./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.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_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/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 c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 .......................................................................................................................................................................................................................................................................................................... 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_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/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 c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:54:52,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:54:52,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:54:52,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:54:52,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:54:52,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:54:52,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:54:52,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:54:52,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:54:52,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:54:52,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:54:52,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:54:52,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:54:52,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:54:52,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:54:52,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:54:52,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:54:52,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:54:52,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:54:52,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:54:52,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:54:52,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:54:52,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:54:52,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:54:52,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:54:52,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:54:52,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:54:52,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:54:52,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:54:52,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:54:52,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:54:52,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:54:52,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:54:52,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:54:52,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:54:52,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:54:52,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:54:52,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:54:52,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:54:52,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:54:52,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:54:52,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:54:52,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:54:52,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:54:52,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:54:52,705 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:54:52,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:54:52,706 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:54:52,706 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:54:52,706 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:54:52,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:54:52,707 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:54:52,707 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:54:52,707 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:54:52,707 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:54:52,708 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:54:52,708 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:54:52,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:54:52,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:54:52,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:54:52,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:54:52,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:54:52,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:54:52,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:54:52,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:54:52,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:54:52,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:54:52,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:54:52,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:54:52,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:54:52,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:54:52,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:54:52,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:54:52,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:54:52,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:54:52,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:54:52,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:54:52,712 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:54:52,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:54:52,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:54:52,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:54:52,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:54:52,713 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_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-11-30 02:54:52,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:54:52,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:54:52,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:54:52,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:54:52,989 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:54:52,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-30 02:54:53,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data/2297383d2/440dc4dd394d4ce6b7d19e22a7099c4e/FLAGe834174c7 [2020-11-30 02:54:53,488 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:54:53,489 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-30 02:54:53,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data/2297383d2/440dc4dd394d4ce6b7d19e22a7099c4e/FLAGe834174c7 [2020-11-30 02:54:53,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data/2297383d2/440dc4dd394d4ce6b7d19e22a7099c4e [2020-11-30 02:54:53,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:54:53,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:54:53,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:54:53,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:54:53,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:54:53,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:54:53" (1/1) ... [2020-11-30 02:54:53,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6664695b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:53, skipping insertion in model container [2020-11-30 02:54:53,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:54:53" (1/1) ... [2020-11-30 02:54:53,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:54:53,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:54:54,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:54:54,128 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:54:54,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:54:54,168 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:54:54,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54 WrapperNode [2020-11-30 02:54:54,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:54:54,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:54:54,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:54:54,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:54:54,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... [2020-11-30 02:54:54,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... [2020-11-30 02:54:54,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:54:54,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:54:54,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:54:54,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:54:54,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... [2020-11-30 02:54:54,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... [2020-11-30 02:54:54,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... [2020-11-30 02:54:54,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... [2020-11-30 02:54:54,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... [2020-11-30 02:54:54,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... [2020-11-30 02:54:54,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... [2020-11-30 02:54:54,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:54:54,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:54:54,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:54:54,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:54:54,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/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 [2020-11-30 02:54:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:54:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:54:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 02:54:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:54:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:54:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:54:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:54:55,191 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:54:55,191 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 02:54:55,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:54:55 BoogieIcfgContainer [2020-11-30 02:54:55,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:54:55,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:54:55,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:54:55,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:54:55,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:54:53" (1/3) ... [2020-11-30 02:54:55,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b129736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:54:55, skipping insertion in model container [2020-11-30 02:54:55,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:54" (2/3) ... [2020-11-30 02:54:55,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b129736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:54:55, skipping insertion in model container [2020-11-30 02:54:55,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:54:55" (3/3) ... [2020-11-30 02:54:55,207 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-11-30 02:54:55,225 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:54:55,230 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:54:55,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:54:55,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:54:55,265 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:54:55,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:54:55,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:54:55,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:54:55,266 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:54:55,266 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:54:55,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:54:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 02:54:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:54:55,283 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:54:55,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:54:55,285 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:54:55,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:54:55,290 INFO L82 PathProgramCache]: Analyzing trace with hash 709760188, now seen corresponding path program 1 times [2020-11-30 02:54:55,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:54:55,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498155919] [2020-11-30 02:54:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:54:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:54:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:54:55,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498155919] [2020-11-30 02:54:55,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:54:55,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:54:55,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914665854] [2020-11-30 02:54:55,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:54:55,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:54:55,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:54:55,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:54:55,436 