./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/half.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/half.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 14367fbcb63815bbc35abe1c5a8e938762f99ead ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 00:03:06,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:03:06,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:03:06,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:03:06,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:03:06,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:03:06,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:03:06,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:03:06,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:03:06,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:03:06,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:03:06,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:03:06,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:03:06,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:03:06,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:03:06,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:03:06,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:03:06,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:03:06,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:03:06,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:03:06,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:03:06,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:03:06,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:03:06,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:03:06,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:03:06,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:03:06,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:03:06,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:03:06,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:03:06,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:03:06,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:03:06,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:03:06,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:03:06,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:03:06,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:03:06,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:03:06,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:03:06,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:03:06,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:03:06,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:03:06,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:03:06,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:03:06,747 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:03:06,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:03:06,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:03:06,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:03:06,750 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:03:06,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:03:06,750 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:03:06,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:03:06,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:03:06,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:03:06,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:03:06,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:03:06,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:03:06,752 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:03:06,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:03:06,753 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:03:06,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:03:06,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:03:06,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:03:06,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:03:06,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:03:06,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:03:06,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:03:06,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:03:06,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:03:06,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:03:06,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:03:06,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:03:06,756 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 -> 14367fbcb63815bbc35abe1c5a8e938762f99ead [2019-11-28 00:03:07,113 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:03:07,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:03:07,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:03:07,136 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:03:07,136 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:03:07,137 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/half.i [2019-11-28 00:03:07,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/421337a9c/7abfe40b81ff40bb86fe37e10ded1177/FLAGb85b40e6e [2019-11-28 00:03:07,596 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:03:07,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/half.i [2019-11-28 00:03:07,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/421337a9c/7abfe40b81ff40bb86fe37e10ded1177/FLAGb85b40e6e [2019-11-28 00:03:08,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/421337a9c/7abfe40b81ff40bb86fe37e10ded1177 [2019-11-28 00:03:08,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:03:08,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:03:08,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:03:08,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:03:08,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:03:08,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f061684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08, skipping insertion in model container [2019-11-28 00:03:08,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:03:08,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:03:08,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:03:08,261 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:03:08,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:03:08,299 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:03:08,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08 WrapperNode [2019-11-28 00:03:08,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:03:08,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:03:08,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:03:08,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:03:08,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:03:08,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:03:08,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:03:08,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:03:08,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (1/1) ... [2019-11-28 00:03:08,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:03:08,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:03:08,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:03:08,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:03:08,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (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 00:03:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:03:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:03:08,686 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:03:08,687 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 00:03:08,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:03:08 BoogieIcfgContainer [2019-11-28 00:03:08,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:03:08,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:03:08,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:03:08,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:03:08,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:03:08" (1/3) ... [2019-11-28 00:03:08,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcb3525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:03:08, skipping insertion in model container [2019-11-28 00:03:08,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:08" (2/3) ... [2019-11-28 00:03:08,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcb3525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:03:08, skipping insertion in model container [2019-11-28 00:03:08,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:03:08" (3/3) ... [2019-11-28 00:03:08,696 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2019-11-28 00:03:08,707 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:03:08,714 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:03:08,726 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:03:08,750 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:03:08,750 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:03:08,750 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:03:08,750 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:03:08,751 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:03:08,751 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:03:08,751 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:03:08,751 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:03:08,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 00:03:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 00:03:08,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:08,772 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 00:03:08,772 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:08,777 INFO L82 PathProgramCache]: Analyzing trace with hash 922384074, now seen corresponding path program 1 times [2019-11-28 00:03:08,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:08,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019766040] [2019-11-28 00:03:08,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:08,889 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 00:03:08,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019766040] [2019-11-28 00:03:08,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:03:08,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 00:03:08,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135891565] [2019-11-28 00:03:08,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 00:03:08,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:08,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 00:03:08,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:03:08,915 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-11-28 00:03:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:08,933 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-11-28 00:03:08,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 00:03:08,935 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-28 00:03:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:08,946 INFO L225 Difference]: With dead ends: 21 [2019-11-28 00:03:08,946 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 00:03:08,950 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:03:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 