./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.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_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/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 950600dbb36b2cdf644bab2e11db14741ba73676 ......................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:55:21,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:55:21,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:55:21,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:55:21,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:55:21,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:55:21,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:55:21,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:55:21,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:55:21,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:55:21,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:55:21,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:55:21,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:55:22,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:55:22,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:55:22,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:55:22,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:55:22,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:55:22,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:55:22,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:55:22,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:55:22,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:55:22,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:55:22,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:55:22,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:55:22,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:55:22,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:55:22,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:55:22,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:55:22,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:55:22,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:55:22,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:55:22,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:55:22,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:55:22,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:55:22,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:55:22,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:55:22,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:55:22,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:55:22,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:55:22,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:55:22,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:55:22,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:55:22,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:55:22,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:55:22,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:55:22,109 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:55:22,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:55:22,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:55:22,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:55:22,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:55:22,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:55:22,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:55:22,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:55:22,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:55:22,113 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:55:22,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:55:22,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:55:22,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:55:22,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:55:22,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:55:22,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:55:22,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:55:22,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:55:22,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:55:22,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:55:22,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:55:22,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:55:22,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:55:22,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:55:22,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:55:22,117 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_8558f96a-5294-499f-8ba3-b97f010ae43a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950600dbb36b2cdf644bab2e11db14741ba73676 [2020-11-29 20:55:22,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:55:22,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:55:22,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:55:22,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:55:22,497 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:55:22,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2020-11-29 20:55:22,588 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/data/ecc14a661/734b91845ac54f95a2cc61c36c617d7a/FLAG0343e9715 [2020-11-29 20:55:23,218 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:55:23,220 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2020-11-29 20:55:23,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/data/ecc14a661/734b91845ac54f95a2cc61c36c617d7a/FLAG0343e9715 [2020-11-29 20:55:23,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/data/ecc14a661/734b91845ac54f95a2cc61c36c617d7a [2020-11-29 20:55:23,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:55:23,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:55:23,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:55:23,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:55:23,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:55:23,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be21b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23, skipping insertion in model container [2020-11-29 20:55:23,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:55:23,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:55:23,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:55:23,809 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:55:23,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:55:23,843 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:55:23,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23 WrapperNode [2020-11-29 20:55:23,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:55:23,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:55:23,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:55:23,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:55:23,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:55:23,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:55:23,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:55:23,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:55:23,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... [2020-11-29 20:55:23,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:55:23,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:55:23,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:55:23,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:55:23,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/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 20:55:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:55:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:55:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:55:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:55:24,487 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:55:24,488 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:55:24,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:55:24 BoogieIcfgContainer [2020-11-29 20:55:24,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:55:24,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:55:24,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:55:24,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:55:24,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:55:23" (1/3) ... [2020-11-29 20:55:24,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f83148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:55:24, skipping insertion in model container [2020-11-29 20:55:24,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:23" (2/3) ... [2020-11-29 20:55:24,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f83148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:55:24, skipping insertion in model container [2020-11-29 20:55:24,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:55:24" (3/3) ... [2020-11-29 20:55:24,504 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark09_conjunctive.i [2020-11-29 20:55:24,517 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:55:24,522 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:55:24,536 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:55:24,575 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:55:24,576 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:55:24,576 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:55:24,576 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:55:24,576 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:55:24,577 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:55:24,577 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:55:24,577 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:55:24,595 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 20:55:24,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:55:24,600 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:55:24,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:55:24,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:55:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:55:24,610 INFO L82 PathProgramCache]: Analyzing trace with hash 189970679, now seen corresponding path program 1 times [2020-11-29 20:55:24,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:55:24,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632142297] [2020-11-29 20:55:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:55:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:24,826 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 20:55:24,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632142297] [2020-11-29 20:55:24,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:55:24,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:55:24,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394944252] [2020-11-29 20:55:24,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:55:24,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:55:24,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:55:24,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:55:24,857 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-29 20:55:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:55:24,876 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2020-11-29 20:55:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:55:24,878 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 20:55:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:55:24,890 INFO L225 Difference]: With dead ends: 23 [2020-11-29 20:55:24,891 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 20:55:24,903 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 20:55:24,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 20:55:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 20:55:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 20:55:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-29 20:55:24,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2020-11-29 20:55:24,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:55:24,946 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-29 20:55:24,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:55:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-29 20:55:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:55:24,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:55:24,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:55:24,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:55:24,950 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:55:24,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:55:24,954 INFO L82 PathProgramCache]: Analyzing trace with hash 181658990, now seen corresponding path program 1 times [2020-11-29 