./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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-zilu/benchmark09_conjunctive.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 950600dbb36b2cdf644bab2e11db14741ba73676 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 03:57:26,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 03:57:26,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 03:57:26,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 03:57:26,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 03:57:26,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 03:57:26,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 03:57:26,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 03:57:26,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 03:57:26,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 03:57:26,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 03:57:26,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 03:57:26,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 03:57:26,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 03:57:26,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 03:57:26,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 03:57:26,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 03:57:26,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 03:57:26,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 03:57:26,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 03:57:26,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 03:57:26,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 03:57:26,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 03:57:26,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 03:57:26,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 03:57:26,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 03:57:26,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 03:57:26,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 03:57:26,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 03:57:26,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 03:57:26,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 03:57:26,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 03:57:26,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 03:57:26,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 03:57:26,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 03:57:26,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 03:57:26,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 03:57:26,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 03:57:26,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 03:57:26,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 03:57:26,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 03:57:26,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 03:57:26,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 03:57:26,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 03:57:26,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 03:57:26,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 03:57:26,799 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 03:57:26,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 03:57:26,799 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 03:57:26,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 03:57:26,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 03:57:26,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 03:57:26,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 03:57:26,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 03:57:26,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 03:57:26,801 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 03:57:26,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 03:57:26,801 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 03:57:26,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 03:57:26,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 03:57:26,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 03:57:26,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 03:57:26,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 03:57:26,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 03:57:26,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 03:57:26,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 03:57:26,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 03:57:26,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 03:57:26,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 03:57:26,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 03:57:26,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950600dbb36b2cdf644bab2e11db14741ba73676 [2021-07-05 03:57:27,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 03:57:27,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 03:57:27,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 03:57:27,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 03:57:27,112 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 03:57:27,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2021-07-05 03:57:27,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639e2d876/fb0758755b5c4747a0ef223d175772e7/FLAGc0ffe4aa3 [2021-07-05 03:57:27,500 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 03:57:27,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2021-07-05 03:57:27,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639e2d876/fb0758755b5c4747a0ef223d175772e7/FLAGc0ffe4aa3 [2021-07-05 03:57:27,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639e2d876/fb0758755b5c4747a0ef223d175772e7 [2021-07-05 03:57:27,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 03:57:27,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 03:57:27,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 03:57:27,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 03:57:27,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 03:57:27,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135383b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27, skipping insertion in model container [2021-07-05 03:57:27,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 03:57:27,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 03:57:27,646 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i[873,886] [2021-07-05 03:57:27,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 03:57:27,663 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 03:57:27,672 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i[873,886] [2021-07-05 03:57:27,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 03:57:27,710 INFO L208 MainTranslator]: Completed translation [2021-07-05 03:57:27,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27 WrapperNode [2021-07-05 03:57:27,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 03:57:27,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 03:57:27,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 03:57:27,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 03:57:27,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 03:57:27,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 03:57:27,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 03:57:27,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 03:57:27,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 03:57:27,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 03:57:27,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 03:57:27,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 03:57:27,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (1/1) ... [2021-07-05 03:57:27,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 03:57:27,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 03:57:27,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-05 03:57:27,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-05 03:57:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 03:57:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 03:57:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 03:57:27,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 03:57:28,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 03:57:28,036 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-05 03:57:28,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:57:28 BoogieIcfgContainer [2021-07-05 03:57:28,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 03:57:28,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 03:57:28,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 03:57:28,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 03:57:28,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 03:57:27" (1/3) ... [2021-07-05 03:57:28,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e088d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:57:28, skipping insertion in model container [2021-07-05 03:57:28,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:57:27" (2/3) ... [2021-07-05 03:57:28,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e088d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:57:28, skipping insertion in model container [2021-07-05 03:57:28,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:57:28" (3/3) ... [2021-07-05 03:57:28,056 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark09_conjunctive.i [2021-07-05 03:57:28,061 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 03:57:28,061 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 03:57:28,110 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 03:57:28,128 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 03:57:28,128 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 03:57:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 03:57:28,145 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:57:28,145 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-05 03:57:28,146 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:57:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:57:28,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1807243399, now seen corresponding path program 1 