./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ff3652fa62b489d4e6a4a85c8349c06d13bd2232 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:09:15,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:09:15,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:09:15,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:09:15,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:09:15,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:09:15,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:09:15,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:09:15,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:09:15,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:09:15,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:09:15,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:09:15,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:09:15,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:09:15,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:09:15,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:09:15,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:09:15,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:09:15,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:09:15,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:09:15,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:09:15,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:09:15,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:09:15,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:09:15,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:09:15,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:09:15,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:09:15,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:09:15,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:09:15,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:09:15,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:09:15,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:09:15,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:09:15,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:09:15,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:09:15,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:09:15,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:09:15,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:09:15,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:09:15,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:09:15,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:09:15,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 06:09:15,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:09:15,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:09:15,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:09:15,197 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:09:15,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:09:15,197 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:09:15,197 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:09:15,198 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:09:15,198 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:09:15,198 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:09:15,198 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:09:15,198 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:09:15,198 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:09:15,198 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:09:15,198 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:09:15,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:09:15,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 06:09:15,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:09:15,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:09:15,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:09:15,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:09:15,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:09:15,200 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 06:09:15,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:09:15,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:09:15,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:09:15,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:09:15,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:09:15,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:09:15,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:09:15,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:09:15,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:09:15,201 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:09:15,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:09:15,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:09:15,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:09:15,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:09:15,201 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_9b3cad7b-9cd5-4805-98ee-ad3788754d58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2020-12-09 06:09:15,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:09:15,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:09:15,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:09:15,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:09:15,401 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:09:15,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2020-12-09 06:09:15,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/data/77f096bb5/d7570af6c2f044d89a3405f77c2e7990/FLAG34529069e [2020-12-09 06:09:15,799 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:09:15,799 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2020-12-09 06:09:15,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/data/77f096bb5/d7570af6c2f044d89a3405f77c2e7990/FLAG34529069e [2020-12-09 06:09:15,813 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/data/77f096bb5/d7570af6c2f044d89a3405f77c2e7990 [2020-12-09 06:09:15,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:09:15,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:09:15,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:09:15,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:09:15,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:09:15,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9d57b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15, skipping insertion in model container [2020-12-09 06:09:15,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:09:15,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:09:15,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:09:15,940 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:09:15,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:09:15,959 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:09:15,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15 WrapperNode [2020-12-09 06:09:15,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:09:15,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:09:15,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:09:15,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:09:15,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:09:15,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:09:15,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:09:15,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:09:15,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... [2020-12-09 06:09:15,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:09:15,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:09:15,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:09:15,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:09:15,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/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 [2020-12-09 06:09:16,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:09:16,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:09:16,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:09:16,191 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 06:09:16,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:09:16 BoogieIcfgContainer [2020-12-09 06:09:16,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:09:16,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:09:16,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:09:16,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:09:16,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:09:15" (1/3) ... [2020-12-09 06:09:16,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498692a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:09:16, skipping insertion in model container [2020-12-09 06:09:16,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:15" (2/3) ... [2020-12-09 06:09:16,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498692a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:09:16, skipping insertion in model container [2020-12-09 06:09:16,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:09:16" (3/3) ... [2020-12-09 06:09:16,201 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2020-12-09 06:09:16,211 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:09:16,213 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 06:09:16,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 06:09:16,238 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:09:16,239 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:09:16,239 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:09:16,239 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:09:16,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:09:16,239 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:09:16,239 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:09:16,239 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:09:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-09 06:09:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 06:09:16,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:16,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 06:09:16,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:09:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-12-09 