00:03:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 00:03:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 00:03:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-28 00:03:08,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-11-28 00:03:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:08,993 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-28 00:03:08,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 00:03:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-28 00:03:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 00:03:08,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:08,994 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 00:03:08,995 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:08,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:08,996 INFO L82 PathProgramCache]: Analyzing trace with hash 922056373, now seen corresponding path program 1 times [2019-11-28 00:03:08,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:08,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025825834] [2019-11-28 00:03:08,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:09,279 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2019-11-28 00:03:09,388 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 00:03:09,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025825834] [2019-11-28 00:03:09,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:03:09,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 00:03:09,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865621957] [2019-11-28 00:03:09,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:03:09,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:09,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:03:09,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:03:09,392 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2019-11-28 00:03:09,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:09,516 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-28 00:03:09,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:03:09,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-28 00:03:09,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:09,520 INFO L225 Difference]: With dead ends: 23 [2019-11-28 00:03:09,520 INFO L226 Difference]: Without dead ends: 19 [2019-11-28 00:03:09,521 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:03:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-28 00:03:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 10. [2019-11-28 00:03:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 00:03:09,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-28 00:03:09,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-28 00:03:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:09,528 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-28 00:03:09,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:03:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-28 00:03:09,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 00:03:09,529 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:09,530 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:03:09,530 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:09,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:09,531 INFO L82 PathProgramCache]: Analyzing trace with hash -90418981, now seen corresponding path program 1 times [2019-11-28 00:03:09,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:09,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833516877] [2019-11-28 00:03:09,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:09,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833516877] [2019-11-28 00:03:09,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958961310] [2019-11-28 00:03:09,740 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 00:03:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:09,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 00:03:09,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:03:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:09,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:03:09,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-11-28 00:03:09,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450622287] [2019-11-28 00:03:09,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 00:03:09,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:09,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 00:03:09,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-28 00:03:09,921 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 13 states. [2019-11-28 00:03:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:10,102 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-11-28 00:03:10,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:03:10,103 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2019-11-28 00:03:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:10,104 INFO L225 Difference]: With dead ends: 23 [2019-11-28 00:03:10,104 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 00:03:10,105 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-11-28 00:03:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 00:03:10,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2019-11-28 00:03:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 00:03:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-28 00:03:10,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2019-11-28 00:03:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:10,115 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-28 00:03:10,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 00:03:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-28 00:03:10,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 00:03:10,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:10,118 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 00:03:10,319 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:10,319 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:10,321 INFO L82 PathProgramCache]: Analyzing trace with hash 811629813, now seen corresponding path program 2 times [2019-11-28 00:03:10,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:10,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994812862] [2019-11-28 00:03:10,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:10,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994812862] [2019-11-28 00:03:10,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222492320] [2019-11-28 00:03:10,439 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 00:03:10,474 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:03:10,475 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:03:10,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 00:03:10,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:03:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:10,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:03:10,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-28 00:03:10,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674769289] [2019-11-28 00:03:10,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:03:10,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:10,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:03:10,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:03:10,508 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2019-11-28 00:03:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:10,533 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-28 00:03:10,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:03:10,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 00:03:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:10,535 INFO L225 Difference]: With dead ends: 22 [2019-11-28 00:03:10,535 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 00:03:10,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:03:10,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 00:03:10,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-28 00:03:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 00:03:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-28 00:03:10,540 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2019-11-28 00:03:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:10,541 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-28 00:03:10,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:03:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-28 00:03:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 00:03:10,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:10,542 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:03:10,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:10,745 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:10,746 INFO L82 PathProgramCache]: Analyzing trace with hash 868888115, now seen corresponding path program 1 times [2019-11-28 00:03:10,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:10,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796957375] [2019-11-28 00:03:10,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:11,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796957375] [2019-11-28 00:03:11,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589938550] [2019-11-28 00:03:11,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2019-11-28 00:03:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:11,050 WARN L253 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 00:03:11,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:11,233 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:03:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:11,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:03:11,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-28 00:03:11,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828081405] [2019-11-28 00:03:11,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 00:03:11,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:11,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 00:03:11,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-11-28 00:03:11,264 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 17 states. [2019-11-28 00:03:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:11,653 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-11-28 00:03:11,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-28 00:03:11,658 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 12 [2019-11-28 00:03:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:11,659 INFO L225 Difference]: With dead ends: 38 [2019-11-28 00:03:11,659 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 00:03:11,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2019-11-28 00:03:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 00:03:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-28 00:03:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 00:03:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-28 00:03:11,666 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-28 00:03:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:11,667 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-28 