./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound2.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_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/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 40d3dae4aed31dfbf762bbd7fd9b566dada020a0 .......................................................................................................................................................................................................................................................................................................................................................................... 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 07:38:50,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:50,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:50,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:50,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:50,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:50,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:50,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:50,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:50,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:50,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:50,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:50,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:50,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:50,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:50,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:50,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:50,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:50,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:50,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:50,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:50,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:50,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:50,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:50,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:50,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:50,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:50,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:50,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:50,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:50,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:50,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:50,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:50,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:50,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:50,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:50,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:50,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:50,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:50,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:50,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:50,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:38:51,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:51,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:51,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:51,018 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:51,018 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:51,018 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:51,019 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:51,019 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:51,019 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:51,019 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:51,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:51,021 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:51,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:51,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:51,021 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:51,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:51,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:51,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:51,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:51,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:51,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:51,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:51,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:51,024 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:51,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:51,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:51,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:51,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:51,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:51,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:51,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:51,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:51,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:51,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:51,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:51,027 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:51,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:51,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:51,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:51,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:51,028 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_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40d3dae4aed31dfbf762bbd7fd9b566dada020a0 [2020-11-28 07:38:51,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:51,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:51,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:51,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:51,391 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:51,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound2.c [2020-11-28 07:38:51,476 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/data/0c522e2f1/6324a5aab4ea43dc9d614059ede6be07/FLAG06b5cacbd [2020-11-28 07:38:51,891 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:51,891 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound2.c [2020-11-28 07:38:51,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/data/0c522e2f1/6324a5aab4ea43dc9d614059ede6be07/FLAG06b5cacbd [2020-11-28 07:38:52,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/data/0c522e2f1/6324a5aab4ea43dc9d614059ede6be07 [2020-11-28 07:38:52,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:52,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:52,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:52,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:52,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:52,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6103ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52, skipping insertion in model container [2020-11-28 07:38:52,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:52,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:52,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:52,569 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:52,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:52,600 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:52,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52 WrapperNode [2020-11-28 07:38:52,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:52,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:52,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:52,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:52,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:52,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:52,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:52,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:52,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:52,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:52,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:52,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:52,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/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 07:38:52,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:38:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:52,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:53,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:53,175 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-11-28 07:38:53,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:53 BoogieIcfgContainer [2020-11-28 07:38:53,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:53,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:53,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:53,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:53,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:52" (1/3) ... [2020-11-28 07:38:53,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46549686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:53, skipping insertion in model container [2020-11-28 07:38:53,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52" (2/3) ... [2020-11-28 07:38:53,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46549686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:53, skipping insertion in model container [2020-11-28 07:38:53,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:53" (3/3) ... [2020-11-28 07:38:53,194 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound2.c [2020-11-28 07:38:53,205 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:53,208 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:38:53,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:38:53,247 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:53,247 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:53,247 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:53,247 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:53,247 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:53,248 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:53,248 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:53,248 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-28 07:38:53,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:38:53,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:53,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:38:53,262 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:53,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2699162, now seen corresponding path program 1 times [2020-11-28 07:38:53,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:53,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265898801] [2020-11-28 07:38:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:53,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:38:53,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599636127] [2020-11-28 07:38:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/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 07:38:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:53,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:38:53,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:53,587 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 07:38:53,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:53,610 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:38:53,673 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 07:38:53,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265898801] [2020-11-28 07:38:53,674 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:38:53,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599636127] [2020-11-28 