./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/loopv1.c --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_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/loopv1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7062369ded29eb59a5ee586d71a51c80ef84234b ................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:01,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:01,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:01,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:01,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:01,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:01,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:01,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:01,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:01,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:01,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:01,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:01,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:01,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:01,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:01,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:01,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:01,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:01,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:01,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:01,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:01,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:01,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:01,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:01,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:01,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:01,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:01,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:01,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:01,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:01,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:01,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:01,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:01,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:01,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:01,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:01,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:01,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:01,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:01,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:01,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:01,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:01,936 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:01,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:01,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:01,938 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:01,938 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:01,938 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:01,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:01,939 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:01,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:01,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:01,939 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:01,940 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:01,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:01,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:01,940 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:01,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:01,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:01,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:01,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:01,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:01,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:01,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:01,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:01,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:01,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:01,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:01,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:01,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:01,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:01,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:01,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:01,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:01,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:01,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:01,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:01,946 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:01,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:01,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:01,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:01,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:01,947 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7062369ded29eb59a5ee586d71a51c80ef84234b [2020-11-28 07:42:02,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:02,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:02,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:02,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:02,244 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:02,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/../../sv-benchmarks/c/loops-crafted-1/loopv1.c [2020-11-28 07:42:02,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/data/7df0b70c5/30368e75369b4810af049f7d07d2f5eb/FLAGeae5f7f32 [2020-11-28 07:42:02,774 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:02,775 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/sv-benchmarks/c/loops-crafted-1/loopv1.c [2020-11-28 07:42:02,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/data/7df0b70c5/30368e75369b4810af049f7d07d2f5eb/FLAGeae5f7f32 [2020-11-28 07:42:02,798 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/data/7df0b70c5/30368e75369b4810af049f7d07d2f5eb [2020-11-28 07:42:02,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:02,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:02,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:02,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:02,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:02,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272d24dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02, skipping insertion in model container [2020-11-28 07:42:02,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:02,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:03,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:03,051 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:03,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:03,080 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:03,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03 WrapperNode [2020-11-28 07:42:03,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:03,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:03,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:03,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:03,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:03,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:03,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:03,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:03,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:03,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:03,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:03,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:03,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:03,759 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:03,759 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:03,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:03 BoogieIcfgContainer [2020-11-28 07:42:03,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:03,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:03,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:03,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:03,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:02" (1/3) ... [2020-11-28 07:42:03,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d24cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:03, skipping insertion in model container [2020-11-28 07:42:03,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (2/3) ... [2020-11-28 07:42:03,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d24cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:03, skipping insertion in model container [2020-11-28 07:42:03,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:03" (3/3) ... [2020-11-28 07:42:03,774 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-11-28 07:42:03,788 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:03,793 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:03,805 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:03,844 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:03,845 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:03,845 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:03,845 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:03,845 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:03,845 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:03,846 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:03,846 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-28 07:42:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:42:03,866 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:03,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:42:03,868 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:03,875 INFO L82 PathProgramCache]: Analyzing trace with hash 68597110, now seen corresponding path program 1 times [2020-11-28 07:42:03,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:03,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997233425] [2020-11-28 07:42:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:04,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997233425] [2020-11-28 07:42:04,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:04,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:42:04,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124684287] [2020-11-28 