02:52,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:02:52,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:02:52,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:02:52,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:02:52,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:02:52,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:02:52,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:02:52,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:02:52,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:02:52,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:02:52,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:02:52,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:02:52,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:02:52,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:02:52,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:02:52,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:02:52,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:02:52,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:02:52,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:02:52,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:02:52,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:02:52,762 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:02:52,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:02:52,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:02:52,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:02:52,768 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:02:52,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:02:52,771 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:02:52,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:02:52,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:02:52,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:02:52,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:02:52,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:02:52,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:02:52,774 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:02:52,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:02:52,775 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:02:52,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:02:52,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:02:52,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:02:52,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:02:52,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:02:52,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:02:52,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:02:52,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:02:52,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:02:52,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:02:52,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:02:52,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:02:52,779 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 -> 2c35b63020039b8235bc0a118d8fbb9fe59d3a09 [2019-11-28 00:02:53,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:02:53,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:02:53,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:02:53,101 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:02:53,101 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:02:53,102 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/count_by_1_variant.i [2019-11-28 00:02:53,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6921b97c7/e13a468607204ec3a29eb9ca4a289c55/FLAG962bbe0f1 [2019-11-28 00:02:53,597 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:02:53,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/count_by_1_variant.i [2019-11-28 00:02:53,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6921b97c7/e13a468607204ec3a29eb9ca4a289c55/FLAG962bbe0f1 [2019-11-28 00:02:54,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6921b97c7/e13a468607204ec3a29eb9ca4a289c55 [2019-11-28 00:02:54,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:02:54,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:02:54,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:02:54,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:02:54,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:02:54,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a34ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54, skipping insertion in model container [2019-11-28 00:02:54,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:02:54,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:02:54,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:02:54,228 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:02:54,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:02:54,257 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:02:54,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54 WrapperNode [2019-11-28 00:02:54,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:02:54,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:02:54,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:02:54,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:02:54,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:02:54,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:02:54,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:02:54,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:02:54,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (1/1) ... [2019-11-28 00:02:54,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:02:54,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:02:54,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:02:54,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:02:54,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (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 00:02:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:02:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:02:54,576 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:02:54,576 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 00:02:54,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:54 BoogieIcfgContainer [2019-11-28 00:02:54,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:02:54,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:02:54,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:02:54,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:02:54,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:02:54" (1/3) ... [2019-11-28 00:02:54,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685908f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:02:54, skipping insertion in model container [2019-11-28 00:02:54,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:54" (2/3) ... [2019-11-28 00:02:54,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685908f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:02:54, skipping insertion in model container [2019-11-28 00:02:54,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:54" (3/3) ... [2019-11-28 00:02:54,590 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2019-11-28 00:02:54,600 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:02:54,607 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:02:54,619 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:02:54,644 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:02:54,644 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:02:54,645 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:02:54,645 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:02:54,645 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:02:54,645 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:02:54,646 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:02:54,646 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:02:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-28 00:02:54,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 00:02:54,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:54,664 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 00:02:54,664 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:54,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:54,669 INFO L82 PathProgramCache]: Analyzing trace with hash 962347, now seen corresponding path program 1 times [2019-11-28 00:02:54,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:54,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198747393] [2019-11-28 00:02:54,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:54,826 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 00:02:54,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198747393] [2019-11-28 00:02:54,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:02:54,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:02:54,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319530330] [2019-11-28 00:02:54,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:02:54,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:54,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:02:54,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:02:54,859 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2019-11-28 00:02:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:54,943 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-28 00:02:54,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:02:54,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 00:02:54,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:54,955 INFO L225 Difference]: With dead ends: 26 [2019-11-28 00:02:54,955 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 00:02:54,959 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:02:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 00:02:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-28 00:02:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 00:02:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-28 00:02:54,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2019-11-28 00:02:54,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:54,996 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 00:02:54,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:02:54,996 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-28 00:02:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 00:02:54,997 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:54,997 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-28 00:02:54,997 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:54,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:54,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1390656418, now seen corresponding path program 1 times [2019-11-28 00:02:54,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:54,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239655267] [2019-11-28 00:02:54,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:55,138 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239655267] [2019-11-28 00:02:55,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392410035] [2019-11-28 00:02:55,139 INFO L94 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 [2019-11-28 00:02:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:55,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 00:02:55,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:02:55,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:02:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:55,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:02:55,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-28 