./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/heavy-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/heavy-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63303d7ef35f153a8bd897bdcb496a54fed422c9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:57:33,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:57:33,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:57:33,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:57:33,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:57:33,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:57:33,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:57:33,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:57:33,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:57:33,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:57:33,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:57:33,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:57:33,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:57:33,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:57:33,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:57:33,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:57:33,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:57:33,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:57:33,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:57:33,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:57:33,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:57:33,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:57:33,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:57:33,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:57:33,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:57:33,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:57:33,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:57:33,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:57:33,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:57:33,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:57:33,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:57:33,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:57:33,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:57:33,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:57:33,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:57:33,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:57:33,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:57:33,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:57:33,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:57:33,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:57:33,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:57:33,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:57:34,012 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:57:34,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:57:34,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:57:34,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:57:34,014 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:57:34,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:57:34,014 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:57:34,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:57:34,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:57:34,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:57:34,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:57:34,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:57:34,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:57:34,016 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:57:34,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:57:34,016 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:57:34,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:57:34,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:57:34,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:57:34,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:57:34,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:57:34,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:57:34,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:57:34,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:57:34,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:57:34,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:57:34,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:57:34,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:57:34,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63303d7ef35f153a8bd897bdcb496a54fed422c9 [2019-11-25 08:57:34,171 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:57:34,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:57:34,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:57:34,189 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:57:34,190 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:57:34,191 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/../../sv-benchmarks/c/loops/heavy-2.c [2019-11-25 08:57:34,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/data/a0da00ffe/421ba85000aa40d198d707db07828aad/FLAG63900e723 [2019-11-25 08:57:34,642 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:57:34,642 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/sv-benchmarks/c/loops/heavy-2.c [2019-11-25 08:57:34,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/data/a0da00ffe/421ba85000aa40d198d707db07828aad/FLAG63900e723 [2019-11-25 08:57:34,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/data/a0da00ffe/421ba85000aa40d198d707db07828aad [2019-11-25 08:57:34,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:57:34,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:57:34,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:34,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:57:34,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:57:34,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:34" (1/1) ... [2019-11-25 08:57:34,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@662f378f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:34, skipping insertion in model container [2019-11-25 08:57:34,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:34" (1/1) ... [2019-11-25 08:57:34,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:57:34,689 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:57:34,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:35,050 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:57:35,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:35,147 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:57:35,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35 WrapperNode [2019-11-25 08:57:35,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:35,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:35,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:57:35,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:57:35,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:35,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:57:35,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:57:35,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:57:35,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:57:35,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:57:35,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:57:35,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:57:35,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:57:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:57:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:57:35,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:57:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:57:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-25 08:57:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:57:35,520 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:57:35,520 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:57:35,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:35 BoogieIcfgContainer [2019-11-25 08:57:35,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:57:35,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:57:35,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:57:35,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:57:35,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:57:34" (1/3) ... [2019-11-25 08:57:35,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6004ef4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:57:35, skipping insertion in model container [2019-11-25 08:57:35,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (2/3) ... [2019-11-25 08:57:35,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6004ef4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:57:35, skipping insertion in model container [2019-11-25 08:57:35,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:35" (3/3) ... [2019-11-25 08:57:35,528 INFO L109 eAbstractionObserver]: Analyzing ICFG heavy-2.c [2019-11-25 08:57:35,538 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:57:35,544 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:57:35,555 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:57:35,576 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:57:35,577 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:57:35,577 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:57:35,577 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:57:35,577 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:57:35,577 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:57:35,578 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:57:35,578 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:57:35,591 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-25 08:57:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:57:35,596 