06:09:16,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:16,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090620656] [2020-12-09 06:09:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:16,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090620656] [2020-12-09 06:09:16,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:16,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:09:16,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611563804] [2020-12-09 06:09:16,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:09:16,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:16,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:09:16,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:16,383 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-12-09 06:09:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:16,413 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-12-09 06:09:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:09:16,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 06:09:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:16,421 INFO L225 Difference]: With dead ends: 22 [2020-12-09 06:09:16,421 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 06:09:16,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:16,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 06:09:16,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2020-12-09 06:09:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 06:09:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-12-09 06:09:16,447 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 4 [2020-12-09 06:09:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:16,448 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-12-09 06:09:16,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:09:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-09 06:09:16,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 06:09:16,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:16,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 06:09:16,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:09:16,449 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:09:16,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:16,449 INFO L82 PathProgramCache]: Analyzing trace with hash 964251, now seen corresponding path program 1 times [2020-12-09 06:09:16,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:16,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65956622] [2020-12-09 06:09:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:16,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65956622] [2020-12-09 06:09:16,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:16,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:09:16,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97760005] [2020-12-09 06:09:16,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:09:16,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:16,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:09:16,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:16,471 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-12-09 06:09:16,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:16,485 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-12-09 06:09:16,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:09:16,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 06:09:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:16,486 INFO L225 Difference]: With dead ends: 13 [2020-12-09 06:09:16,487 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 06:09:16,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 06:09:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 06:09:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 06:09:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-09 06:09:16,491 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2020-12-09 06:09:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:16,491 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-09 06:09:16,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:09:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-09 06:09:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:09:16,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:16,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:09:16,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:09:16,492 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:09:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-12-09 06:09:16,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:16,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887057293] [2020-12-09 06:09:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:16,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887057293] [2020-12-09 06:09:16,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:16,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:09:16,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843997349] [2020-12-09 06:09:16,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:09:16,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:16,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:09:16,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:16,518 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-12-09 06:09:16,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:16,532 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-12-09 06:09:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:09:16,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 06:09:16,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:16,534 INFO L225 Difference]: With dead ends: 13 [2020-12-09 06:09:16,534 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 06:09:16,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:16,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 06:09:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-12-09 06:09:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 06:09:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-12-09 06:09:16,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2020-12-09 06:09:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:16,538 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-12-09 06:09:16,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:09:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-12-09 06:09:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:09:16,539 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:16,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:09:16,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:09:16,539 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:09:16,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:16,540 INFO L82 PathProgramCache]: Analyzing trace with hash 29891841, now seen corresponding path program 1 times [2020-12-09 06:09:16,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:16,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149000382] [2020-12-09 06:09:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:16,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149000382] [2020-12-09 06:09:16,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:16,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:09:16,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688907049] [2020-12-09 06:09:16,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:09:16,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:16,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:09:16,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:16,564 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2020-12-09 06:09:16,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:16,574 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-12-09 06:09:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:09:16,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 06:09:16,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:16,574 INFO L225 Difference]: With dead ends: 11 [2020-12-09 06:09:16,575 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 06:09:16,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:16,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 06:09:16,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 06:09:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 06:09:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-12-09 06:09:16,577 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2020-12-09 06:09:16,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:16,577 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-12-09 06:09:16,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:09:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-12-09 06:09:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:09:16,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:16,578 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-09 06:09:16,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:09:16,578 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:09:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:16,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2020-12-09 06:09:16,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:16,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452243781] [2020-12-09 06:09:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:16,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452243781] [2020-12-09 06:09:16,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440098045] [2020-12-09 06:09:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/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 [2020-12-09 06:09:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:16,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:09:16,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:09:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:16,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:09:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:16,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1426895332] [2020-12-09 