00:02:55,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746257563] [2019-11-28 00:02:55,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:02:55,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:55,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:02:55,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:02:55,232 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-11-28 00:02:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:55,290 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-28 00:02:55,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:02:55,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-28 00:02:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:55,292 INFO L225 Difference]: With dead ends: 15 [2019-11-28 00:02:55,292 INFO L226 Difference]: Without dead ends: 13 [2019-11-28 00:02:55,293 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:02:55,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-28 00:02:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2019-11-28 00:02:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 00:02:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-28 00:02:55,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2019-11-28 00:02:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:55,299 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-28 00:02:55,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:02:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-28 00:02:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 00:02:55,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:55,301 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-11-28 00:02:55,504 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:55,505 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash 214023755, now seen corresponding path program 2 times [2019-11-28 00:02:55,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:55,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87075109] [2019-11-28 00:02:55,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:55,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87075109] [2019-11-28 00:02:55,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018868546] [2019-11-28 00:02:55,596 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:55,625 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:02:55,625 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:02:55,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 00:02:55,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:02:55,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:02:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:55,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:02:55,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-28 00:02:55,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605719700] [2019-11-28 00:02:55,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 00:02:55,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:55,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 00:02:55,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:02:55,648 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2019-11-28 00:02:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:55,729 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-28 00:02:55,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 00:02:55,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-28 00:02:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:55,731 INFO L225 Difference]: With dead ends: 18 [2019-11-28 00:02:55,731 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 00:02:55,732 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-28 00:02:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 00:02:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-28 00:02:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 00:02:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-28 00:02:55,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2019-11-28 00:02:55,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:55,739 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-28 00:02:55,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 00:02:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-28 00:02:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 00:02:55,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:55,740 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2019-11-28 00:02:55,943 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:55,945 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:55,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:55,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2039914178, now seen corresponding path program 3 times [2019-11-28 00:02:55,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:55,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080454836] [2019-11-28 00:02:55,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:56,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080454836] [2019-11-28 00:02:56,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686669021] [2019-11-28 00:02:56,039 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:56,072 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 00:02:56,072 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:02:56,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 00:02:56,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:02:56,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:02:56,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:02:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-28 00:02:56,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:02:56,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-28 00:02:56,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292950299] [2019-11-28 00:02:56,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 00:02:56,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:56,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 00:02:56,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-28 00:02:56,186 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2019-11-28 00:02:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:56,405 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-28 00:02:56,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 00:02:56,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-11-28 00:02:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:56,406 INFO L225 Difference]: With dead ends: 19 [2019-11-28 00:02:56,406 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:02:56,408 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2019-11-28 00:02:56,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:02:56,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:02:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:02:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:02:56,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-28 00:02:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:56,409 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:02:56,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 00:02:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:02:56,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:02:56,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:56,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:02:56,739 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:02:56,739 INFO L242 CegarLoopResult]: At program point L15(lines 10 16) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2019-11-28 00:02:56,739 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 00:02:56,740 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:02:56,740 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:02:56,740 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 00:02:56,740 INFO L242 CegarLoopResult]: At program point L12-2(lines 12 14) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~0 0) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 1000000))) [2019-11-28 00:02:56,740 INFO L246 CegarLoopResult]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2019-11-28 00:02:56,740 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 00:02:56,741 INFO L242 CegarLoopResult]: At program point L4-2(lines 1 16) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~i~0 1000000)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 1000000)) [2019-11-28 00:02:56,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:02:56 BoogieIcfgContainer [2019-11-28 00:02:56,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:02:56,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:02:56,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:02:56,765 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:02:56,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:54" (3/4) ... [2019-11-28 00:02:56,770 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:02:56,786 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 00:02:56,787 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:02:56,872 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:02:56,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:02:56,876 INFO L168 Benchmark]: Toolchain (without parser) took 2861.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 956.3 MB in the beginning and 993.7 MB in the end (delta: -37.4 MB). Peak memory consumption was 105.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:56,877 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:02:56,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.88 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:56,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -194.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:56,880 INFO L168 Benchmark]: Boogie Preprocessor took 17.97 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 00:02:56,882 INFO L168 Benchmark]: RCFGBuilder took 206.42 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:56,887 INFO L168 Benchmark]: TraceAbstraction took 2182.81 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: 120.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:56,889 INFO L168 Benchmark]: Witness Printer took 108.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 993.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:56,902 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.88 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 92.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -194.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.97 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 206.42 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2182.81 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: 120.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 11.5 GB. * Witness Printer took 108.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 993.7 MB 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: 5]: 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: 10]: Loop Invariant Derived loop invariant: i <= 1000000 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: i <= 0 || (1 == cond && i <= 1000000) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (!(i == 1000000) && 1 == cond) && i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 18 SDtfs, 49 SDslu, 29 SDs, 0 SdLazy, 57 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 25 HoareAnnotationTreeSize, 3 FomulaSimplifications, 434 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 1605 SizeOfPredicates, 11 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 14/48 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...