./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/simple_4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f6fb2bb1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/simple_4-2.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 f4456e2c68ec8b38c6ee81a801d6ec2920f9b858 .................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-f6fb2bb [2019-11-19 18:51:22,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 18:51:22,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 18:51:22,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 18:51:22,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 18:51:22,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 18:51:22,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 18:51:22,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 18:51:22,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 18:51:22,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 18:51:22,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 18:51:22,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 18:51:22,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 18:51:22,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 18:51:22,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 18:51:22,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 18:51:22,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 18:51:22,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 18:51:22,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 18:51:22,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 18:51:22,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 18:51:22,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 18:51:22,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 18:51:22,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 18:51:22,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 18:51:22,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 18:51:22,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 18:51:22,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 18:51:22,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 18:51:22,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 18:51:22,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 18:51:22,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 18:51:22,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 18:51:22,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 18:51:22,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 18:51:22,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 18:51:22,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 18:51:22,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 18:51:22,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 18:51:22,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 18:51:22,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 18:51:22,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 18:51:22,836 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 18:51:22,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 18:51:22,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 18:51:22,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 18:51:22,842 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 18:51:22,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 18:51:22,843 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 18:51:22,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 18:51:22,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 18:51:22,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 18:51:22,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 18:51:22,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 18:51:22,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 18:51:22,844 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 18:51:22,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 18:51:22,846 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 18:51:22,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 18:51:22,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 18:51:22,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 18:51:22,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 18:51:22,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 18:51:22,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 18:51:22,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 18:51:22,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 18:51:22,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 18:51:22,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 18:51:22,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 18:51:22,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 18:51:22,850 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 -> f4456e2c68ec8b38c6ee81a801d6ec2920f9b858 [2019-11-19 18:51:23,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 18:51:23,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 18:51:23,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 18:51:23,221 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 18:51:23,222 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 18:51:23,224 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/simple_4-2.c [2019-11-19 18:51:23,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7d4d2ac/95ab1793584b41b7a4492c33e8880c7f/FLAG46c3a3276 [2019-11-19 18:51:23,660 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 18:51:23,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_4-2.c [2019-11-19 18:51:23,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7d4d2ac/95ab1793584b41b7a4492c33e8880c7f/FLAG46c3a3276 [2019-11-19 18:51:24,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7d4d2ac/95ab1793584b41b7a4492c33e8880c7f [2019-11-19 18:51:24,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 18:51:24,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 18:51:24,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 18:51:24,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 18:51:24,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 18:51:24,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104f4d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24, skipping insertion in model container [2019-11-19 18:51:24,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,114 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 18:51:24,133 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 18:51:24,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 18:51:24,329 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 18:51:24,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 18:51:24,365 INFO L192 MainTranslator]: Completed translation [2019-11-19 18:51:24,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24 WrapperNode [2019-11-19 18:51:24,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 18:51:24,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 18:51:24,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 18:51:24,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 18:51:24,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 18:51:24,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 18:51:24,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 18:51:24,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 18:51:24,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (1/1) ... [2019-11-19 18:51:24,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 18:51:24,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 18:51:24,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 18:51:24,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 18:51:24,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (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 [2019-11-19 18:51:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 18:51:24,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 18:51:24,683 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 18:51:24,683 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 18:51:24,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:24 BoogieIcfgContainer [2019-11-19 18:51:24,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 18:51:24,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 18:51:24,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 18:51:24,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 18:51:24,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:51:24" (1/3) ... [2019-11-19 18:51:24,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456b81d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:24, skipping insertion in model container [2019-11-19 18:51:24,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:24" (2/3) ... [2019-11-19 18:51:24,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456b81d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:24, skipping insertion in model container [2019-11-19 18:51:24,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:24" (3/3) ... [2019-11-19 18:51:24,691 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_4-2.c [2019-11-19 18:51:24,700 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 18:51:24,706 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 18:51:24,717 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 18:51:24,741 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 18:51:24,741 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 18:51:24,741 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 18:51:24,741 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 18:51:24,742 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 18:51:24,742 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 18:51:24,742 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 18:51:24,742 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 18:51:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-19 18:51:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-19 18:51:24,758 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:51:24,759 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-19 18:51:24,759 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:51:24,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:51:24,764 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-11-19 18:51:24,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:51:24,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237177663] [2019-11-19 18:51:24,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:51:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:51:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:51:24,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237177663] [2019-11-19 18:51:24,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:51:24,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 18:51:24,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132854149] [2019-11-19 18:51:24,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 18:51:24,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:51:25,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 