00:03:11,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 00:03:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-28 00:03:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 00:03:11,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:11,668 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:03:11,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:11,877 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:11,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:11,878 INFO L82 PathProgramCache]: Analyzing trace with hash 816939165, now seen corresponding path program 2 times [2019-11-28 00:03:11,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:11,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739264270] [2019-11-28 00:03:11,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 00:03:12,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739264270] [2019-11-28 00:03:12,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224838510] [2019-11-28 00:03:12,096 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:12,120 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:03:12,120 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:03:12,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 00:03:12,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:03:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:12,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:03:12,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-11-28 00:03:12,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867064626] [2019-11-28 00:03:12,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-28 00:03:12,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:12,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-28 00:03:12,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-11-28 00:03:12,296 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 18 states. [2019-11-28 00:03:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:12,674 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-11-28 00:03:12,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 00:03:12,675 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2019-11-28 00:03:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:12,676 INFO L225 Difference]: With dead ends: 36 [2019-11-28 00:03:12,676 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 00:03:12,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2019-11-28 00:03:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 00:03:12,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-28 00:03:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 00:03:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-28 00:03:12,682 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 15 [2019-11-28 00:03:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:12,682 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-28 00:03:12,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-28 00:03:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-28 00:03:12,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 00:03:12,683 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:03:12,684 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-28 00:03:12,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:12,885 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:03:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:03:12,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1279408559, now seen corresponding path program 3 times [2019-11-28 00:03:12,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:03:12,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166921614] [2019-11-28 00:03:12,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:03:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:03:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-28 00:03:13,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166921614] [2019-11-28 00:03:13,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706240646] [2019-11-28 00:03:13,206 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:13,248 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-11-28 00:03:13,248 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:03:13,250 WARN L253 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-28 00:03:13,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:03:13,605 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:03:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:03:13,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:03:13,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16] total 25 [2019-11-28 00:03:13,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039270548] [2019-11-28 00:03:13,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-28 00:03:13,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:03:13,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-28 00:03:13,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2019-11-28 00:03:13,631 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 26 states. [2019-11-28 00:03:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:03:14,126 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-11-28 00:03:14,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-28 00:03:14,126 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 24 [2019-11-28 00:03:14,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:03:14,126 INFO L225 Difference]: With dead ends: 34 [2019-11-28 00:03:14,126 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:03:14,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2019-11-28 00:03:14,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:03:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:03:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:03:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:03:14,128 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-11-28 00:03:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:03:14,128 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:03:14,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-28 00:03:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:03:14,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:03:14,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:03:14,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:03:14,425 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:03:14,426 INFO L249 CegarLoopResult]: At program point L21(lines 10 22) the Hoare annotation is: true [2019-11-28 00:03:14,426 INFO L246 CegarLoopResult]: For program point L15-2(lines 15 19) no Hoare annotation was computed. [2019-11-28 00:03:14,426 INFO L242 CegarLoopResult]: At program point L15-3(lines 15 19) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and (<= .cse0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 .cse0) .cse1) (and (<= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~i~0 0)) (let ((.cse2 (+ ULTIMATE.start_main_~i~0 1))) (and (<= .cse0 .cse2) (<= .cse2 .cse0) .cse1)))) [2019-11-28 00:03:14,426 INFO L246 CegarLoopResult]: For program point L15-4(lines 15 19) no Hoare annotation was computed. [2019-11-28 00:03:14,427 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 00:03:14,427 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:03:14,427 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:03:14,427 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 00:03:14,427 INFO L246 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-11-28 00:03:14,428 INFO L246 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-28 00:03:14,428 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 00:03:14,428 INFO L249 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-28 00:03:14,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:03:14 BoogieIcfgContainer [2019-11-28 00:03:14,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:03:14,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:03:14,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:03:14,445 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:03:14,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:03:08" (3/4) ... [2019-11-28 00:03:14,448 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:03:14,458 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 00:03:14,458 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:03:14,498 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:03:14,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:03:14,500 INFO L168 Benchmark]: Toolchain (without parser) took 6469.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.3 MB). Free memory was 961.7 MB in the beginning and 984.5 MB in the end (delta: -22.8 MB). Peak memory consumption was 188.5 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:14,501 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:03:14,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.63 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:14,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -198.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:14,503 INFO L168 Benchmark]: Boogie Preprocessor took 21.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:14,503 INFO L168 Benchmark]: RCFGBuilder took 262.65 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:14,504 INFO L168 Benchmark]: TraceAbstraction took 5754.55 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 991.9 MB in the end (delta: 138.2 MB). Peak memory consumption was 198.5 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:14,505 INFO L168 Benchmark]: Witness Printer took 54.14 ms. Allocated memory is still 1.2 GB. Free memory was 991.9 MB in the beginning and 984.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:03:14,509 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.63 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 101.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -198.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 262.65 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5754.55 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 991.9 MB in the end (delta: 138.2 MB). Peak memory consumption was 198.5 MB. Max. memory is 11.5 GB. * Witness Printer took 54.14 ms. Allocated memory is still 1.2 GB. Free memory was 991.9 MB in the beginning and 984.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 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: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((2 * n <= i && i <= 2 * n) && n <= k) || ((n <= 0 && 0 <= n) && i == 0)) || ((2 * n <= i + 1 && i + 1 <= 2 * n) && n <= k) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 5.5s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 101 SDslu, 87 SDs, 0 SdLazy, 757 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 41 SyntacticMatches, 9 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=6, 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, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 147 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 22794 SizeOfPredicates, 17 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 17/148 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...