./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float12.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_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/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 748862a4a10e7eb5031b0856b76be837613208b8 ................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/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 748862a4a10e7eb5031b0856b76be837613208b8 .................................................................................................................................................................................................................................................................................... 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 07:43:25,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:25,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:25,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:25,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:25,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:25,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:25,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:25,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:25,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:25,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:25,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:25,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:25,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:25,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:25,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:25,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:25,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:25,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:25,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:25,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:25,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:25,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:25,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:25,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:25,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:25,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:25,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:25,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:25,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:25,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:25,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:25,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:25,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:25,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:25,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:25,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:25,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:25,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:25,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:25,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:25,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:43:25,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:25,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:25,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:25,701 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:25,701 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:25,701 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:25,702 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:43:25,702 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:25,702 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:25,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:43:25,704 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:43:25,704 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:25,704 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:43:25,705 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:43:25,705 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:43:25,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:25,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:25,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:43:25,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:25,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:25,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:25,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:25,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:25,708 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:25,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:25,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:25,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:25,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:25,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:25,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:25,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:25,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:25,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:25,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:25,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:25,711 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:43:25,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:43:25,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:25,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:25,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:25,712 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_d6584e99-eb37-42fc-b626-47274fc1f739/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 748862a4a10e7eb5031b0856b76be837613208b8 [2020-11-28 07:43:26,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:26,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:26,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:26,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:26,069 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:26,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2020-11-28 07:43:26,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data/def94fa7e/3fcc6571c30a4b40a3731c853ee63278/FLAG68480fce4 [2020-11-28 07:43:26,603 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:26,603 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/sv-benchmarks/c/floats-cbmc-regression/float12.c [2020-11-28 07:43:26,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data/def94fa7e/3fcc6571c30a4b40a3731c853ee63278/FLAG68480fce4 [2020-11-28 07:43:27,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data/def94fa7e/3fcc6571c30a4b40a3731c853ee63278 [2020-11-28 07:43:27,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:27,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:27,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:27,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:27,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:27,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e521db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27, skipping insertion in model container [2020-11-28 07:43:27,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:27,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:27,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:27,223 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:27,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:27,250 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:27,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27 WrapperNode [2020-11-28 07:43:27,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:27,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:27,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:27,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:27,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:27,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:27,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:27,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:27,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:27,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:27,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:27,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:27,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/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 07:43:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:43:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:27,661 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:27,662 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:43:27,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:27 BoogieIcfgContainer [2020-11-28 07:43:27,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:27,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:27,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:27,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:27,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:27" (1/3) ... [2020-11-28 07:43:27,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39671716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:27, skipping insertion in model container [2020-11-28 07:43:27,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (2/3) ... [2020-11-28 07:43:27,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39671716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:27, skipping insertion in model container [2020-11-28 07:43:27,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:27" (3/3) ... [2020-11-28 07:43:27,679 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2020-11-28 07:43:27,701 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:27,712 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:43:27,737 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:43:27,762 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:27,762 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:27,762 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:27,762 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:27,762 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:27,762 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:27,763 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:27,763 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-11-28 07:43:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:43:27,781 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:27,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:43:27,782 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:27,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1554194, now seen corresponding path program 1 times [2020-11-28 07:43:27,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:27,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999207292] [2020-11-28 07:43:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:27,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:27,917 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:27,938 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:43:27,938 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:43:27,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:43:27,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:27 BoogieIcfgContainer [2020-11-28 07:43:27,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:27,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:27,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:27,961 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:27,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:27" (3/4) ... [2020-11-28 07:43:27,966 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:43:27,966 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:27,968 INFO L168 Benchmark]: Toolchain (without parser) took 962.54 ms. Allocated memory is still 109.1 MB. Free memory was 76.9 MB in the beginning and 60.