20:55:24,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:55:24,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918458276] [2020-11-29 20:55:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:55:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:25,297 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 20:55:25,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918458276] [2020-11-29 20:55:25,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:55:25,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:55:25,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222361580] [2020-11-29 20:55:25,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:55:25,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:55:25,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:55:25,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:55:25,301 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 5 states. [2020-11-29 20:55:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:55:25,393 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-11-29 20:55:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:55:25,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-29 20:55:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:55:25,395 INFO L225 Difference]: With dead ends: 16 [2020-11-29 20:55:25,395 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 20:55:25,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:55:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 20:55:25,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 20:55:25,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 20:55:25,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-29 20:55:25,404 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-11-29 20:55:25,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:55:25,404 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-29 20:55:25,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:55:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-29 20:55:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:55:25,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:55:25,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:55:25,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:55:25,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:55:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:55:25,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1388084395, now seen corresponding path program 1 times [2020-11-29 20:55:25,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:55:25,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29053913] [2020-11-29 20:55:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:55:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:25,560 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 20:55:25,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29053913] [2020-11-29 20:55:25,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:55:25,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:55:25,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002862275] [2020-11-29 20:55:25,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:55:25,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:55:25,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:55:25,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:55:25,563 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2020-11-29 20:55:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:55:25,619 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-29 20:55:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:55:25,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 20:55:25,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:55:25,621 INFO L225 Difference]: With dead ends: 16 [2020-11-29 20:55:25,621 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 20:55:25,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:55:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 20:55:25,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 20:55:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 20:55:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 20:55:25,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-29 20:55:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:55:25,625 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 20:55:25,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:55:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 20:55:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:55:25,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:55:25,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:55:25,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:55:25,627 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:55:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:55:25,630 INFO L82 PathProgramCache]: Analyzing trace with hash 127948681, now seen corresponding path program 1 times [2020-11-29 20:55:25,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:55:25,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587280972] [2020-11-29 20:55:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:55:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:25,772 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 20:55:25,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587280972] [2020-11-29 20:55:25,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639592066] [2020-11-29 20:55:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/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 20:55:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:25,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:55:25,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:55:25,987 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:55:26,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:55:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:55:26,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:55:26,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2020-11-29 20:55:26,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114859681] [2020-11-29 20:55:26,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:55:26,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:55:26,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:55:26,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:55:26,037 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2020-11-29 20:55:26,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:55:26,119 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-29 20:55:26,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:55:26,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 20:55:26,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:55:26,120 INFO L225 Difference]: With dead ends: 11 [2020-11-29 20:55:26,120 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:55:26,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:55:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:55:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:55:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:55:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:55:26,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-29 20:55:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:55:26,122 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:55:26,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:55:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:55:26,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:55:26,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:55:26,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:55:26,398 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:55:26,398 INFO L277 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-11-29 20:55:26,399 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~x~0)) [2020-11-29 20:55:26,399 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2020-11-29 20:55:26,399 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 20:55:26,399 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 20:55:26,399 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-29 20:55:26,399 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:55:26,399 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:55:26,399 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:55:26,400 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-29 20:55:26,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-29 20:55:26,400 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-29 20:55:26,400 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-29 20:55:26,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:55:26 BoogieIcfgContainer [2020-11-29 20:55:26,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:55:26,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:55:26,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:55:26,421 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:55:26,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:55:24" (3/4) ... [2020-11-29 20:55:26,424 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:55:26,436 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 20:55:26,437 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:55:26,437 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:55:26,437 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:55:26,496 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8558f96a-5294-499f-8ba3-b97f010ae43a/bin/uautomizer/witness.graphml [2020-11-29 20:55:26,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:55:26,498 INFO L168 Benchmark]: Toolchain (without parser) took 2945.96 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 65.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:26,498 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 88.1 MB. Free memory was 69.5 MB in the beginning and 69.4 MB in the end (delta: 61.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:55:26,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.80 ms. Allocated memory is still 88.1 MB. Free memory was 53.1 MB in the beginning and 66.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:26,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.62 ms. Allocated memory is still 88.1 MB. Free memory was 66.4 MB in the beginning and 65.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:26,514 INFO L168 Benchmark]: Boogie Preprocessor took 22.86 ms. Allocated memory is still 88.1 MB. Free memory was 65.1 MB in the beginning and 64.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:55:26,514 INFO L168 Benchmark]: RCFGBuilder took 585.16 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 52.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:26,515 INFO L168 Benchmark]: TraceAbstraction took 1925.48 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 52.5 MB in the beginning and 68.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:26,516 INFO L168 Benchmark]: Witness Printer took 75.80 ms. Allocated memory is still 109.1 MB. Free memory was 68.5 MB in the beginning and 65.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:26,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 88.1 MB. Free memory was 69.5 MB in the beginning and 69.4 MB in the end (delta: 61.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.80 ms. Allocated memory is still 88.1 MB. Free memory was 53.1 MB in the beginning and 66.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.62 ms. Allocated memory is still 88.1 MB. Free memory was 66.4 MB in the beginning and 65.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.86 ms. Allocated memory is still 88.1 MB. Free memory was 65.1 MB in the beginning and 64.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 585.16 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 52.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1925.48 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 52.5 MB in the beginning and 68.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Witness Printer took 75.80 ms. Allocated memory is still 109.1 MB. Free memory was 68.5 MB in the beginning and 65.9 MB in the end (delta: 2.7 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: 11]: 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: 23]: Loop Invariant Derived loop invariant: (x <= y && y <= x) && 0 <= x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 21 SDslu, 18 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 11 HoareAnnotationTreeSize, 2 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1072 SizeOfPredicates, 4 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 1/2 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...