07:42:04,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:04,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:04,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:04,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:04,192 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-11-28 07:42:04,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:04,268 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-11-28 07:42:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:04,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:42:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:04,287 INFO L225 Difference]: With dead ends: 21 [2020-11-28 07:42:04,297 INFO L226 Difference]: Without dead ends: 7 [2020-11-28 07:42:04,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-28 07:42:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-28 07:42:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 07:42:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-28 07:42:04,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-11-28 07:42:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:04,332 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-11-28 07:42:04,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-28 07:42:04,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:42:04,333 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:04,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:42:04,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:04,334 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:04,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2126470017, now seen corresponding path program 1 times [2020-11-28 07:42:04,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:04,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117566433] [2020-11-28 07:42:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:04,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117566433] [2020-11-28 07:42:04,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839751752] [2020-11-28 07:42:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:42:04,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:04,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:42:04,688 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:42:04,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:42:04,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:42:04,701 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:42:04,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:42:04,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:42:04,712 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 2, 2, 2, 2, 3, 2, 1] term [2020-11-28 07:42:04,713 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 07:42:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:04,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:04,755 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:04,757 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:04,759 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:04,770 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:04,774 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:04,775 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:04,777 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:04,863 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:04,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [804975739] [2020-11-28 07:42:04,965 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-28 07:42:04,965 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:42:04,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:42:04,978 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:42:04,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:42:05,286 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:42:05,677 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-11-28 07:42:05,866 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-11-28 07:42:06,027 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-11-28 07:42:06,236 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-11-28 07:42:06,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:42:06,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:42:06,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2020-11-28 07:42:06,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236265601] [2020-11-28 07:42:06,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:42:06,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:06,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:42:06,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:42:06,242 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 9 states. [2020-11-28 07:42:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:06,373 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-11-28 07:42:06,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:42:06,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2020-11-28 07:42:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:06,374 INFO L225 Difference]: With dead ends: 9 [2020-11-28 07:42:06,374 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:06,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:42:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:06,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-11-28 07:42:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:06,377 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:06,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:42:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:06,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:06,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:42:06,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:06,657 INFO L277 CegarLoopResult]: At program point L33(lines 20 34) the Hoare annotation is: true [2020-11-28 07:42:06,657 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:06,657 INFO L270 CegarLoopResult]: At program point L27-2(lines 25 31) the Hoare annotation is: (or (= ULTIMATE.start_main_~i~0 0) (and (<= 1 ULTIMATE.start_main_~n~0) (< (div (+ (* ULTIMATE.start_main_~i~0 (- 1)) (- 6)) (- 3)) (+ (div (+ ULTIMATE.start_main_~i~0 3) 3) 2)))) [2020-11-28 07:42:06,657 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 07:42:06,658 INFO L274 CegarLoopResult]: For program point L13(lines 13 15) no Hoare annotation was computed. [2020-11-28 07:42:06,658 INFO L270 CegarLoopResult]: At program point L13-2(lines 12 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-28 07:42:06,658 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:06,658 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-11-28 07:42:06,658 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-28 07:42:06,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:06 BoogieIcfgContainer [2020-11-28 07:42:06,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:06,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:06,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:06,675 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:06,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:03" (3/4) ... [2020-11-28 07:42:06,678 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:06,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 07:42:06,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:42:06,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:06,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:06,724 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1b8c1667-a3b4-4b64-8a3d-f9269ecce48b/bin/utaipan/witness.graphml [2020-11-28 07:42:06,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:06,726 INFO L168 Benchmark]: Toolchain (without parser) took 3923.45 ms. Allocated memory was 111.1 MB in the beginning and 148.9 MB in the end (delta: 37.7 MB). Free memory was 75.3 MB in the beginning and 76.1 MB in the end (delta: -809.0 kB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,727 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 87.1 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:06,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.28 ms. Allocated memory is still 111.1 MB. Free memory was 75.0 MB in the beginning and 87.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.38 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 85.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,728 INFO L168 Benchmark]: Boogie Preprocessor took 43.22 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 84.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:06,729 INFO L168 Benchmark]: RCFGBuilder took 598.71 ms. Allocated memory is still 111.1 MB. Free memory was 84.3 MB in the beginning and 69.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,730 INFO L168 Benchmark]: TraceAbstraction took 2910.76 ms. Allocated memory was 111.1 MB in the beginning and 148.9 MB in the end (delta: 37.7 MB). Free memory was 69.4 MB in the beginning and 79.2 MB in the end (delta: -9.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,730 INFO L168 Benchmark]: Witness Printer took 50.90 ms. Allocated memory is still 148.9 MB. Free memory was 79.2 MB in the beginning and 76.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 87.1 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.28 ms. Allocated memory is still 111.1 MB. Free memory was 75.0 MB in the beginning and 87.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.38 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 85.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.22 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 84.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 598.71 ms. Allocated memory is still 111.1 MB. Free memory was 84.3 MB in the beginning and 69.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2910.76 ms. Allocated memory was 111.1 MB in the beginning and 148.9 MB in the end (delta: 37.7 MB). Free memory was 69.4 MB in the beginning and 79.2 MB in the end (delta: -9.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 50.90 ms. Allocated memory is still 148.9 MB. Free memory was 79.2 MB in the beginning and 76.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 12]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: i == 0 || (1 <= n && (i * -1 + -6) / -3 < (i + 3) / 3 + 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 13 SDslu, 16 SDs, 0 SdLazy, 25 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 28 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 396 SizeOfPredicates, 6 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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...