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:35,597 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:57:35,598 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:35,603 INFO L82 PathProgramCache]: Analyzing trace with hash 28726599, now seen corresponding path program 1 times [2019-11-25 08:57:35,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:35,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605667188] [2019-11-25 08:57:35,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:35,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605667188] [2019-11-25 08:57:35,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:35,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:57:35,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583746159] [2019-11-25 08:57:35,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:57:35,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:35,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:57:35,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:57:35,748 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-25 08:57:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:35,763 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2019-11-25 08:57:35,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:57:35,765 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-25 08:57:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:35,773 INFO L225 Difference]: With dead ends: 26 [2019-11-25 08:57:35,773 INFO L226 Difference]: Without dead ends: 11 [2019-11-25 08:57:35,776 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:57:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-25 08:57:35,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-25 08:57:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:57:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-25 08:57:35,806 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2019-11-25 08:57:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:35,806 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-25 08:57:35,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:57:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-25 08:57:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:57:35,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:35,807 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:57:35,808 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:35,808 INFO L82 PathProgramCache]: Analyzing trace with hash 28697769, now seen corresponding path program 1 times [2019-11-25 08:57:35,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:35,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340926617] [2019-11-25 08:57:35,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:35,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340926617] [2019-11-25 08:57:35,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:35,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:57:35,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459614324] [2019-11-25 08:57:35,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:57:35,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:35,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:57:35,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:57:35,860 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2019-11-25 08:57:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:35,896 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-11-25 08:57:35,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:57:35,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-25 08:57:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:35,898 INFO L225 Difference]: With dead ends: 20 [2019-11-25 08:57:35,898 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:57:35,899 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:57:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:57:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2019-11-25 08:57:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:57:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-25 08:57:35,902 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2019-11-25 08:57:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:35,903 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-25 08:57:35,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:57:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-25 08:57:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:57:35,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:35,903 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:35,904 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:35,904 INFO L82 PathProgramCache]: Analyzing trace with hash 269702257, now seen corresponding path program 1 times [2019-11-25 08:57:35,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:35,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907350807] [2019-11-25 08:57:35,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:35,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907350807] [2019-11-25 08:57:35,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935622098] [2019-11-25 08:57:35,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:36,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:57:36,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:36,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:57:36,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2019-11-25 08:57:36,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467248940] [2019-11-25 08:57:36,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:57:36,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:36,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:57:36,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:36,077 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-11-25 08:57:36,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:36,133 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2019-11-25 08:57:36,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:57:36,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-25 08:57:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:36,134 INFO L225 Difference]: With dead ends: 34 [2019-11-25 08:57:36,134 INFO L226 Difference]: Without dead ends: 25 [2019-11-25 08:57:36,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:57:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-25 08:57:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 13. [2019-11-25 08:57:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:57:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-25 08:57:36,139 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2019-11-25 08:57:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:36,140 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-25 08:57:36,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:57:36,140 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-25 08:57:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:57:36,140 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:36,140 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:36,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:36,348 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,348 INFO L82 PathProgramCache]: Analyzing trace with hash 904437765, now seen corresponding path program 1 times [2019-11-25 08:57:36,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:36,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382339454] [2019-11-25 08:57:36,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:57:36,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382339454] [2019-11-25 08:57:36,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813251388] [2019-11-25 08:57:36,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:36,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:57:36,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:36,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:57:36,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2019-11-25 08:57:36,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678311460] [2019-11-25 08:57:36,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:57:36,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:36,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:57:36,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:36,571 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2019-11-25 08:57:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:36,623 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-11-25 08:57:36,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:57:36,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:57:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:36,624 INFO L225 Difference]: With dead ends: 33 [2019-11-25 08:57:36,624 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:57:36,625 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:57:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:57:36,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2019-11-25 08:57:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:57:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-25 08:57:36,629 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2019-11-25 08:57:36,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:36,629 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-25 08:57:36,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:57:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-25 08:57:36,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:57:36,630 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:36,630 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:36,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:36,834 