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 02:54:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:54:55,449 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-30 02:54:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:54:55,451 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 02:54:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:54:55,459 INFO L225 Difference]: With dead ends: 35 [2020-11-30 02:54:55,459 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:54:55,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:54:55,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:54:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:54:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:54:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-30 02:54:55,493 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-30 02:54:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:54:55,493 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-30 02:54:55,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:54:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-30 02:54:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:54:55,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:54:55,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:54:55,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:54:55,495 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:54:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:54:55,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1365755737, now seen corresponding path program 1 times [2020-11-30 02:54:55,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:54:55,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769149451] [2020-11-30 02:54:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:54:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:54:55,551 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:54:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:54:55,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:54:55,617 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:54:55,617 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:54:55,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:54:55,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:54:55 BoogieIcfgContainer [2020-11-30 02:54:55,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:54:55,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:54:55,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:54:55,643 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:54:55,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:54:55" (3/4) ... [2020-11-30 02:54:55,647 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:54:55,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:54:55,649 INFO L168 Benchmark]: Toolchain (without parser) took 1755.31 ms. Allocated memory is still 94.4 MB. Free memory was 61.8 MB in the beginning and 39.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:54:55,650 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 35.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:54:55,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.11 ms. Allocated memory is still 94.4 MB. Free memory was 61.6 MB in the beginning and 70.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:54:55,652 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.48 ms. Allocated memory is still 94.4 MB. Free memory was 70.9 MB in the beginning and 69.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:54:55,653 INFO L168 Benchmark]: Boogie Preprocessor took 58.70 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 67.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:54:55,653 INFO L168 Benchmark]: RCFGBuilder took 897.42 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 62.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:54:55,654 INFO L168 Benchmark]: TraceAbstraction took 447.18 ms. Allocated memory is still 94.4 MB. Free memory was 62.0 MB in the beginning and 39.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:54:55,655 INFO L168 Benchmark]: Witness Printer took 4.20 ms. Allocated memory is still 94.4 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:54:55,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 35.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.11 ms. Allocated memory is still 94.4 MB. Free memory was 61.6 MB in the beginning and 70.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.48 ms. Allocated memory is still 94.4 MB. Free memory was 70.9 MB in the beginning and 69.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.70 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 67.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 897.42 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 62.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 447.18 ms. Allocated memory is still 94.4 MB. Free memory was 62.0 MB in the beginning and 39.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.20 ms. Allocated memory is still 94.4 MB. Free memory is still 39.6 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 someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 76. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1232b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2020-11-30 02:54:58,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:54:58,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:54:58,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:54:58,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:54:58,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:54:58,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:54:58,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:54:58,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:54:58,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:54:58,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:54:58,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:54:58,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:54:58,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:54:58,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:54:58,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:54:58,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:54:58,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:54:58,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:54:58,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:54:58,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:54:58,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:54:58,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:54:58,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:54:58,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:54:58,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:54:58,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:54:58,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:54:58,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:54:58,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:54:58,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:54:58,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:54:58,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:54:58,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:54:58,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:54:58,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:54:58,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:54:58,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:54:58,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:54:58,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:54:58,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:54:58,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:54:58,194 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:54:58,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:54:58,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:54:58,196 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:54:58,196 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:54:58,196 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:54:58,196 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:54:58,197 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:54:58,197 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:54:58,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:54:58,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:54:58,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:54:58,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:54:58,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:54:58,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:54:58,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:54:58,199 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:54:58,200 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:54:58,200 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:54:58,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:54:58,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:54:58,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:54:58,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:54:58,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:54:58,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:54:58,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:54:58,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:54:58,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:54:58,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:54:58,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:54:58,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:54:58,203 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:54:58,203 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:54:58,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:54:58,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:54:58,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:54:58,204 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_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-11-30 02:54:58,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:54:58,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:54:58,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:54:58,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:54:58,658 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:54:58,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-30 02:54:58,742 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data/087357a6c/113a88f86e58444bb84cb91979be030f/FLAGe67d616f8 [2020-11-30 02:54:59,359 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:54:59,359 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-30 02:54:59,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data/087357a6c/113a88f86e58444bb84cb91979be030f/FLAGe67d616f8 [2020-11-30 02:54:59,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/data/087357a6c/113a88f86e58444bb84cb91979be030f [2020-11-30 02:54:59,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:54:59,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:54:59,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:54:59,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:54:59,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:54:59,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:54:59,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8860523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59, skipping insertion in model container [2020-11-30 02:54:59,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:54:59,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:54:59,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:54:59,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:54:59,946 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:54:59,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:54:59,994 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:54:59,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59 WrapperNode [2020-11-30 02:54:59,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:54:59,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:54:59,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:54:59,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:55:00,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:55:00,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:55:00,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:55:00,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:55:00,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:55:00,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:55:00,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:55:00,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:55:00,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:55:00,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:55:00,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:55:00,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:55:00,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... [2020-11-30 