./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/string-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/string-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer --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-cad4683 [2019-11-15 19:49:37,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 19:49:37,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 19:49:37,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 19:49:37,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 19:49:37,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 19:49:37,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 19:49:37,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 19:49:37,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 19:49:37,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 19:49:37,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 19:49:37,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 19:49:37,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 19:49:37,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 19:49:37,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 19:49:37,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 19:49:37,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 19:49:37,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 19:49:37,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 19:49:37,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 19:49:37,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 19:49:37,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 19:49:37,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 19:49:37,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 19:49:37,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 19:49:37,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 19:49:37,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 19:49:37,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 19:49:37,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 19:49:37,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 19:49:37,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 19:49:37,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 19:49:37,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 19:49:37,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 19:49:37,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 19:49:37,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 19:49:37,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 19:49:37,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 19:49:37,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 19:49:37,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 19:49:37,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 19:49:37,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 19:49:37,842 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 19:49:37,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 19:49:37,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 19:49:37,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 19:49:37,855 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 19:49:37,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 19:49:37,856 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 19:49:37,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 19:49:37,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 19:49:37,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 19:49:37,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 19:49:37,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 19:49:37,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 19:49:37,857 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 19:49:37,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 19:49:37,858 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 19:49:37,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 19:49:37,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 19:49:37,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 19:49:37,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 19:49:37,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 19:49:37,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 19:49:37,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 19:49:37,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 19:49:37,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 19:49:37,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 19:49:37,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 19:49:37,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 19:49:37,863 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer 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 [2019-11-15 19:49:37,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 19:49:37,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 19:49:37,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 19:49:37,911 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 19:49:37,911 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 19:49:37,912 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/../../sv-benchmarks/c/loops/string-1.i [2019-11-15 19:49:37,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/data/c6d7879f3/54d6c80b004a4741a0b8e980d1ec3b3b/FLAG7e82602ef [2019-11-15 19:49:38,349 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 19:49:38,349 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/sv-benchmarks/c/loops/string-1.i [2019-11-15 19:49:38,356 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/data/c6d7879f3/54d6c80b004a4741a0b8e980d1ec3b3b/FLAG7e82602ef [2019-11-15 19:49:38,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/data/c6d7879f3/54d6c80b004a4741a0b8e980d1ec3b3b [2019-11-15 19:49:38,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 19:49:38,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 19:49:38,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 19:49:38,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 19:49:38,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 19:49:38,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:49:38" (1/1) ... [2019-11-15 19:49:38,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e0890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:38, skipping insertion in model container [2019-11-15 19:49:38,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:49:38" (1/1) ... [2019-11-15 19:49:38,722 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 19:49:38,741 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 19:49:38,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:49:38,997 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 19:49:39,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:49:39,050 INFO L192 MainTranslator]: Completed translation [2019-11-15 19:49:39,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39 WrapperNode [2019-11-15 19:49:39,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 19:49:39,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 19:49:39,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 19:49:39,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 19:49:39,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... [2019-11-15 19:49:39,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... [2019-11-15 19:49:39,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 19:49:39,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 19:49:39,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 19:49:39,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 19:49:39,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... [2019-11-15 19:49:39,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... [2019-11-15 19:49:39,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... [2019-11-15 19:49:39,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... [2019-11-15 19:49:39,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... [2019-11-15 19:49:39,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... [2019-11-15 19:49:39,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... [2019-11-15 19:49:39,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 19:49:39,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 19:49:39,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 19:49:39,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 19:49:39,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/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 [2019-11-15 19:49:39,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 19:49:39,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 19:49:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 19:49:39,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 19:49:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 19:49:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 19:49:39,587 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 19:49:39,587 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-15 19:49:39,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:49:39 BoogieIcfgContainer [2019-11-15 19:49:39,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 19:49:39,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 19:49:39,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 19:49:39,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 19:49:39,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 