./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector-loops/diamond_2-1.c --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/bitvector-loops/diamond_2-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aeed2387a92d93d76a9218958b4bab5d23187f1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 22:34:52,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:34:52,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:34:52,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:34:52,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:34:52,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:34:52,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:34:52,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:34:52,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:34:52,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:34:52,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:34:52,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:34:52,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:34:52,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:34:52,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:34:52,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:34:52,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:34:52,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:34:52,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:34:52,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:34:52,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:34:52,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:34:52,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:34:52,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:34:52,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:34:52,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:34:52,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:34:52,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:34:52,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:34:52,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:34:52,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:34:52,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:34:52,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:34:52,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:34:52,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:34:52,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:34:52,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:34:52,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:34:52,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:34:52,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:34:52,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:34:52,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:34:52,798 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:34:52,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:34:52,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:34:52,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:34:52,800 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:34:52,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:34:52,801 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:34:52,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:34:52,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:34:52,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:34:52,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:34:52,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:34:52,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:34:52,804 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:34:52,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:34:52,805 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:34:52,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:34:52,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:34:52,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:34:52,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:34:52,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:34:52,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:34:52,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:34:52,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:34:52,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:34:52,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:34:52,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:34:52,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:34:52,808 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 -> 7aeed2387a92d93d76a9218958b4bab5d23187f1 [2019-11-27 22:34:53,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:34:53,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:34:53,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:34:53,105 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:34:53,105 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:34:53,106 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2019-11-27 22:34:53,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e80c56b/613df4f630f340a0b4d6e8a8fcd32641/FLAG33d9ceb9f [2019-11-27 22:34:53,602 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:34:53,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2019-11-27 22:34:53,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e80c56b/613df4f630f340a0b4d6e8a8fcd32641/FLAG33d9ceb9f [2019-11-27 22:34:53,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e80c56b/613df4f630f340a0b4d6e8a8fcd32641 [2019-11-27 22:34:54,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:34:54,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:34:54,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:34:54,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:34:54,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:34:54,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:34:53" (1/1) ... [2019-11-27 22:34:54,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600cef8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54, skipping insertion in model container [2019-11-27 22:34:54,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:34:53" (1/1) ... [2019-11-27 22:34:54,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:34:54,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:34:54,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:34:54,262 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:34:54,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:34:54,305 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:34:54,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54 WrapperNode [2019-11-27 22:34:54,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:34:54,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:34:54,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:34:54,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:34:54,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... [2019-11-27 22:34:54,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... [2019-11-27 22:34:54,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:34:54,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:34:54,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:34:54,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:34:54,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... [2019-11-27 22:34:54,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... [2019-11-27 22:34:54,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... [2019-11-27 22:34:54,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... [2019-11-27 22:34:54,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... [2019-11-27 22:34:54,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... [2019-11-27 22:34:54,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... [2019-11-27 22:34:54,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:34:54,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:34:54,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:34:54,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:34:54,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:34:54,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:34:54,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:34:54,783 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:34:54,783 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-27 22:34:54,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:34:54 BoogieIcfgContainer [2019-11-27 22:34:54,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:34:54,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:34:54,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:34:54,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:34:54,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:34:53" (1/3) ... [2019-11-27 22:34:54,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bb267f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:34:54, skipping insertion in model container [2019-11-27 22:34:54,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:34:54" (2/3) ... [2019-11-27 22:34:54,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bb267f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:34:54, skipping insertion in model container [2019-11-27 22:34:54,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:34:54" (3/3) ... [2019-11-27 22:34:54,805 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2019-11-27 22:34:54,816 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:34:54,825 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:34:54,838 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:34:54,862 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:34:54,862 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:34:54,862 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:34:54,862 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:34:54,862 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:34:54,863 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:34:54,863 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:34:54,863 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:34:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-27 22:34:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 22:34:54,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:34:54,880 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 22:34:54,880 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:34:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:34:54,885 INFO L82 PathProgramCache]: Analyzing trace with hash 31771204, now seen corresponding path program 1 times [2019-11-27 22:34:54,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:34:54,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482074068] [2019-11-27 22:34:54,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:34:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:34:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:34:54,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482074068] [2019-11-27 22:34:54,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:34:54,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:34:54,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914333693] [2019-11-27 22:34:54,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:34:54,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:34:55,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:34:55,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:34:55,005 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-27 22:34:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:34:55,019 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2019-11-27 22:34:55,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:34:55,020 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-27 22:34:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:34:55,028 INFO L225 Difference]: With dead ends: 26 [2019-11-27 22:34:55,028 INFO L226 Difference]: Without dead ends: 16 [2019-11-27 22:34:55,031 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 [2019-11-27 22:34:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-27 22:34:55,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-27 22:34:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-27 22:34:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 26 transitions. [2019-11-27 22:34:55,059 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 26 transitions. Word has length 5 [2019-11-27 22:34:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:34:55,060 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 26 transitions. [2019-11-27 22:34:55,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:34:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 26 transitions. [2019-11-27 22:34:55,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 22:34:55,060 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:34:55,061 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 22:34:55,061 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:34:55,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:34:55,061 INFO L82 PathProgramCache]: Analyzing trace with hash 29864580, now seen corresponding path program 1 times [2019-11-27 22:34:55,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:34:55,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496474450] [2019-11-27 22:34:55,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:34:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:34:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:34:55,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496474450] [2019-11-27 22:34:55,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:34:55,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:34:55,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629217955] [2019-11-27 22:34:55,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:34:55,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:34:55,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:34:55,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:34:55,192 INFO L87 Difference]: Start difference. First operand 16 states and 26 transitions. Second operand 3 states. [2019-11-27 22:34:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:34:55,271 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2019-11-27 22:34:55,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:34:55,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-27 22:34:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:34:55,274 INFO L225 Difference]: With dead ends: 22 [2019-11-27 22:34:55,275 INFO L226 Difference]: Without dead ends: 18 [2019-11-27 22:34:55,276 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:34:55,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-27 22:34:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-27 22:34:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-27 22:34:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2019-11-27 22:34:55,282 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 5 [2019-11-27 22:34:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:34:55,282 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2019-11-27 22:34:55,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:34:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2019-11-27 22:34:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 22:34:55,284 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:34:55,284 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:34:55,284 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:34:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:34:55,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1273519218, now seen corresponding path program 1 times [2019-11-27 22:34:55,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:34:55,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767988386] [2019-11-27 22:34:55,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:34:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:34:57,416 WARN L192 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 27 DAG size of output: 12 [2019-11-27 22:34:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:34:57,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767988386] [2019-11-27 22:34:57,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:34:57,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:34:57,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893706708] [2019-11-27 22:34:57,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:34:57,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:34:57,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:34:57,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:34:57,423 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand 3 states. [2019-11-27 22:34:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:34:57,562 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2019-11-27 22:34:57,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:34:57,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-27 22:34:57,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:34:57,563 INFO L225 Difference]: With dead ends: 47 [2019-11-27 22:34:57,564 INFO L226 Difference]: Without dead ends: 32 [2019-11-27 22:34:57,564 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:34:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-27 22:34:57,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2019-11-27 22:34:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-27 22:34:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2019-11-27 22:34:57,570 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 16 [2019-11-27 22:34:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:34:57,570 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2019-11-27 22:34:57,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:34:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2019-11-27 22:34:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 22:34:57,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:34:57,572 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:34:57,572 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:34:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:34:57,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1974583796, now seen corresponding path program 1 times [2019-11-27 