times [2021-07-05 03:57:28,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:57:28,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363356017] [2021-07-05 03:57:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:57:28,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:57:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:57:28,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:57:28,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:57:28,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363356017] [2021-07-05 03:57:28,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363356017] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 03:57:28,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 03:57:28,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 03:57:28,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687388148] [2021-07-05 03:57:28,266 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-05 03:57:28,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:57:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-05 03:57:28,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 03:57:28,279 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:57:28,286 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-07-05 03:57:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-05 03:57:28,287 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-07-05 03:57:28,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:57:28,291 INFO L225 Difference]: With dead ends: 21 [2021-07-05 03:57:28,291 INFO L226 Difference]: Without dead ends: 9 [2021-07-05 03:57:28,293 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 03:57:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-07-05 03:57:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-07-05 03:57:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-07-05 03:57:28,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2021-07-05 03:57:28,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:57:28,310 INFO L442 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-07-05 03:57:28,310 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-07-05 03:57:28,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 03:57:28,311 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:57:28,311 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-05 03:57:28,311 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 03:57:28,312 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:57:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:57:28,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1806975280, now seen corresponding path program 1 times [2021-07-05 03:57:28,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:57:28,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414315491] [2021-07-05 03:57:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:57:28,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:57:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:57:28,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,380 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-07-05 03:57:28,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 03:57:28,417 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-07-05 03:57:28,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 03:57:28,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 03:57:28,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:57:28,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:57:28,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414315491] [2021-07-05 03:57:28,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414315491] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 03:57:28,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 03:57:28,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-05 03:57:28,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320057305] [2021-07-05 03:57:28,445 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 03:57:28,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:57:28,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 03:57:28,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-05 03:57:28,448 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:57:28,488 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-07-05 03:57:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-05 03:57:28,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-07-05 03:57:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:57:28,490 INFO L225 Difference]: With dead ends: 14 [2021-07-05 03:57:28,490 INFO L226 Difference]: Without dead ends: 10 [2021-07-05 03:57:28,491 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-05 03:57:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-07-05 03:57:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-07-05 03:57:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-07-05 03:57:28,494 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2021-07-05 03:57:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:57:28,494 INFO L442 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-07-05 03:57:28,495 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-07-05 03:57:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-05 03:57:28,496 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:57:28,496 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 03:57:28,498 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 03:57:28,499 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:57:28,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:57:28,499 INFO L82 PathProgramCache]: Analyzing trace with hash 183324243, now seen corresponding path program 1 times [2021-07-05 03:57:28,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:57:28,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846800634] [2021-07-05 03:57:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:57:28,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:57:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:57:28,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,551 INFO L142 QuantifierPusher]: treesize reduction 10, result has 56.5 percent of original size [2021-07-05 03:57:28,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 03:57:28,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 03:57:28,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:57:28,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:57:28,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846800634] [2021-07-05 03:57:28,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846800634] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 03:57:28,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 03:57:28,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 03:57:28,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632510425] [2021-07-05 03:57:28,581 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 03:57:28,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:57:28,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 03:57:28,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 03:57:28,584 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:57:28,616 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-07-05 03:57:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 03:57:28,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-07-05 03:57:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:57:28,620 INFO L225 Difference]: With dead ends: 14 [2021-07-05 03:57:28,621 INFO L226 Difference]: Without dead ends: 10 [2021-07-05 03:57:28,621 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 03:57:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-07-05 03:57:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-07-05 03:57:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-07-05 03:57:28,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-07-05 03:57:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:57:28,623 INFO L442 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-07-05 03:57:28,624 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-07-05 03:57:28,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-05 03:57:28,624 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:57:28,624 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 03:57:28,624 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-05 03:57:28,625 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:57:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:57:28,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1389600693, now seen corresponding path program 1 times [2021-07-05 03:57:28,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:57:28,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856048300] [2021-07-05 03:57:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:57:28,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:57:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:57:28,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 03:57:28,655 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-07-05 03:57:28,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 03:57:28,665 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-07-05 03:57:28,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 03:57:28,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 03:57:28,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:57:28,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:57:28,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856048300] [2021-07-05 03:57:28,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856048300] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 03:57:28,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875148011] [2021-07-05 03:57:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:57:28,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 03:57:28,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 03:57:28,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-07-05 03:57:28,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-05 