07:49:38" (1/3) ... [2019-11-15 19:49:39,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bebea84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 07:49:39, skipping insertion in model container [2019-11-15 19:49:39,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:49:39" (2/3) ... [2019-11-15 19:49:39,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bebea84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 07:49:39, skipping insertion in model container [2019-11-15 19:49:39,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:49:39" (3/3) ... [2019-11-15 19:49:39,598 INFO L109 eAbstractionObserver]: Analyzing ICFG string-1.i [2019-11-15 19:49:39,607 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 19:49:39,615 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 19:49:39,626 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 19:49:39,651 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 19:49:39,652 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 19:49:39,652 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 19:49:39,652 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 19:49:39,652 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 19:49:39,653 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 19:49:39,653 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 19:49:39,653 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 19:49:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-15 19:49:39,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 19:49:39,711 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:49:39,713 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:49:39,715 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 19:49:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:49:39,730 INFO L82 PathProgramCache]: Analyzing trace with hash 374782792, now seen corresponding path program 1 times [2019-11-15 19:49:39,742 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:49:39,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808794725] [2019-11-15 19:49:39,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:49:39,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:49:39,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:49:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:49:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:49:39,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808794725] [2019-11-15 19:49:39,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:49:39,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 19:49:39,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079880620] [2019-11-15 19:49:39,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 19:49:39,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:49:39,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 19:49:39,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 19:49:39,956 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-15 19:49:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:49:39,984 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2019-11-15 19:49:39,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 19:49:39,986 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-15 19:49:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:49:39,999 INFO L225 Difference]: With dead ends: 48 [2019-11-15 19:49:40,000 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 19:49:40,004 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 19:49:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 19:49:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-15 19:49:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 19:49:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-15 19:49:40,050 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2019-11-15 19:49:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:49:40,051 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-15 19:49:40,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 19:49:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-11-15 19:49:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 19:49:40,053 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:49:40,053 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:49:40,054 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 19:49:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:49:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1602331574, now seen corresponding path program 1 times [2019-11-15 19:49:40,055 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:49:40,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007752689] [2019-11-15 19:49:40,055 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:49:40,055 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:49:40,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:49:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:49:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:49:40,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007752689] [2019-11-15 19:49:40,120 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:49:40,120 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 19:49:40,120 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956620276] [2019-11-15 19:49:40,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 19:49:40,122 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:49:40,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 19:49:40,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 19:49:40,123 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 3 states. [2019-11-15 19:49:40,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:49:40,186 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2019-11-15 19:49:40,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 19:49:40,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-15 19:49:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:49:40,190 INFO L225 Difference]: With dead ends: 50 [2019-11-15 19:49:40,190 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 19:49:40,192 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 19:49:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 19:49:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2019-11-15 19:49:40,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-15 19:49:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-11-15 19:49:40,199 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 18 [2019-11-15 19:49:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:49:40,199 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-11-15 19:49:40,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 19:49:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-11-15 19:49:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 19:49:40,201 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:49:40,201 INFO L380 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] [2019-11-15 19:49:40,201 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 19:49:40,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:49:40,202 INFO L82 PathProgramCache]: Analyzing trace with hash 177830358, now seen corresponding path program 1 times [2019-11-15 19:49:40,202 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:49:40,202 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504129803] [2019-11-15 19:49:40,202 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:49:40,202 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:49:40,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:49:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:49:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 19:49:40,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504129803] [2019-11-15 19:49:40,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334669263] [2019-11-15 19:49:40,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/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 [2019-11-15 19:49:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:49:40,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 19:49:40,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:49:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 19:49:40,397 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:49:40,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-15 19:49:40,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394875296] [2019-11-15 19:49:40,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 19:49:40,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:49:40,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 19:49:40,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 19:49:40,399 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 5 states. [2019-11-15 19:49:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:49:40,495 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2019-11-15 19:49:40,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 19:49:40,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-15 19:49:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:49:40,500 INFO L225 Difference]: With dead ends: 61 [2019-11-15 19:49:40,500 INFO L226 Difference]: Without dead ends: 42 [2019-11-15 19:49:40,500 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 19:49:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-15 19:49:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2019-11-15 