22:34:57,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:34:57,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827240222] [2019-11-27 22:34:57,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:34:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:34:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:34:57,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827240222] [2019-11-27 22:34:57,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424636101] [2019-11-27 22:34:57,888 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 [2019-11-27 22:34:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:34:57,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-27 22:34:57,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 22:34:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:34:58,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 22:34:58,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-11-27 22:34:58,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206020667] [2019-11-27 22:34:58,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-27 22:34:58,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:34:58,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-27 22:34:58,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2019-11-27 22:34:58,026 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand 14 states. [2019-11-27 22:34:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:34:58,286 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2019-11-27 22:34:58,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-27 22:34:58,287 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2019-11-27 22:34:58,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:34:58,288 INFO L225 Difference]: With dead ends: 45 [2019-11-27 22:34:58,288 INFO L226 Difference]: Without dead ends: 41 [2019-11-27 22:34:58,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2019-11-27 22:34:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-27 22:34:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-11-27 22:34:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-27 22:34:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2019-11-27 22:34:58,296 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 16 [2019-11-27 22:34:58,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:34:58,297 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2019-11-27 22:34:58,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-27 22:34:58,297 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2019-11-27 22:34:58,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 22:34:58,298 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:34:58,298 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:34:58,503 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 22:34:58,503 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:34:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:34:58,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1309266250, now seen corresponding path program 1 times [2019-11-27 22:34:58,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:34:58,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365767074] [2019-11-27 22:34:58,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:34:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:34:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:34:58,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365767074] [2019-11-27 22:34:58,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:34:58,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 22:34:58,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051600649] [2019-11-27 22:34:58,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 22:34:58,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:34:58,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 22:34:58,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:34:58,596 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 3 states. [2019-11-27 22:34:58,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:34:58,664 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2019-11-27 22:34:58,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 22:34:58,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-27 22:34:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:34:58,666 INFO L225 Difference]: With dead ends: 58 [2019-11-27 22:34:58,666 INFO L226 Difference]: Without dead ends: 43 [2019-11-27 22:34:58,667 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 22:34:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-27 22:34:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-11-27 22:34:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-27 22:34:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2019-11-27 22:34:58,673 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 16 [2019-11-27 22:34:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:34:58,674 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2019-11-27 22:34:58,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 22:34:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2019-11-27 22:34:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 22:34:58,675 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:34:58,675 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:34:58,676 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:34:58,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:34:58,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1301479604, now seen corresponding path program 1 times [2019-11-27 22:34:58,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:34:58,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717138318] [2019-11-27 22:34:58,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:34:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:34:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:34:58,755 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:34:58,756 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:34:58,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:34:58 BoogieIcfgContainer [2019-11-27 22:34:58,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:34:58,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:34:58,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:34:58,776 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:34:58,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:34:54" (3/4) ... [2019-11-27 22:34:58,779 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:34:58,827 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:34:58,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:34:58,829 INFO L168 Benchmark]: Toolchain (without parser) took 4827.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 961.7 MB in the beginning and 981.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 127.8 MB. Max. memory is 11.5 GB. [2019-11-27 22:34:58,830 INFO L168 Benchmark]: CDTParser took 0.25 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. [2019-11-27 22:34:58,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.12 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:34:58,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-27 22:34:58,832 INFO L168 Benchmark]: Boogie Preprocessor took 28.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 22:34:58,833 INFO L168 Benchmark]: RCFGBuilder took 354.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-27 22:34:58,834 INFO L168 Benchmark]: TraceAbstraction took 3988.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.8 MB in the end (delta: 136.6 MB). Peak memory consumption was 136.6 MB. Max. memory is 11.5 GB. [2019-11-27 22:34:58,834 INFO L168 Benchmark]: Witness Printer took 52.19 ms. Allocated memory is still 1.2 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 22:34:58,838 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 303.12 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 354.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3988.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.8 MB in the end (delta: 136.6 MB). Peak memory consumption was 136.6 MB. Max. memory is 11.5 GB. * Witness Printer took 52.19 ms. Allocated memory is still 1.2 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned int y = __VERIFIER_nondet_uint(); [L15] COND TRUE x < 99 [L16] COND FALSE !(y % 2 == 0) [L17] x += 2 [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 [L22] COND FALSE !(y % 2 == 0) [L23] x += 2 [L25] COND FALSE !(y % 2 == 0) [L26] x -= 2 [L28] COND FALSE !(y % 2 == 0) [L29] x += 2 [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 [L34] COND FALSE !(y % 2 == 0) [L35] x += 4 [L37] COND FALSE !(y % 2 == 0) [L38] x += 2 [L40] COND FALSE !(y % 2 == 0) [L41] x -= 4 [L43] COND FALSE !(y % 2 == 0) [L44] x -= 4 [L15] COND FALSE !(x < 99) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 30 SDslu, 22 SDs, 0 SdLazy, 316 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, 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, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 5126 SizeOfPredicates, 1 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 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 incorrect! Received shutdown request...