03:57:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:57:28,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-05 03:57:28,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 03:57:28,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:57:28,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-05 03:57:28,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 03:57:28,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:57:28,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-05 03:57:28,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 03:57:28,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-05 03:57:28,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-05 03:57:28,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-05 03:57:28,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-05 03:57:28,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-05 03:57:28,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:57:28,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 03:57:28,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-05 03:57:28,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 03:57:28,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 03:57:28,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-05 03:57:28,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:57:28,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-05 03:57:28,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-07-05 03:57:28,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:57:28,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,839 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-07-05 03:57:28,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:57:28,853 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:57:28,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:57:28,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:57:28,859 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-07-05 03:57:28,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:57:28,861 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:57:28,862 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-07-05 03:57:28,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:57:28,873 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-05 03:57:28,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:57:28,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:57:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:57:28,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875148011] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 03:57:28,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-05 03:57:28,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2021-07-05 03:57:28,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039864431] [2021-07-05 03:57:28,877 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-05 03:57:28,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:57:28,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-05 03:57:28,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-05 03:57:28,878 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:57:28,917 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-07-05 03:57:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 03:57:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-07-05 03:57:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:57:28,917 INFO L225 Difference]: With dead ends: 10 [2021-07-05 03:57:28,917 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 03:57:28,918 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 71.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-05 03:57:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 03:57:28,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 03:57:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 03:57:28,919 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-07-05 03:57:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:57:28,919 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 03:57:28,919 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:57:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 03:57:28,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 03:57:28,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 03:57:28,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:57:28,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:57:28,939 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 03:57:28,940 INFO L765 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: true [2021-07-05 03:57:28,940 INFO L758 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) [2021-07-05 03:57:28,940 INFO L762 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2021-07-05 03:57:28,940 INFO L762 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-07-05 03:57:28,940 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 03:57:28,940 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 03:57:28,941 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 03:57:28,941 INFO L762 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-07-05 03:57:28,941 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-07-05 03:57:28,941 INFO L762 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-07-05 03:57:28,941 INFO L762 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-07-05 03:57:28,941 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-07-05 03:57:28,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-05 03:57:29,160 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 03:57:29,160 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 03:57:29,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 03:57:29 BoogieIcfgContainer [2021-07-05 03:57:29,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 03:57:29,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 03:57:29,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 03:57:29,174 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 03:57:29,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:57:28" (3/4) ... [2021-07-05 03:57:29,177 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-05 03:57:29,183 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-07-05 03:57:29,184 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-05 03:57:29,184 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 03:57:29,184 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 03:57:29,205 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 03:57:29,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 03:57:29,206 INFO L168 Benchmark]: Toolchain (without parser) took 1686.86 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 46.3 MB in the beginning and 33.6 MB in the end (delta: 12.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2021-07-05 03:57:29,206 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 48.2 MB. Free memory was 29.5 MB in the beginning and 29.5 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 03:57:29,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.36 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 46.5 MB in the end (delta: -372.5 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-05 03:57:29,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.15 ms. Allocated memory is still 62.9 MB. Free memory was 46.5 MB in the beginning and 45.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 03:57:29,207 INFO L168 Benchmark]: Boogie Preprocessor took 26.78 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 44.2 MB in the end (delta: 955.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 03:57:29,207 INFO L168 Benchmark]: RCFGBuilder took 270.21 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 33.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-05 03:57:29,207 INFO L168 Benchmark]: TraceAbstraction took 1134.34 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.6 MB in the beginning and 36.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-07-05 03:57:29,208 INFO L168 Benchmark]: Witness Printer took 31.35 ms. Allocated memory is still 75.5 MB. Free memory was 36.2 MB in the beginning and 33.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 03:57:29,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 48.2 MB. Free memory was 29.5 MB in the beginning and 29.5 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 197.36 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 46.5 MB in the end (delta: -372.5 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.15 ms. Allocated memory is still 62.9 MB. Free memory was 46.5 MB in the beginning and 45.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.78 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 44.2 MB in the end (delta: 955.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 270.21 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 33.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1134.34 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.6 MB in the beginning and 36.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Witness Printer took 31.35 ms. Allocated memory is still 75.5 MB. Free memory was 36.2 MB in the beginning and 33.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1054.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 9.0ms, AutomataDifference: 151.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 17.5ms, InitialAbstractionConstructionTime: 9.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 17 SDslu, 17 SDs, 0 SdLazy, 34 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 171.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 11 HoareAnnotationTreeSize, 2 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 4.0ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 9.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 17.6ms SsaConstructionTime, 89.6ms SatisfiabilityAnalysisTime, 367.1ms InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 127 SizeOfPredicates, 3 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (y <= x && 0 <= x) && x <= y - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-07-05 03:57:29,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...