./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/string_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/loops/string_true-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e655d34f6b59f7cc9a55d4dc4dc525a41685abad .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:17:47,740 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:17:47,742 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:17:47,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:17:47,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:17:47,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:17:47,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:17:47,759 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:17:47,761 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:17:47,762 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:17:47,763 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:17:47,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:17:47,765 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:17:47,766 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:17:47,767 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:17:47,768 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:17:47,769 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:17:47,771 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:17:47,777 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:17:47,779 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:17:47,780 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:17:47,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:17:47,788 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:17:47,788 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:17:47,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:17:47,790 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:17:47,791 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:17:47,792 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:17:47,793 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:17:47,794 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:17:47,794 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:17:47,795 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:17:47,795 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:17:47,795 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:17:47,796 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:17:47,797 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:17:47,797 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:17:47,814 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:17:47,814 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:17:47,815 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:17:47,815 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:17:47,816 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:17:47,816 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:17:47,816 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:17:47,816 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:17:47,816 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:17:47,817 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:17:47,817 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:17:47,817 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:17:47,817 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:17:47,817 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:17:47,818 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:17:47,818 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:17:47,818 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:17:47,818 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:17:47,818 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:17:47,818 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:17:47,819 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:17:47,819 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:17:47,819 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:17:47,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:17:47,819 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:17:47,820 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:17:47,820 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:17:47,820 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:17:47,820 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:17:47,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:17:47,820 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> e655d34f6b59f7cc9a55d4dc4dc525a41685abad [2018-11-28 18:17:47,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:17:47,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:17:47,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:17:47,881 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:17:47,882 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:17:47,883 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/string_true-unreach-call_true-termination.i [2018-11-28 18:17:47,940 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7c576a6/fafc6c5a25e24a75bf4c2f2e37dedfdf/FLAGfa5ec4422 [2018-11-28 18:17:48,369 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:17:48,370 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/string_true-unreach-call_true-termination.i [2018-11-28 18:17:48,377 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7c576a6/fafc6c5a25e24a75bf4c2f2e37dedfdf/FLAGfa5ec4422 [2018-11-28 18:17:48,749 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7c576a6/fafc6c5a25e24a75bf4c2f2e37dedfdf [2018-11-28 18:17:48,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:17:48,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:17:48,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:17:48,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:17:48,767 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:17:48,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:17:48" (1/1) ... [2018-11-28 18:17:48,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f023978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:48, skipping insertion in model container [2018-11-28 18:17:48,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:17:48" (1/1) ... [2018-11-28 18:17:48,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:17:48,806 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:17:49,031 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:17:49,039 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:17:49,079 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:17:49,114 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:17:49,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49 WrapperNode [2018-11-28 18:17:49,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:17:49,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:17:49,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:17:49,116 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:17:49,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (1/1) ... [2018-11-28 18:17:49,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (1/1) ... [2018-11-28 18:17:49,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:17:49,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:17:49,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:17:49,151 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:17:49,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (1/1) ... [2018-11-28 18:17:49,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (1/1) ... [2018-11-28 18:17:49,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (1/1) ... [2018-11-28 18:17:49,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (1/1) ... [2018-11-28 18:17:49,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (1/1) ... [2018-11-28 18:17:49,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (1/1) ... [2018-11-28 18:17:49,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (1/1) ... [2018-11-28 18:17:49,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:17:49,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:17:49,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:17:49,218 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:17:49,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (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 [2018-11-28 18:17:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:17:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:17:49,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:17:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:17:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:17:49,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:17:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:17:49,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:17:49,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:17:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:17:49,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:17:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:17:49,907 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:17:49,908 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 18:17:49,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:49 BoogieIcfgContainer [2018-11-28 18:17:49,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:17:49,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:17:49,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:17:49,913 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:17:49,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:17:48" (1/3) ... [2018-11-28 18:17:49,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16de0b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:17:49, skipping insertion in model container [2018-11-28 18:17:49,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:49" (2/3) ... [2018-11-28 18:17:49,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16de0b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:17:49, skipping insertion in model container [2018-11-28 18:17:49,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:49" (3/3) ... [2018-11-28 18:17:49,917 INFO L112 eAbstractionObserver]: Analyzing ICFG string_true-unreach-call_true-termination.i [2018-11-28 18:17:49,927 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:17:49,936 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:17:49,955 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:17:49,988 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:17:49,989 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:17:49,989 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:17:49,989 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:17:49,990 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:17:49,990 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:17:49,990 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:17:49,990 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:17:49,990 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:17:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-11-28 