18:51:25,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 18:51:25,018 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-19 18:51:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:51:25,056 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-11-19 18:51:25,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 18:51:25,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-19 18:51:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:51:25,069 INFO L225 Difference]: With dead ends: 17 [2019-11-19 18:51:25,069 INFO L226 Difference]: Without dead ends: 7 [2019-11-19 18:51:25,072 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 [2019-11-19 18:51:25,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-19 18:51:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-19 18:51:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-19 18:51:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-19 18:51:25,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-19 18:51:25,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:51:25,101 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-19 18:51:25,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 18:51:25,102 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-19 18:51:25,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 18:51:25,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:51:25,102 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-19 18:51:25,103 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:51:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:51:25,103 INFO L82 PathProgramCache]: Analyzing trace with hash 925620370, now seen corresponding path program 1 times [2019-11-19 18:51:25,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:51:25,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715934085] [2019-11-19 18:51:25,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:51:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:51:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:51:25,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715934085] [2019-11-19 18:51:25,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472063400] [2019-11-19 18:51:25,216 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 [2019-11-19 18:51:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:51:25,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 18:51:25,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 18:51:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:51:25,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 18:51:25,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2019-11-19 18:51:25,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922413171] [2019-11-19 18:51:25,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 18:51:25,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:51:25,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 18:51:25,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 18:51:25,310 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-11-19 18:51:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:51:25,326 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-19 18:51:25,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 18:51:25,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-19 18:51:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:51:25,328 INFO L225 Difference]: With dead ends: 12 [2019-11-19 18:51:25,328 INFO L226 Difference]: Without dead ends: 8 [2019-11-19 18:51:25,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 18:51:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-19 18:51:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-19 18:51:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-19 18:51:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-19 18:51:25,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-19 18:51:25,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:51:25,332 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-19 18:51:25,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 18:51:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-19 18:51:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 18:51:25,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:51:25,333 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-19 18:51:25,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 18:51:25,537 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:51:25,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:51:25,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1368874232, now seen corresponding path program 2 times [2019-11-19 18:51:25,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:51:25,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965404663] [2019-11-19 18:51:25,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:51:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:51:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:51:25,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965404663] [2019-11-19 18:51:25,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081837524] [2019-11-19 18:51:25,662 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 18:51:25,689 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-19 18:51:25,690 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 18:51:25,691 WARN L253 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 18:51:25,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 18:51:25,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 18:51:25,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 18:51:25,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 18:51:25,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 18:51:25,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 18:51:25,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 18:51:25,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 18:51:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-19 18:51:25,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-19 18:51:25,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2019-11-19 18:51:25,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568589455] [2019-11-19 18:51:25,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 18:51:25,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:51:25,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 18:51:25,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-19 18:51:25,765 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-11-19 18:51:27,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:51:27,773 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-11-19 18:51:27,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 18:51:27,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-19 18:51:27,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:51:27,781 INFO L225 Difference]: With dead ends: 8 [2019-11-19 18:51:27,781 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 18:51:27,782 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-19 18:51:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 18:51:27,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 18:51:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 18:51:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 18:51:27,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-19 18:51:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:51:27,783 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 18:51:27,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 18:51:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 18:51:27,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 18:51:27,984 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 18:51:27,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 18:51:28,000 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 18:51:28,001 INFO L447 ceAbstractionStarter]: At program point L13-2(lines 13 15) the Hoare annotation is: true [2019-11-19 18:51:28,001 INFO L444 ceAbstractionStarter]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2019-11-19 18:51:28,001 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-19 18:51:28,001 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 18:51:28,001 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 18:51:28,002 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-19 18:51:28,002 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-19 18:51:28,002 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 1 18) the Hoare annotation is: true [2019-11-19 18:51:28,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:51:28 BoogieIcfgContainer [2019-11-19 18:51:28,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 18:51:28,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 18:51:28,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 18:51:28,010 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 18:51:28,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:24" (3/4) ... [2019-11-19 18:51:28,013 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 18:51:28,024 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-19 18:51:28,024 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 18:51:28,062 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 18:51:28,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 18:51:28,065 INFO L168 Benchmark]: Toolchain (without parser) took 3970.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -98.3 MB). Peak memory consumption was 50.1 MB. Max. memory is 11.5 GB. [2019-11-19 18:51:28,066 INFO L168 Benchmark]: CDTParser took 0.29 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. [2019-11-19 18:51:28,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.81 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. [2019-11-19 18:51:28,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -194.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-19 18:51:28,068 INFO L168 Benchmark]: Boogie Preprocessor took 23.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 18:51:28,069 INFO L168 Benchmark]: RCFGBuilder took 200.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2019-11-19 18:51:28,070 INFO L168 Benchmark]: TraceAbstraction took 3323.98 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: 66.5 MB). Peak memory consumption was 66.5 MB. Max. memory is 11.5 GB. [2019-11-19 18:51:28,070 INFO L168 Benchmark]: Witness Printer took 53.36 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. [2019-11-19 18:51:28,074 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 267.81 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 92.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -194.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 200.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3323.98 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: 66.5 MB). Peak memory consumption was 66.5 MB. Max. memory is 11.5 GB. * Witness Printer took 53.36 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 31 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 4 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...