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:27,969 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 49.9 MB in the beginning and 49.9 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:27,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.50 ms. Allocated memory is still 109.1 MB. Free memory was 76.9 MB in the beginning and 86.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:27,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.44 ms. Allocated memory is still 109.1 MB. Free memory was 86.5 MB in the beginning and 85.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:27,972 INFO L168 Benchmark]: Boogie Preprocessor took 18.74 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.4 MB in the end (delta: 936.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:27,973 INFO L168 Benchmark]: RCFGBuilder took 361.27 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 72.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:27,974 INFO L168 Benchmark]: TraceAbstraction took 294.45 ms. Allocated memory is still 109.1 MB. Free memory was 71.9 MB in the beginning and 60.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:27,974 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 109.1 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:27,978 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 49.9 MB in the beginning and 49.9 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.50 ms. Allocated memory is still 109.1 MB. Free memory was 76.9 MB in the beginning and 86.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.44 ms. Allocated memory is still 109.1 MB. Free memory was 86.5 MB in the beginning and 85.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.74 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.4 MB in the end (delta: 936.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 361.27 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 72.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 294.45 ms. Allocated memory is still 109.1 MB. Free memory was 71.9 MB in the beginning and 60.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 109.1 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L8] float f = __VERIFIER_nondet_float(); [L9] double d; [L10] unsigned char x = __VERIFIER_nondet_uchar(); [L12] d=f [L14] COND TRUE f==x [L15] COND TRUE !(d==x) [L3] __assert_fail("0", "float12.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:43:30,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:30,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:30,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:30,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:30,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:30,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:30,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:30,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:30,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:30,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:30,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:30,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:30,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:30,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:30,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:30,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:30,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:30,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:30,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:30,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:30,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:30,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:30,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:30,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:30,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:30,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:30,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:30,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:30,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:30,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:30,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:30,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:30,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:30,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:30,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:30,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:30,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:30,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:30,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:30,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:30,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:43:30,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:30,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:30,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:30,757 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:30,758 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:30,758 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:30,758 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:30,759 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:30,759 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:30,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:30,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:30,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:30,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:30,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:30,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:30,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:30,764 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:30,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:43:30,764 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:43:30,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:30,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:30,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:30,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:30,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:30,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:43:30,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:30,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:30,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:30,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:30,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:30,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:30,769 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:43:30,769 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:43:30,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:30,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:30,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:30,770 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_d6584e99-eb37-42fc-b626-47274fc1f739/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 748862a4a10e7eb5031b0856b76be837613208b8 [2020-11-28 07:43:31,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:31,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:31,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:31,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:31,224 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:31,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2020-11-28 07:43:31,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data/2d03ffa47/54fb31870e764fe596a2cebaacb899ac/FLAGe19ed2458 [2020-11-28 07:43:31,808 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:31,809 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/sv-benchmarks/c/floats-cbmc-regression/float12.c [2020-11-28 07:43:31,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data/2d03ffa47/54fb31870e764fe596a2cebaacb899ac/FLAGe19ed2458 [2020-11-28 07:43:32,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/data/2d03ffa47/54fb31870e764fe596a2cebaacb899ac [2020-11-28 07:43:32,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:32,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:32,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:32,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:32,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:32,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2adf05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32, skipping insertion in model container [2020-11-28 07:43:32,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:32,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:32,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:32,453 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:32,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:32,496 