19:49:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 19:49:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-15 19:49:40,506 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 22 [2019-11-15 19:49:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:49:40,507 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-15 19:49:40,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 19:49:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-15 19:49:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-15 19:49:40,508 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:49:40,508 INFO L380 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] [2019-11-15 19:49:40,709 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:49:40,711 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 19:49:40,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:49:40,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1590720246, now seen corresponding path program 2 times [2019-11-15 19:49:40,712 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:49:40,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537697759] [2019-11-15 19:49:40,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:49:40,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:49:40,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:49:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:49:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 19:49:40,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537697759] [2019-11-15 19:49:40,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263515422] [2019-11-15 19:49:40,831 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/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 [2019-11-15 19:49:40,881 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 19:49:40,881 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:49:40,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 19:49:40,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:49:40,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 19:49:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-15 19:49:40,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 19:49:40,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-11-15 19:49:40,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850065096] [2019-11-15 19:49:40,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 19:49:40,950 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:49:40,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 19:49:40,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-15 19:49:40,951 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 5 states. [2019-11-15 19:49:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:49:41,016 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-11-15 19:49:41,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 19:49:41,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-15 19:49:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:49:41,017 INFO L225 Difference]: With dead ends: 38 [2019-11-15 19:49:41,017 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 19:49:41,018 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-15 19:49:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 19:49:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 19:49:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 19:49:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 19:49:41,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-11-15 19:49:41,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:49:41,019 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 19:49:41,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 19:49:41,020 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 19:49:41,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 19:49:41,224 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:49:41,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 19:49:41,247 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2019-11-15 19:49:41,247 INFO L446 ceAbstractionStarter]: At program point L23-3(lines 23 24) the Hoare annotation is: true [2019-11-15 19:49:41,247 INFO L443 ceAbstractionStarter]: For program point L23-4(lines 23 24) no Hoare annotation was computed. [2019-11-15 19:49:41,247 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 20) no Hoare annotation was computed. [2019-11-15 19:49:41,247 INFO L446 ceAbstractionStarter]: At program point L19-3(lines 19 20) the Hoare annotation is: true [2019-11-15 19:49:41,247 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 20) no Hoare annotation was computed. [2019-11-15 19:49:41,247 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-15 19:49:41,247 INFO L443 ceAbstractionStarter]: For program point L32-1(lines 32 33) no Hoare annotation was computed. [2019-11-15 19:49:41,248 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 19:49:41,248 INFO L446 ceAbstractionStarter]: At program point L32-3(lines 32 33) the Hoare annotation is: true [2019-11-15 19:49:41,248 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 19:49:41,248 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 15 58) no Hoare annotation was computed. [2019-11-15 19:49:41,248 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 28 29) no Hoare annotation was computed. [2019-11-15 19:49:41,248 INFO L446 ceAbstractionStarter]: At program point L28-3(lines 28 29) the Hoare annotation is: true [2019-11-15 19:49:41,248 INFO L446 ceAbstractionStarter]: At program point L57(lines 14 58) the Hoare annotation is: true [2019-11-15 19:49:41,249 INFO L443 ceAbstractionStarter]: For program point L28-4(lines 28 29) no Hoare annotation was computed. [2019-11-15 19:49:41,249 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-15 19:49:41,249 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-11-15 19:49:41,249 INFO L446 ceAbstractionStarter]: At program point L41-2(lines 39 51) the Hoare annotation is: true [2019-11-15 19:49:41,249 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 19:49:41,249 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-15 19:49:41,249 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-15 19:49:41,250 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-15 19:49:41,250 INFO L446 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2019-11-15 19:49:41,250 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-15 19:49:41,250 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 51) no Hoare annotation was computed. [2019-11-15 19:49:41,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 07:49:41 BoogieIcfgContainer [2019-11-15 19:49:41,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 19:49:41,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 19:49:41,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 19:49:41,258 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 19:49:41,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:49:39" (3/4) ... [2019-11-15 19:49:41,262 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 19:49:41,275 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-15 19:49:41,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 19:49:41,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 19:49:41,353 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0ad83f3f-8692-4af0-a6aa-16730d7804ab/bin/uautomizer/witness.graphml [2019-11-15 19:49:41,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 19:49:41,355 INFO L168 Benchmark]: Toolchain (without parser) took 2650.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -70.1 MB). Peak memory consumption was 74.6 MB. Max. memory is 11.5 GB. [2019-11-15 19:49:41,356 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:49:41,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 19:49:41,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.83 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. [2019-11-15 19:49:41,357 INFO L168 Benchmark]: Boogie Preprocessor took 62.64 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. [2019-11-15 19:49:41,357 INFO L168 Benchmark]: RCFGBuilder took 429.40 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2019-11-15 19:49:41,358 INFO L168 Benchmark]: TraceAbstraction took 1667.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.6 MB). Peak memory consumption was 85.6 MB. Max. memory is 11.5 GB. [2019-11-15 19:49:41,358 INFO L168 Benchmark]: Witness Printer took 95.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:49:41,360 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 345.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.83 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. * Boogie Preprocessor took 62.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 429.40 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1667.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.6 MB). Peak memory consumption was 85.6 MB. Max. memory is 11.5 GB. * Witness Printer took 95.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 29 SDslu, 94 SDs, 0 SdLazy, 72 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, 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, 4 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 130 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 3682 SizeOfPredicates, 6 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 14/20 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...