./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i -s /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53bb793d04b8582ac13d1842856082c93ca272cf ........................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:20,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:20,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:20,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:20,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:20,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:20,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:20,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:20,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:20,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:20,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:20,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:20,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:20,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:20,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:20,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:20,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:20,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:20,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:20,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:20,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:20,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:20,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:20,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:20,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:20,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:20,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:20,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:20,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:20,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:20,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:20,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:20,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:20,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:20,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:20,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:20,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:20,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:20,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:20,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:20,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:20,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:20,790 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:20,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:20,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:20,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:20,792 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:20,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:20,793 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:20,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:20,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:20,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:20,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:20,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:20,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:20,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:20,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:20,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:20,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:20,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:20,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:20,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:20,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:20,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:20,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:20,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:20,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:20,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:20,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:20,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:20,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:20,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53bb793d04b8582ac13d1842856082c93ca272cf [2020-11-28 02:56:21,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:21,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:21,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:21,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:21,141 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:21,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2020-11-28 02:56:21,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/data/3b8645792/fe091bd6ca104fe2985a41721be0fc00/FLAG58de01e7f [2020-11-28 02:56:21,735 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:21,736 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2020-11-28 02:56:21,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/data/3b8645792/fe091bd6ca104fe2985a41721be0fc00/FLAG58de01e7f [2020-11-28 02:56:22,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/data/3b8645792/fe091bd6ca104fe2985a41721be0fc00 [2020-11-28 02:56:22,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:22,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:22,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:22,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:22,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecf364c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:22,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:22,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,358 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:22,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,387 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:22,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22 WrapperNode [2020-11-28 02:56:22,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:22,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:22,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:22,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:22,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:22,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:22,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:22,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/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 [2020-11-28 02:56:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:22,875 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:22,875 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 02:56:22,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22 BoogieIcfgContainer [2020-11-28 02:56:22,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:22,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:22,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:22,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:22,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:22" (1/3) ... [2020-11-28 02:56:22,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c29fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (2/3) ... [2020-11-28 02:56:22,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c29fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/3) ... [2020-11-28 02:56:22,887 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-11-28 02:56:22,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:22,900 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:56:22,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:56:22,932 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:22,932 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:22,932 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:22,933 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:22,933 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:22,933 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:22,933 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:22,933 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-28 02:56:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:56:22,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:22,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:22,952 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:22,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:22,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1446203657, now seen corresponding path program 1 times [2020-11-28 02:56:22,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:22,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453432353] [2020-11-28 02:56:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:23,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453432353] [2020-11-28 02:56:23,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:23,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:23,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458146052] [2020-11-28 02:56:23,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:56:23,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:23,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:23,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:23,114 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-28 02:56:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:23,127 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-11-28 02:56:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:23,128 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 02:56:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:23,137 INFO L225 Difference]: With dead ends: 25 [2020-11-28 02:56:23,137 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 02:56:23,140 INFO L677 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 [2020-11-28 02:56:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 02:56:23,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 02:56:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:56:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-28 02:56:23,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-11-28 02:56:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:23,173 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-28 02:56:23,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:56:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-28 02:56:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:56:23,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:23,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:23,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:23,174 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:23,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1331687053, now seen corresponding path program 1 times [2020-11-28 02:56:23,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949908729] [2020-11-28 02:56:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:23,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949908729] [2020-11-28 02:56:23,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:23,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:23,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504476914] [2020-11-28 02:56:23,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:23,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:23,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:23,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:23,247 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-11-28 02:56:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:23,273 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-28 02:56:23,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:23,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 