./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.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_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/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 ad7102f2457c0f5542a3d448f84e7fa5158fff18 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:02:41,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:02:41,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:02:41,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:02:41,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:02:41,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:02:41,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:02:41,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:02:41,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:02:41,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:02:41,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:02:41,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:02:41,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:02:41,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:02:41,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:02:41,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:02:41,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:02:41,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:02:41,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:02:41,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:02:41,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:02:41,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:02:41,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:02:41,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:02:41,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:02:41,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:02:41,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:02:41,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:02:41,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:02:41,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:02:41,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:02:41,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:02:41,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:02:41,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:02:41,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:02:41,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:02:41,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:02:41,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:02:41,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:02:41,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:02:41,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:02:41,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:02:41,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:02:41,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:02:41,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:02:41,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:02:41,796 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:02:41,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:02:41,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:02:41,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:02:41,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:02:41,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:02:41,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:02:41,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:02:41,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:02:41,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:02:41,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:02:41,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:02:41,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:02:41,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:02:41,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:02:41,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:02:41,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:02:41,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:02:41,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:02:41,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:02:41,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:02:41,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:02:41,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:02:41,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:02:41,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:02:41,803 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_b8df5038-c745-4f75-b6c0-cf99284203e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad7102f2457c0f5542a3d448f84e7fa5158fff18 [2020-11-29 21:02:42,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:02:42,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:02:42,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:02:42,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:02:42,096 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:02:42,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/../../sv-benchmarks/c/loop-lit/gsv2008.i [2020-11-29 21:02:42,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/data/7437e2bcb/6ab984e9c56d400988c1dcb34b720ce4/FLAG39b318d9a [2020-11-29 21:02:42,622 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:02:42,622 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/sv-benchmarks/c/loop-lit/gsv2008.i [2020-11-29 21:02:42,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/data/7437e2bcb/6ab984e9c56d400988c1dcb34b720ce4/FLAG39b318d9a [2020-11-29 21:02:43,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/data/7437e2bcb/6ab984e9c56d400988c1dcb34b720ce4 [2020-11-29 21:02:43,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:02:43,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:02:43,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:02:43,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:02:43,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:02:43,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15365721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43, skipping insertion in model container [2020-11-29 21:02:43,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:02:43,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:02:43,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:02:43,293 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:02:43,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:02:43,334 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:02:43,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43 WrapperNode [2020-11-29 21:02:43,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:02:43,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:02:43,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:02:43,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:02:43,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:02:43,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:02:43,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:02:43,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:02:43,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... [2020-11-29 21:02:43,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:02:43,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:02:43,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:02:43,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:02:43,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/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 [2020-11-29 21:02:43,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:02:43,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:02:43,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:02:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:02:43,745 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:02:43,746 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 21:02:43,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:02:43 BoogieIcfgContainer [2020-11-29 21:02:43,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:02:43,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:02:43,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:02:43,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:02:43,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:02:43" (1/3) ... [2020-11-29 21:02:43,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5860e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:02:43, skipping insertion in model container [2020-11-29 21:02:43,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:02:43" (2/3) ... [2020-11-29 21:02:43,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5860e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:02:43, skipping insertion in model container [2020-11-29 21:02:43,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:02:43" (3/3) ... [2020-11-29 21:02:43,757 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2020-11-29 21:02:43,768 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:02:43,772 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 21:02:43,785 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 21:02:43,810 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:02:43,810 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:02:43,810 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:02:43,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:02:43,811 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:02:43,811 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:02:43,811 