02:55:00,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:55:00,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:55:00,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:55:00,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:55:00,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/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 [2020-11-30 02:55:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 02:55:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:55:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:55:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:55:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:55:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:55:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:55:00,739 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:55:00,739 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 02:55:00,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:55:00 BoogieIcfgContainer [2020-11-30 02:55:00,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:55:00,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:55:00,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:55:00,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:55:00,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:54:59" (1/3) ... [2020-11-30 02:55:00,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1838c4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:55:00, skipping insertion in model container [2020-11-30 02:55:00,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:54:59" (2/3) ... [2020-11-30 02:55:00,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1838c4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:55:00, skipping insertion in model container [2020-11-30 02:55:00,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:55:00" (3/3) ... [2020-11-30 02:55:00,750 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-11-30 02:55:00,761 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:55:00,766 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:55:00,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:55:00,799 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:55:00,799 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:55:00,799 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:55:00,799 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:55:00,799 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:55:00,799 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:55:00,799 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:55:00,800 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:55:00,811 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 02:55:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:55:00,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:00,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:00,816 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:00,821 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-30 02:55:00,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:55:00,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136811878] [2020-11-30 02:55:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/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 [2020-11-30 02:55:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:00,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:55:00,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:55:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:00,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:55:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:00,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136811878] [2020-11-30 02:55:01,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:01,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:55:01,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290370776] [2020-11-30 02:55:01,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:55:01,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:55:01,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:55:01,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:55:01,021 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 02:55:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:01,040 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-30 02:55:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:55:01,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 02:55:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:01,050 INFO L225 Difference]: With dead ends: 63 [2020-11-30 02:55:01,051 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 02:55:01,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:55:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 02:55:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 02:55:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 02:55:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-30 02:55:01,096 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-30 02:55:01,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:01,096 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-30 02:55:01,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:55:01,096 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-30 02:55:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:55:01,097 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:01,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:01,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:55:01,311 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:01,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-30 02:55:01,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:55:01,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134949451] [2020-11-30 02:55:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 02:55:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:01,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:55:01,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:55:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:01,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:55:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:01,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134949451] [2020-11-30 02:55:01,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:01,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:55:01,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602413703] [2020-11-30 02:55:01,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:55:01,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:55:01,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:55:01,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:55:01,488 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-30 02:55:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:01,596 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-30 02:55:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:55:01,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 02:55:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:01,598 INFO L225 Difference]: With dead ends: 68 [2020-11-30 02:55:01,598 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 02:55:01,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:55:01,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 02:55:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-30 02:55:01,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 02:55:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 02:55:01,607 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-30 02:55:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:01,607 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 02:55:01,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:55:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 02:55:01,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:55:01,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:01,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:01,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:55:01,822 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:01,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:01,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-30 02:55:01,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:55:01,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252354457] [2020-11-30 02:55:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 02:55:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:01,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:55:01,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:55:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:02,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:55:02,059 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:55:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:02,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252354457] [2020-11-30 02:55:02,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:02,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:55:02,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912616172] [2020-11-30 02:55:02,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:55:02,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:55:02,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:55:02,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:55:02,124 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-11-30 02:55:02,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:02,297 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-30 02:55:02,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:55:02,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 02:55:02,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:02,299 INFO L225 Difference]: With dead ends: 52 [2020-11-30 02:55:02,299 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 02:55:02,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:55:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 02:55:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 02:55:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 02:55:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-11-30 02:55:02,304 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-11-30 02:55:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:02,304 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-11-30 02:55:02,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:55:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-11-30 02:55:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:55:02,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:02,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:02,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:55:02,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:02,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:02,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-30 02:55:02,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:55:02,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267924176] [2020-11-30 02:55:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:55:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:02,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:55:02,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:55:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:02,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:55:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:02,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267924176] [2020-11-30 02:55:02,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:02,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:55:02,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471734636] [2020-11-30 02:55:02,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:55:02,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:55:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:55:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:55:02,696 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-11-30 02:55:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:02,839 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-11-30 02:55:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:55:02,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 02:55:02,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:02,841 INFO L225 Difference]: With dead ends: 65 [2020-11-30 02:55:02,841 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 02:55:02,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:55:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 02:55:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-11-30 02:55:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 02:55:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-11-30 02:55:02,851 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-11-30 