18:17:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:17:50,019 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:50,020 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:50,022 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:50,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:50,029 INFO L82 PathProgramCache]: Analyzing trace with hash -99599224, now seen corresponding path program 1 times [2018-11-28 18:17:50,031 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:50,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:50,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:50,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:50,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:50,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:50,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:17:50,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:17:50,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:17:50,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:17:50,205 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-11-28 18:17:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:50,229 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2018-11-28 18:17:50,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:17:50,231 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 18:17:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:50,239 INFO L225 Difference]: With dead ends: 62 [2018-11-28 18:17:50,239 INFO L226 Difference]: Without dead ends: 28 [2018-11-28 18:17:50,242 INFO L631 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 [2018-11-28 18:17:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-28 18:17:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-28 18:17:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 18:17:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2018-11-28 18:17:50,280 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 22 [2018-11-28 18:17:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:50,281 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2018-11-28 18:17:50,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:17:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-11-28 18:17:50,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 18:17:50,282 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:50,283 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:50,283 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:50,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:50,283 INFO L82 PathProgramCache]: Analyzing trace with hash 930552028, now seen corresponding path program 1 times [2018-11-28 18:17:50,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:50,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:50,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:50,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:50,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:50,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:50,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:17:50,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:17:50,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:17:50,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:17:50,369 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2018-11-28 18:17:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:50,528 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2018-11-28 18:17:50,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:17:50,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-11-28 18:17:50,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:50,534 INFO L225 Difference]: With dead ends: 56 [2018-11-28 18:17:50,534 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 18:17:50,535 INFO L631 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 [2018-11-28 18:17:50,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 18:17:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2018-11-28 18:17:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 18:17:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2018-11-28 18:17:50,545 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 24 [2018-11-28 18:17:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:50,545 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2018-11-28 18:17:50,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:17:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2018-11-28 18:17:50,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 18:17:50,547 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:50,547 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:50,548 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:50,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1358146588, now seen corresponding path program 1 times [2018-11-28 18:17:50,548 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:50,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:50,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:50,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:50,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 18:17:50,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:17:50,642 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:17:50,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:50,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 18:17:50,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:17:50,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-28 18:17:50,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:17:50,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:17:50,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:17:50,800 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2018-11-28 18:17:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:50,927 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2018-11-28 18:17:50,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:17:50,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-11-28 18:17:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:50,929 INFO L225 Difference]: With dead ends: 65 [2018-11-28 18:17:50,929 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:17:50,931 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:17:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:17:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2018-11-28 18:17:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:17:50,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-28 18:17:50,938 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 28 [2018-11-28 18:17:50,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:50,939 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-28 18:17:50,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:17:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-28 18:17:50,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:17:50,941 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:50,941 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:50,942 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:50,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:50,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1752396196, now seen corresponding path program 2 times [2018-11-28 18:17:50,942 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:50,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:50,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:50,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:50,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:17:51,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:17:51,108 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:17:51,128 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:17:51,166 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 18:17:51,166 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:17:51,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-28 18:17:51,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:17:51,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-28 18:17:51,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 18:17:51,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 18:17:51,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:17:51,589 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 10 states. [2018-11-28 18:17:52,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:52,306 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2018-11-28 18:17:52,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:17:52,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-11-28 18:17:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:52,309 INFO L225 Difference]: With dead ends: 83 [2018-11-28 18:17:52,310 INFO L226 Difference]: Without dead ends: 54 [2018-11-28 18:17:52,310 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:17:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-28 18:17:52,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2018-11-28 18:17:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:17:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2018-11-28 18:17:52,319 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 32 [2018-11-28 18:17:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:52,319 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2018-11-28 18:17:52,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 18:17:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2018-11-28 18:17:52,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 18:17:52,320 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:52,321 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:52,321 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:52,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:52,321 INFO L82 PathProgramCache]: Analyzing trace with hash 515659703, now seen corresponding path program 1 times [2018-11-28 18:17:52,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:52,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:52,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:52,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:17:52,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-28 18:17:52,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:17:52,423 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:17:52,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:52,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:52,520 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-28 18:17:52,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:17:52,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 18:17:52,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:17:52,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:17:52,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:17:52,548 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 7 states. [2018-11-28 18:17:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:52,720 