07:38:53,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:53,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:38:53,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987040605] [2020-11-28 07:38:53,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:38:53,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:53,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:38:53,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:53,703 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2020-11-28 07:38:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:56,196 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-11-28 07:38:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:38:56,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-28 07:38:56,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:56,206 INFO L225 Difference]: With dead ends: 38 [2020-11-28 07:38:56,207 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:38:56,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:38:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:38:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-28 07:38:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:38:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 07:38:56,242 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2020-11-28 07:38:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:56,242 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 07:38:56,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:38:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 07:38:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:38:56,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:56,243 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-11-28 07:38:56,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 07:38:56,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:56,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:56,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1782095290, now seen corresponding path program 1 times [2020-11-28 07:38:56,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:56,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471660993] [2020-11-28 07:38:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:56,482 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:38:56,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673819791] [2020-11-28 07:38:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/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 [2020-11-28 07:38:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:56,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-28 07:38:56,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:56,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:56,799 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:38:56,937 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:38:56,937 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:38:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:38:56,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471660993] [2020-11-28 07:38:56,948 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:38:56,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673819791] [2020-11-28 07:38:56,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1508684964] [2020-11-28 07:38:56,978 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-28 07:38:56,978 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:38:56,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:38:56,987 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:38:56,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:38:57,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:38:57,136 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:38:57,736 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:38:58,695 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2020-11-28 07:38:59,420 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2020-11-28 07:39:00,576 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 129 DAG size of output: 104 [2020-11-28 07:39:00,731 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-11-28 07:39:00,733 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:39:00,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:39:00,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-11-28 07:39:00,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118394523] [2020-11-28 07:39:00,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:39:00,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:00,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:39:00,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:39:00,736 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-11-28 07:39:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:03,116 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-28 07:39:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:39:03,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-11-28 07:39:03,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:03,117 INFO L225 Difference]: With dead ends: 21 [2020-11-28 07:39:03,117 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:39:03,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-11-28 07:39:03,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:39:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:39:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:39:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:39:03,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 07:39:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:03,120 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:39:03,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:39:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:39:03,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:39:03,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:39:03,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:39:03,663 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2020-11-28 07:39:03,762 INFO L270 CegarLoopResult]: At program point L27-2(lines 27 36) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 6) (+ (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 2) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 3) ULTIMATE.start_main_~y~0)))) [2020-11-28 07:39:03,763 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:39:03,763 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2020-11-28 07:39:03,763 INFO L274 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-11-28 07:39:03,763 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-11-28 07:39:03,763 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:39:03,763 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:39:03,763 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:39:03,764 INFO L274 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-11-28 07:39:03,764 INFO L270 CegarLoopResult]: At program point L10-1(lines 30 31) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 6) (+ (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 2) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 3) ULTIMATE.start_main_~y~0))) [2020-11-28 07:39:03,764 INFO L274 CegarLoopResult]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2020-11-28 07:39:03,764 INFO L277 CegarLoopResult]: At program point L10-3(lines 9 15) the Hoare annotation is: true [2020-11-28 07:39:03,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:39:03 BoogieIcfgContainer [2020-11-28 07:39:03,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:39:03,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:39:03,780 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:39:03,780 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:39:03,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:53" (3/4) ... [2020-11-28 07:39:03,783 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:39:03,791 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:39:03,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:39:03,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:39:03,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:39:03,825 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_088eaf24-ed7d-4ea2-b161-d341cfe96f7b/bin/utaipan/witness.graphml [2020-11-28 07:39:03,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:39:03,827 INFO L168 Benchmark]: Toolchain (without parser) took 11538.30 ms. Allocated memory was 132.1 MB in the beginning and 192.9 MB in the end (delta: 60.8 MB). Free memory was 101.3 MB in the beginning and 135.9 MB in the end (delta: -34.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,827 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:03,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.64 ms. Allocated memory is still 132.1 MB. Free memory was 101.0 MB in the beginning and 107.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 132.1 MB. Free memory was 106.9 MB in the beginning and 105.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,836 INFO L168 Benchmark]: Boogie Preprocessor took 19.83 ms. Allocated memory is still 132.1 MB. Free memory was 105.6 MB in the beginning and 104.8 MB in the end (delta: 811.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:03,837 INFO L168 Benchmark]: RCFGBuilder took 522.91 ms. Allocated memory is still 132.1 MB. Free memory was 104.4 MB in the beginning and 88.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,840 INFO L168 Benchmark]: TraceAbstraction took 10600.39 ms. Allocated memory was 132.1 MB in the beginning and 192.9 MB in the end (delta: 60.8 MB). Free memory was 88.0 MB in the beginning and 138.0 MB in the end (delta: -50.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,840 INFO L168 Benchmark]: Witness Printer took 46.00 ms. Allocated memory is still 192.9 MB. Free memory was 138.0 MB in the beginning and 135.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.64 ms. Allocated memory is still 132.1 MB. Free memory was 101.0 MB in the beginning and 107.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 132.1 MB. Free memory was 106.9 MB in the beginning and 105.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.83 ms. Allocated memory is still 132.1 MB. Free memory was 105.6 MB in the beginning and 104.8 MB in the end (delta: 811.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 522.91 ms. Allocated memory is still 132.1 MB. Free memory was 104.4 MB in the beginning and 88.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10600.39 ms. Allocated memory was 132.1 MB in the beginning and 192.9 MB in the end (delta: 60.8 MB). Free memory was 88.0 MB in the beginning and 138.0 MB in the end (delta: -50.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 46.00 ms. Allocated memory is still 192.9 MB. Free memory was 138.0 MB in the beginning and 135.9 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= cond && x * 6 == y * y * y * 2 + y * y * 3 + y - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (x == 0 && y == 0) || (1 <= cond && x * 6 == y * y * y * 2 + y * y * 3 + y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 2, TraceHistogramMax: 3, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 34 SDslu, 24 SDs, 0 SdLazy, 55 SolverSat, 30 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=1, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 51 HoareAnnotationTreeSize, 3 FomulaSimplifications, 61 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1257 SizeOfPredicates, 13 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...