06:09:16,701 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 06:09:16,701 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:09:16,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:09:16,708 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:09:16,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:09:16,829 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:09:16,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:09:16,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:09:16,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2020-12-09 06:09:16,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048609906] [2020-12-09 06:09:16,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:09:16,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:16,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:09:16,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:09:16,907 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 6 states. [2020-12-09 06:09:16,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:16,948 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-12-09 06:09:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:09:16,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-09 06:09:16,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:16,951 INFO L225 Difference]: With dead ends: 32 [2020-12-09 06:09:16,951 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 06:09:16,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:09:16,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 06:09:16,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2020-12-09 06:09:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 06:09:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-12-09 06:09:16,956 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 7 [2020-12-09 06:09:16,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:16,956 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-12-09 06:09:16,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:09:16,956 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-12-09 06:09:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 06:09:16,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:16,956 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2020-12-09 06:09:17,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:09:17,159 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 06:09:17,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:17,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1477250187, now seen corresponding path program 2 times [2020-12-09 06:09:17,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:17,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041634534] [2020-12-09 06:09:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-09 06:09:17,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041634534] [2020-12-09 06:09:17,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737648517] [2020-12-09 06:09:17,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:09:17,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 06:09:17,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 06:09:17,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 06:09:17,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:09:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-09 06:09:17,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:09:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-09 06:09:17,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877044325] [2020-12-09 06:09:17,494 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 06:09:17,494 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:09:17,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:09:17,495 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:09:17,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:09:17,546 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:09:17,612 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:09:17,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:09:17,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2020-12-09 06:09:17,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050340508] [2020-12-09 06:09:17,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:09:17,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:17,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:09:17,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:09:17,614 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 4 states. [2020-12-09 06:09:17,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:17,634 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-12-09 06:09:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:09:17,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 06:09:17,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:17,635 INFO L225 Difference]: With dead ends: 22 [2020-12-09 06:09:17,635 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:09:17,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:09:17,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:09:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:09:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:09:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:09:17,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 06:09:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:17,636 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:09:17,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:09:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:09:17,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:09:17,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-09 06:09:17,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:09:17,913 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 06:09:17,913 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:09:17,914 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-09 06:09:17,914 INFO L258 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~x~0)) [2020-12-09 06:09:17,915 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2020-12-09 06:09:17,915 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-12-09 06:09:17,915 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 06:09:17,916 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-09 06:09:17,916 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:09:17,916 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-09 06:09:17,916 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-09 06:09:17,917 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-12-09 06:09:17,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:09:17 BoogieIcfgContainer [2020-12-09 06:09:17,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:09:17,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:09:17,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:09:17,955 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:09:17,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:09:16" (3/4) ... [2020-12-09 06:09:17,964 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:09:17,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 06:09:17,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 06:09:17,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:09:18,024 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9b3cad7b-9cd5-4805-98ee-ad3788754d58/bin/utaipan/witness.graphml [2020-12-09 06:09:18,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:09:18,026 INFO L168 Benchmark]: Toolchain (without parser) took 2209.17 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 56.6 MB in the beginning and 91.5 MB in the end (delta: -35.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:09:18,026 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:09:18,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.13 ms. Allocated memory is still 96.5 MB. Free memory was 56.4 MB in the beginning and 72.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:18,027 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.53 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:09:18,028 INFO L168 Benchmark]: Boogie Preprocessor took 12.86 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 69.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:18,028 INFO L168 Benchmark]: RCFGBuilder took 198.63 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 70.5 MB in the end (delta: -796.6 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:18,029 INFO L168 Benchmark]: TraceAbstraction took 1758.59 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 70.1 MB in the beginning and 93.6 MB in the end (delta: -23.5 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:18,029 INFO L168 Benchmark]: Witness Printer took 69.93 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 91.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:18,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 142.13 ms. Allocated memory is still 96.5 MB. Free memory was 56.4 MB in the beginning and 72.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 20.53 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.86 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 69.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 198.63 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 70.5 MB in the end (delta: -796.6 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1758.59 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 70.1 MB in the beginning and 93.6 MB in the end (delta: -23.5 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. * Witness Printer took 69.93 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 91.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= y && x <= 2147483647) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 50 SDslu, 13 SDs, 0 SdLazy, 67 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 207 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 64 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 2441 SizeOfPredicates, 2 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 66/84 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...