02:55:02,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:02,852 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-11-30 02:55:02,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:55:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-11-30 02:55:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:55:02,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:02,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:03,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:55:03,067 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:03,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-30 02:55:03,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:55:03,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829371616] [2020-11-30 02:55:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 02:55:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:03,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:55:03,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:55:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:03,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:55:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:03,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829371616] [2020-11-30 02:55:03,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:03,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:55:03,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28501645] [2020-11-30 02:55:03,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:55:03,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:55:03,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:55:03,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:55:03,279 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-11-30 02:55:03,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:03,299 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-11-30 02:55:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:55:03,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 02:55:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:03,302 INFO L225 Difference]: With dead ends: 40 [2020-11-30 02:55:03,303 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 02:55:03,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:55:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 02:55:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 02:55:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 02:55:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-11-30 02:55:03,308 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-11-30 02:55:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:03,308 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-11-30 02:55:03,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:55:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-11-30 02:55:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:55:03,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:03,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:03,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 02:55:03,521 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:03,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:03,521 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-30 02:55:03,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:55:03,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931368452] [2020-11-30 02:55:03,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 02:55:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:03,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:55:03,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:55:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:03,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:55:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:03,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931368452] [2020-11-30 02:55:03,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:03,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-30 02:55:03,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964668774] [2020-11-30 02:55:03,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:55:03,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:55:03,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:55:03,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:55:03,756 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-11-30 02:55:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:03,890 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-11-30 02:55:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:55:03,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 02:55:03,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:03,891 INFO L225 Difference]: With dead ends: 42 [2020-11-30 02:55:03,891 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 02:55:03,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:55:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 02:55:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-11-30 02:55:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 02:55:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-11-30 02:55:03,897 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-11-30 02:55:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:03,898 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-11-30 02:55:03,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:55:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-11-30 02:55:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 02:55:03,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:03,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:04,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 02:55:04,106 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-30 02:55:04,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:55:04,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255774010] [2020-11-30 02:55:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 02:55:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:04,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:55:04,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:55:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:04,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:55:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:04,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255774010] [2020-11-30 02:55:04,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:04,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 02:55:04,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82903927] [2020-11-30 02:55:04,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:55:04,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:55:04,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:55:04,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:55:04,373 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-11-30 02:55:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:04,518 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-11-30 02:55:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:55:04,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-30 02:55:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:04,522 INFO L225 Difference]: With dead ends: 45 [2020-11-30 02:55:04,522 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 02:55:04,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:55:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 02:55:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 02:55:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:55:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-30 02:55:04,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-11-30 02:55:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:04,533 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-30 02:55:04,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:55:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-30 02:55:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 02:55:04,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:04,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:04,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 02:55:04,750 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:04,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:04,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-30 02:55:04,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:55:04,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579400039] [2020-11-30 02:55:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 02:55:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:55:05,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:55:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:55:05,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:55:05,361 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 02:55:05,361 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:55:05,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 02:55:05,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:55:05 BoogieIcfgContainer [2020-11-30 02:55:05,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:55:05,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:55:05,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:55:05,609 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:55:05,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:55:00" (3/4) ... [2020-11-30 02:55:05,611 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:55:05,679 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_db047f2e-5dcf-4cbf-a2da-45ceb1df01c0/bin/utaipan/witness.graphml [2020-11-30 02:55:05,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:55:05,682 INFO L168 Benchmark]: Toolchain (without parser) took 5944.62 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 34.9 MB in the beginning and 80.2 MB in the end (delta: -45.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:55:05,683 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:55:05,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.11 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 23.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:55:05,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.21 ms. Allocated memory is still 56.6 MB. Free memory was 23.5 MB in the beginning and 39.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:55:05,685 INFO L168 Benchmark]: Boogie Preprocessor took 34.26 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 37.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:55:05,685 INFO L168 Benchmark]: RCFGBuilder took 623.15 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 37.6 MB in the beginning and 60.8 MB in the end (delta: -23.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:55:05,686 INFO L168 Benchmark]: TraceAbstraction took 4865.08 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 60.2 MB in the beginning and 27.9 MB in the end (delta: 32.3 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:55:05,687 INFO L168 Benchmark]: Witness Printer took 71.21 ms. Allocated memory is still 100.7 MB. Free memory was 27.9 MB in the beginning and 80.2 MB in the end (delta: -52.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:55:05,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.11 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 23.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.21 ms. Allocated memory is still 56.6 MB. Free memory was 23.5 MB in the beginning and 39.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.26 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 37.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 623.15 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 37.6 MB in the beginning and 60.8 MB in the end (delta: -23.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4865.08 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 60.2 MB in the beginning and 27.9 MB in the end (delta: 32.3 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. * Witness Printer took 71.21 ms. Allocated memory is still 100.7 MB. Free memory was 27.9 MB in the beginning and 80.2 MB in the end (delta: -52.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L48] COND FALSE !(__fpclassify_double(x) == 0) [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L50] COND FALSE !(__fpclassify_double(y) == 0) [L53] EXPR x < y ? x : y [L53] return x < y ? x : y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L57] __uint32_t msw; [L60] ieee_double_shape_type gh_u; [L61] gh_u.value = (x) [L62] EXPR gh_u.parts.msw [L62] (msw) = gh_u.parts.msw [L65] return (msw & 0x80000000) != 0; [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1232b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 257 SDslu, 359 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 10714 SizeOfPredicates, 27 NumberOfNonLiveVariables, 463 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 incorrect! Received shutdown request...