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:36,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2012164797, now seen corresponding path program 1 times [2019-11-25 08:57:36,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:36,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740548059] [2019-11-25 08:57:36,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:57:36,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740548059] [2019-11-25 08:57:36,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754599256] [2019-11-25 08:57:36,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:37,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:57:37,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:37,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:57:37,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-25 08:57:37,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598418612] [2019-11-25 08:57:37,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:57:37,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:37,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:57:37,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:57:37,079 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 6 states. [2019-11-25 08:57:37,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:37,208 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2019-11-25 08:57:37,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:57:37,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-25 08:57:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:37,209 INFO L225 Difference]: With dead ends: 49 [2019-11-25 08:57:37,209 INFO L226 Difference]: Without dead ends: 38 [2019-11-25 08:57:37,210 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:57:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-25 08:57:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2019-11-25 08:57:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-25 08:57:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-25 08:57:37,216 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2019-11-25 08:57:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:37,216 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-25 08:57:37,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:57:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-25 08:57:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:57:37,217 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:37,217 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-25 08:57:37,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:37,418 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:37,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:37,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1000909991, now seen corresponding path program 2 times [2019-11-25 08:57:37,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:37,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63014673] [2019-11-25 08:57:37,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:57:37,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63014673] [2019-11-25 08:57:37,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465487543] [2019-11-25 08:57:37,612 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:37,661 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-25 08:57:37,661 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:57:37,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:57:37,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-25 08:57:37,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:57:37,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-11-25 08:57:37,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435953270] [2019-11-25 08:57:37,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:57:37,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:37,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:57:37,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:57:37,683 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2019-11-25 08:57:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:37,688 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-11-25 08:57:37,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:57:37,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-25 08:57:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:37,696 INFO L225 Difference]: With dead ends: 26 [2019-11-25 08:57:37,696 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:57:37,697 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:57:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:57:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:57:37,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:57:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:57:37,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-11-25 08:57:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:37,698 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:57:37,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:57:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:57:37,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:57:37,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:37,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:57:37,938 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:57:37,938 INFO L444 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2019-11-25 08:57:37,938 INFO L440 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (= ULTIMATE.start_main_~a~0 1) [2019-11-25 08:57:37,938 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:57:37,938 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:57:37,939 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:57:37,939 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2019-11-25 08:57:37,939 INFO L447 ceAbstractionStarter]: At program point L20(lines 5 21) the Hoare annotation is: true [2019-11-25 08:57:37,939 INFO L440 ceAbstractionStarter]: At program point L16(lines 6 21) the Hoare annotation is: false [2019-11-25 08:57:37,939 INFO L444 ceAbstractionStarter]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2019-11-25 08:57:37,940 INFO L440 ceAbstractionStarter]: At program point L12-3(lines 12 13) the Hoare annotation is: (= ULTIMATE.start_main_~a~0 1) [2019-11-25 08:57:37,940 INFO L444 ceAbstractionStarter]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2019-11-25 08:57:37,940 INFO L440 ceAbstractionStarter]: At program point L10-3(lines 10 13) the Hoare annotation is: (= ULTIMATE.start_main_~a~0 1) [2019-11-25 08:57:37,940 INFO L444 ceAbstractionStarter]: For program point L10-4(lines 6 21) no Hoare annotation was computed. [2019-11-25 08:57:37,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:57:37 BoogieIcfgContainer [2019-11-25 08:57:37,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:57:37,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:57:37,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:57:37,956 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:57:37,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:35" (3/4) ... [2019-11-25 08:57:37,960 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:57:37,970 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-25 08:57:37,971 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:57:37,971 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:57:38,014 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9cf5df24-4b98-4fa4-8a88-03e7e0349443/bin/uautomizer/witness.graphml [2019-11-25 08:57:38,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:57:38,016 INFO L168 Benchmark]: Toolchain (without parser) took 3354.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 944.8 MB in the beginning and 973.6 MB in the end (delta: -28.8 MB). Peak memory consumption was 144.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:38,017 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:57:38,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:38,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:57:38,018 INFO L168 Benchmark]: Boogie Preprocessor took 24.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:38,019 INFO L168 Benchmark]: RCFGBuilder took 310.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:38,019 INFO L168 Benchmark]: TraceAbstraction took 2432.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.6 MB in the end (delta: 134.4 MB). Peak memory consumption was 134.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:38,019 INFO L168 Benchmark]: Witness Printer took 59.19 ms. Allocated memory is still 1.2 GB. Free memory is still 973.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:57:38,022 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 485.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 310.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2432.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.6 MB in the end (delta: 134.4 MB). Peak memory consumption was 134.4 MB. Max. memory is 11.5 GB. * Witness Printer took 59.19 ms. Allocated memory is still 1.2 GB. Free memory is still 973.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 6]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 57 SDslu, 60 SDs, 0 SdLazy, 73 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=5, 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, 6 MinimizatonAttempts, 38 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 19 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 236 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 124 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 5778 SizeOfPredicates, 6 NumberOfNonLiveVariables, 174 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 50/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...