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:02:43,811 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:02:43,824 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 21:02:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:02:43,829 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:02:43,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:02:43,830 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:02:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:02:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1446203657, now seen corresponding path program 1 times [2020-11-29 21:02:43,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:02:43,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115854265] [2020-11-29 21:02:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:02:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:02:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:02:44,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115854265] [2020-11-29 21:02:44,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:02:44,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:02:44,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404374735] [2020-11-29 21:02:44,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:02:44,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:02:44,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:02:44,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:02:44,067 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-29 21:02:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:02:44,085 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-11-29 21:02:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:02:44,087 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 21:02:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:02:44,098 INFO L225 Difference]: With dead ends: 25 [2020-11-29 21:02:44,098 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 21:02:44,113 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 [2020-11-29 21:02:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 21:02:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 21:02:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 21:02:44,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-29 21:02:44,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-11-29 21:02:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:02:44,154 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-29 21:02:44,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:02:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-29 21:02:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:02:44,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:02:44,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:02:44,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:02:44,157 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:02:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:02:44,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1331687053, now seen corresponding path program 1 times [2020-11-29 21:02:44,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:02:44,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320446379] [2020-11-29 21:02:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:02:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:02:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:02:44,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320446379] [2020-11-29 21:02:44,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:02:44,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:02:44,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627157730] [2020-11-29 21:02:44,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:02:44,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:02:44,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:02:44,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:02:44,290 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-11-29 21:02:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:02:44,310 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-29 21:02:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:02:44,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 21:02:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:02:44,312 INFO L225 Difference]: With dead ends: 17 [2020-11-29 21:02:44,312 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 21:02:44,313 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 [2020-11-29 21:02:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 21:02:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 21:02:44,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 21:02:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 21:02:44,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-29 21:02:44,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:02:44,317 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 21:02:44,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:02:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 21:02:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:02:44,318 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:02:44,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:02:44,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:02:44,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:02:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:02:44,321 INFO L82 PathProgramCache]: Analyzing trace with hash -66976811, now seen corresponding path program 1 times [2020-11-29 21:02:44,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:02:44,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559180049] [2020-11-29 21:02:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:02:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:02:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:02:44,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559180049] [2020-11-29 21:02:44,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462182236] [2020-11-29 21:02:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/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 [2020-11-29 21:02:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:02:44,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:02:44,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:02:44,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:02:44,634 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:02:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:02:44,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:02:44,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-29 21:02:44,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538941779] [2020-11-29 21:02:44,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:02:44,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:02:44,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:02:44,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:02:44,669 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2020-11-29 21:02:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:02:44,754 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-29 21:02:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:02:44,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-11-29 21:02:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:02:44,757 INFO L225 Difference]: With dead ends: 18 [2020-11-29 21:02:44,757 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 21:02:44,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:02:44,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 21:02:44,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 21:02:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 21:02:44,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-29 21:02:44,760 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-11-29 21:02:44,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:02:44,760 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-29 21:02:44,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:02:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-29 21:02:44,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:02:44,760 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:02:44,761 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:02:44,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 21:02:44,962 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:02:44,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:02:44,962 INFO L82 PathProgramCache]: Analyzing trace with hash -475883635, now seen corresponding path program 2 times [2020-11-29 21:02:44,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:02:44,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393618161] [2020-11-29 21:02:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:02:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:02:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:02:45,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393618161] [2020-11-29 21:02:45,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836863305] [2020-11-29 21:02:45,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/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 [2020-11-29 21:02:45,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:02:45,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:02:45,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 21:02:45,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:02:45,224 