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2018-11-28 18:17:52,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 18:17:52,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-11-28 18:17:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:52,723 INFO L225 Difference]: With dead ends: 89 [2018-11-28 18:17:52,723 INFO L226 Difference]: Without dead ends: 62 [2018-11-28 18:17:52,726 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:17:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-28 18:17:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2018-11-28 18:17:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:17:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2018-11-28 18:17:52,736 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2018-11-28 18:17:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:52,736 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2018-11-28 18:17:52,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:17:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2018-11-28 18:17:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-28 18:17:52,738 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:52,738 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:52,738 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:52,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:52,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1489958921, now seen corresponding path program 2 times [2018-11-28 18:17:52,740 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:52,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:52,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:52,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:52,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:17:53,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:17:53,079 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:17:53,099 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:17:53,125 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 18:17:53,125 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:17:53,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-28 18:17:53,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:17:53,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2018-11-28 18:17:53,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 18:17:53,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 18:17:53,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:17:53,259 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 10 states. [2018-11-28 18:17:53,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:53,826 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2018-11-28 18:17:53,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:17:53,827 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-11-28 18:17:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:53,827 INFO L225 Difference]: With dead ends: 95 [2018-11-28 18:17:53,828 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:17:53,829 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-11-28 18:17:53,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:17:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:17:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:17:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:17:53,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-11-28 18:17:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:53,831 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:17:53,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 18:17:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:17:53,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:17:53,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:17:53,981 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:17:53,981 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:17:53,982 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:17:53,982 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:17:53,982 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:17:53,982 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:17:53,982 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:17:53,982 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 58) no Hoare annotation was computed. [2018-11-28 18:17:53,982 INFO L448 ceAbstractionStarter]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2018-11-28 18:17:53,983 INFO L444 ceAbstractionStarter]: At program point L23-3(lines 23 24) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-11-28 18:17:53,983 INFO L448 ceAbstractionStarter]: For program point L23-4(lines 23 24) no Hoare annotation was computed. [2018-11-28 18:17:53,983 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 20) no Hoare annotation was computed. [2018-11-28 18:17:53,983 INFO L444 ceAbstractionStarter]: At program point L19-3(lines 19 20) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-11-28 18:17:53,983 INFO L448 ceAbstractionStarter]: For program point L19-4(lines 19 20) no Hoare annotation was computed. [2018-11-28 18:17:53,984 INFO L448 ceAbstractionStarter]: For program point L32-1(lines 32 33) no Hoare annotation was computed. [2018-11-28 18:17:53,984 INFO L444 ceAbstractionStarter]: At program point L32-3(lines 32 33) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-11-28 18:17:53,984 INFO L448 ceAbstractionStarter]: For program point L32-4(lines 15 58) no Hoare annotation was computed. [2018-11-28 18:17:53,984 INFO L448 ceAbstractionStarter]: For program point L28-1(lines 28 29) no Hoare annotation was computed. [2018-11-28 18:17:53,984 INFO L444 ceAbstractionStarter]: At program point L28-3(lines 28 29) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-11-28 18:17:53,984 INFO L448 ceAbstractionStarter]: For program point L28-4(lines 28 29) no Hoare annotation was computed. [2018-11-28 18:17:53,984 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2018-11-28 18:17:53,985 INFO L444 ceAbstractionStarter]: At program point L41-2(lines 39 51) the Hoare annotation is: (or (= 0 main_~found~0) (and (<= 0 main_~j~0) (<= main_~nc_B~0 0) (= main_~i~0 0)) (= 1 main_~found~0)) [2018-11-28 18:17:53,985 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-28 18:17:53,985 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-28 18:17:53,985 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 58) no Hoare annotation was computed. [2018-11-28 18:17:53,985 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 58) the Hoare annotation is: true [2018-11-28 18:17:53,985 INFO L444 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-11-28 18:17:53,985 INFO L448 ceAbstractionStarter]: For program point L55-1(line 55) no Hoare annotation was computed. [2018-11-28 18:17:53,985 INFO L448 ceAbstractionStarter]: For program point L39-2(lines 39 51) no Hoare annotation was computed. [2018-11-28 18:17:53,986 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-11-28 18:17:53,986 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-11-28 18:17:53,986 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-28 18:17:53,986 INFO L448 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-11-28 18:17:53,986 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-28 18:17:53,986 INFO L448 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-11-28 18:17:54,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:17:54 BoogieIcfgContainer [2018-11-28 18:17:54,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:17:54,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:17:54,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:17:54,001 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:17:54,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:49" (3/4) ... [2018-11-28 18:17:54,005 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:17:54,012 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:17:54,013 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:17:54,013 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 18:17:54,018 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2018-11-28 18:17:54,019 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-11-28 18:17:54,019 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-28 18:17:54,019 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:17:54,092 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:17:54,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:17:54,094 INFO L168 Benchmark]: Toolchain (without parser) took 5338.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 951.4 MB in the beginning and 876.8 MB in the end (delta: 74.6 MB). Peak memory consumption was 186.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:54,096 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:54,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.38 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:54,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.03 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:54,097 INFO L168 Benchmark]: Boogie Preprocessor took 68.60 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:54,099 INFO L168 Benchmark]: RCFGBuilder took 690.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -143.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:54,099 INFO L168 Benchmark]: TraceAbstraction took 4090.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 883.6 MB in the end (delta: 195.3 MB). Peak memory consumption was 195.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:54,100 INFO L168 Benchmark]: Witness Printer took 92.41 ms. Allocated memory is still 1.1 GB. Free memory was 883.6 MB in the beginning and 876.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:54,107 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 357.38 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.03 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.60 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 690.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -143.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4090.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 883.6 MB in the end (delta: 195.3 MB). Peak memory consumption was 195.3 MB. Max. memory is 11.5 GB. * Witness Printer took 92.41 ms. Allocated memory is still 1.1 GB. Free memory was 883.6 MB in the beginning and 876.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 39]: Loop Invariant Derived loop invariant: (0 == found || ((0 <= j && nc_B <= 0) && i == 0)) || 1 == found - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 160 SDtfs, 125 SDslu, 392 SDs, 0 SdLazy, 304 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 23 PreInvPairs, 51 NumberOfFragments, 57 HoareAnnotationTreeSize, 23 FomulaSimplifications, 244 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 326 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 14058 SizeOfPredicates, 10 NumberOfNonLiveVariables, 389 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 88/128 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...