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:32,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32 WrapperNode [2020-11-28 07:43:32,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:32,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:32,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:32,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:32,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:32,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:32,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:32,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:32,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... [2020-11-28 07:43:32,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:32,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:32,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:32,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:32,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/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 07:43:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:43:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:32,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:33,060 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:33,060 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:43:33,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:33 BoogieIcfgContainer [2020-11-28 07:43:33,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:33,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:33,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:33,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:33,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:32" (1/3) ... [2020-11-28 07:43:33,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611bf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:33, skipping insertion in model container [2020-11-28 07:43:33,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:32" (2/3) ... [2020-11-28 07:43:33,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611bf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:33, skipping insertion in model container [2020-11-28 07:43:33,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:33" (3/3) ... [2020-11-28 07:43:33,087 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2020-11-28 07:43:33,113 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:33,117 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:43:33,129 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:43:33,152 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:33,153 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:33,153 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:33,153 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:33,153 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:33,153 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:33,153 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:33,154 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:33,169 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:43:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:43:33,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:33,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:43:33,175 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:33,181 INFO L82 PathProgramCache]: Analyzing trace with hash 28693795, now seen corresponding path program 1 times [2020-11-28 07:43:33,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:33,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914135386] [2020-11-28 07:43:33,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:33,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:43:33,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:34,061 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-28 07:43:34,305 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 07:43:34,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:36,181 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 07:43:36,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914135386] [2020-11-28 07:43:36,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:36,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:43:36,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050352127] [2020-11-28 07:43:36,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:36,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:36,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:36,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:36,202 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 6 states. [2020-11-28 07:43:39,954 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2020-11-28 07:43:40,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:40,298 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-28 07:43:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:40,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-11-28 07:43:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:40,313 INFO L225 Difference]: With dead ends: 16 [2020-11-28 07:43:40,313 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:43:40,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:43:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:43:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:43:40,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:43:40,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-11-28 07:43:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:40,339 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:43:40,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:40,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:43:40,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:43:40,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:43:40,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:43:40,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:43:40,544 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:43:40,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:43:40,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:43:40,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:43:40,544 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-28 07:43:40,544 INFO L274 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2020-11-28 07:43:40,544 INFO L274 CegarLoopResult]: For program point L6(lines 6 16) no Hoare annotation was computed. [2020-11-28 07:43:40,544 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:43:40,545 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 07:43:40,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:40 BoogieIcfgContainer [2020-11-28 07:43:40,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:40,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:40,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:40,551 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:40,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:33" (3/4) ... [2020-11-28 07:43:40,555 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:43:40,567 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:43:40,567 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:43:40,568 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:43:40,568 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:43:40,603 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d6584e99-eb37-42fc-b626-47274fc1f739/bin/utaipan/witness.graphml [2020-11-28 07:43:40,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:40,605 INFO L168 Benchmark]: Toolchain (without parser) took 8382.84 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 32.0 MB in the beginning and 43.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:40,606 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 26.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:40,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.57 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 31.9 MB in the beginning and 56.9 MB in the end (delta: -25.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:40,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.54 ms. Allocated memory is still 77.6 MB. Free memory was 56.9 MB in the beginning and 55.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:40,608 INFO L168 Benchmark]: Boogie Preprocessor took 59.54 ms. Allocated memory is still 77.6 MB. Free memory was 55.4 MB in the beginning and 61.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:40,608 INFO L168 Benchmark]: RCFGBuilder took 459.64 ms. Allocated memory is still 77.6 MB. Free memory was 61.2 MB in the beginning and 50.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:40,609 INFO L168 Benchmark]: TraceAbstraction took 7485.00 ms. Allocated memory is still 77.6 MB. Free memory was 50.1 MB in the beginning and 46.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:40,612 INFO L168 Benchmark]: Witness Printer took 52.77 ms. Allocated memory is still 77.6 MB. Free memory was 46.0 MB in the beginning and 43.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:40,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 26.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.57 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 31.9 MB in the beginning and 56.9 MB in the end (delta: -25.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.54 ms. Allocated memory is still 77.6 MB. Free memory was 56.9 MB in the beginning and 55.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.54 ms. Allocated memory is still 77.6 MB. Free memory was 55.4 MB in the beginning and 61.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 459.64 ms. Allocated memory is still 77.6 MB. Free memory was 61.2 MB in the beginning and 50.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7485.00 ms. Allocated memory is still 77.6 MB. Free memory was 50.1 MB in the beginning and 46.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 52.77 ms. Allocated memory is still 77.6 MB. Free memory was 46.0 MB in the beginning and 43.9 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 8 SDslu, 2 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 2 QuantifiedInterpolants, 156 SizeOfPredicates, 6 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...