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:02:45,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:02:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:02:45,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:02:45,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-29 21:02:45,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284014408] [2020-11-29 21:02:45,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:02:45,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:02:45,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:02:45,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:02:45,260 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2020-11-29 21:02:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:02:45,332 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-29 21:02:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:02:45,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-29 21:02:45,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:02:45,334 INFO L225 Difference]: With dead ends: 19 [2020-11-29 21:02:45,334 INFO L226 Difference]: Without dead ends: 13 [2020-11-29 21:02:45,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:02:45,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-29 21:02:45,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-29 21:02:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 21:02:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-29 21:02:45,338 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-11-29 21:02:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:02:45,339 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-29 21:02:45,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:02:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-29 21:02:45,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:02:45,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:02:45,340 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:02:45,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:02:45,540 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:02:45,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:02:45,541 INFO L82 PathProgramCache]: Analyzing trace with hash -267093291, now seen corresponding path program 3 times [2020-11-29 21:02:45,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:02:45,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409706577] [2020-11-29 21:02:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:02:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:02:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 21:02:45,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409706577] [2020-11-29 21:02:45,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:02:45,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:02:45,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43956868] [2020-11-29 21:02:45,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:02:45,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:02:45,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:02:45,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:02:45,611 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-11-29 21:02:45,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:02:45,677 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-29 21:02:45,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:02:45,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 21:02:45,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:02:45,678 INFO L225 Difference]: With dead ends: 13 [2020-11-29 21:02:45,678 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:02:45,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:02:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:02:45,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:02:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:02:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:02:45,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-29 21:02:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:02:45,680 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:02:45,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:02:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:02:45,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:02:45,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:02:45,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:02:45,720 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:02:45,721 INFO L270 CegarLoopResult]: At program point L29-2(lines 29 32) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~x~0 2) ULTIMATE.start_main_~y~0) (<= (+ ULTIMATE.start_main_~x~0 50) 0)) [2020-11-29 21:02:45,721 INFO L274 CegarLoopResult]: For program point L29-3(lines 29 32) no Hoare annotation was computed. [2020-11-29 21:02:45,721 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-29 21:02:45,721 INFO L277 CegarLoopResult]: At program point L34(lines 24 35) the Hoare annotation is: true [2020-11-29 21:02:45,721 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:02:45,721 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:02:45,721 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:02:45,721 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-29 21:02:45,722 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 21:02:45,722 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-29 21:02:45,722 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-29 21:02:45,722 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 21:02:45,722 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 21:02:45,722 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-29 21:02:45,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:02:45 BoogieIcfgContainer [2020-11-29 21:02:45,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:02:45,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:02:45,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:02:45,735 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:02:45,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:02:43" (3/4) ... [2020-11-29 21:02:45,739 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:02:45,749 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 21:02:45,749 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:02:45,750 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:02:45,750 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:02:45,786 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b8df5038-c745-4f75-b6c0-cf99284203e5/bin/uautomizer/witness.graphml [2020-11-29 21:02:45,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:02:45,788 INFO L168 Benchmark]: Toolchain (without parser) took 2759.64 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 74.2 MB in the beginning and 62.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:02:45,789 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 73.4 MB. Free memory was 32.0 MB in the beginning and 31.9 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:02:45,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.73 ms. Allocated memory is still 107.0 MB. Free memory was 74.0 MB in the beginning and 83.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:02:45,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.30 ms. Allocated memory is still 107.0 MB. Free memory was 83.0 MB in the beginning and 81.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:02:45,791 INFO L168 Benchmark]: Boogie Preprocessor took 21.81 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 81.0 MB in the end (delta: 542.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:02:45,791 INFO L168 Benchmark]: RCFGBuilder took 344.67 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 70.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:02:45,792 INFO L168 Benchmark]: TraceAbstraction took 1985.46 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.5 MB in the beginning and 65.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:02:45,793 INFO L168 Benchmark]: Witness Printer took 51.64 ms. Allocated memory is still 130.0 MB. Free memory was 65.9 MB in the beginning and 62.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:02:45,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 73.4 MB. Free memory was 32.0 MB in the beginning and 31.9 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.73 ms. Allocated memory is still 107.0 MB. Free memory was 74.0 MB in the beginning and 83.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.30 ms. Allocated memory is still 107.0 MB. Free memory was 83.0 MB in the beginning and 81.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.81 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 81.0 MB in the end (delta: 542.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 344.67 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 70.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1985.46 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.5 MB in the beginning and 65.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 51.64 ms. Allocated memory is still 130.0 MB. Free memory was 65.9 MB in the beginning and 62.9 MB in the end (delta: 3.0 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: 29]: Loop Invariant Derived loop invariant: x + 2 <= y || x + 50 <= 0 - 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: 1.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 9 SDslu, 61 SDs, 0 SdLazy, 71 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 1521 SizeOfPredicates, 8 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 6/14 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...