02:56:23,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:23,275 INFO L225 Difference]: With dead ends: 17 [2020-11-28 02:56:23,275 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 02:56:23,276 INFO L677 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 [2020-11-28 02:56:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 02:56:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 02:56:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 02:56:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 02:56:23,279 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-28 02:56:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:23,279 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 02:56:23,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 02:56:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:56:23,280 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:23,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:23,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:23,281 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:23,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,282 INFO L82 PathProgramCache]: Analyzing trace with hash -66976811, now seen corresponding path program 1 times [2020-11-28 02:56:23,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157459996] [2020-11-28 02:56:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:23,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157459996] [2020-11-28 02:56:23,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944594504] [2020-11-28 02:56:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/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 [2020-11-28 02:56:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:23,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 02:56:23,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:23,839 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 02:56:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:23,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:23,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-11-28 02:56:23,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887207164] [2020-11-28 02:56:23,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 02:56:23,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:23,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 02:56:23,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:56:23,893 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 11 states. [2020-11-28 02:56:24,086 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-28 02:56:24,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:24,110 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-28 02:56:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:24,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-11-28 02:56:24,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:24,112 INFO L225 Difference]: With dead ends: 18 [2020-11-28 02:56:24,112 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 02:56:24,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:56:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 02:56:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 02:56:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 02:56:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 02:56:24,116 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-11-28 02:56:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:24,117 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 02:56:24,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 02:56:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 02:56:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:24,117 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:24,120 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:24,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 02:56:24,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:24,321 INFO L82 PathProgramCache]: Analyzing trace with hash -475883635, now seen corresponding path program 2 times [2020-11-28 02:56:24,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:24,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19846565] [2020-11-28 02:56:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:24,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19846565] [2020-11-28 02:56:24,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174842272] [2020-11-28 02:56:24,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/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 [2020-11-28 02:56:24,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:56:24,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:24,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-28 02:56:24,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:24,778 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:24,785 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-28 02:56:24,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:24,797 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:24,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:24,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:24,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-11-28 02:56:24,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503169410] [2020-11-28 02:56:24,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 02:56:24,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:24,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 02:56:24,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:56:24,827 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2020-11-28 02:56:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:25,153 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-28 02:56:25,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:56:25,154 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-11-28 02:56:25,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:25,154 INFO L225 Difference]: With dead ends: 15 [2020-11-28 02:56:25,154 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:25,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-11-28 02:56:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:25,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-11-28 02:56:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:25,157 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:25,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 02:56:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:25,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:25,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:25,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:56:25,427 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:56:25,427 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-28 02:56:25,427 INFO L277 CegarLoopResult]: At program point L36(lines 24 37) the Hoare annotation is: true [2020-11-28 02:56:25,427 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:56:25,427 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:56:25,427 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:56:25,427 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-28 02:56:25,428 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 34) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~lo~0 (* 2 ULTIMATE.start_main_~mid~0)))) (and (<= .cse0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~lo~0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~hi~0 .cse0))) [2020-11-28 02:56:25,428 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2020-11-28 02:56:25,428 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 02:56:25,428 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-28 02:56:25,428 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-28 02:56:25,428 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 02:56:25,428 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 02:56:25,428 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 02:56:25,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:25 BoogieIcfgContainer [2020-11-28 02:56:25,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:25,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:25,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:25,444 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:25,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/4) ... [2020-11-28 02:56:25,448 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:25,457 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 02:56:25,457 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:56:25,457 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:25,458 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:25,496 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_53cc7308-ebf4-44e3-92cd-c37099b544fc/bin/uautomizer/witness.graphml [2020-11-28 02:56:25,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:25,498 INFO L168 Benchmark]: Toolchain (without parser) took 3389.32 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 46.6 MB in the beginning and 55.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:25,499 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 53.2 MB in the beginning and 53.1 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:25,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.69 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 46.2 MB in the beginning and 76.8 MB in the end (delta: -30.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:25,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.14 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 75.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:25,501 INFO L168 Benchmark]: Boogie Preprocessor took 22.12 ms. Allocated memory is still 98.6 MB. Free memory was 75.1 MB in the beginning and 74.1 MB in the end (delta: 965.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:25,501 INFO L168 Benchmark]: RCFGBuilder took 429.62 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 63.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:25,502 INFO L168 Benchmark]: TraceAbstraction took 2564.50 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 57.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:25,502 INFO L168 Benchmark]: Witness Printer took 53.29 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 55.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:25,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 53.2 MB in the beginning and 53.1 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.69 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 46.2 MB in the beginning and 76.8 MB in the end (delta: -30.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.14 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 75.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.12 ms. Allocated memory is still 98.6 MB. Free memory was 75.1 MB in the beginning and 74.1 MB in the end (delta: 965.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 429.62 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 63.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2564.50 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 57.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Witness Printer took 53.29 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 55.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (lo + 2 * mid <= hi && lo <= hi) && hi <= lo + 2 * mid - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 21 SDslu, 33 SDs, 0 SdLazy, 63 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 20 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 97 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2795 SizeOfPredicates, 10 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...