./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.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_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/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 a6231fe9945ed231781bef28be0893007c672b08 .......................................................................................................................................................................................................................................................................................................... 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_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/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 a6231fe9945ed231781bef28be0893007c672b08 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 [2020-11-28 07:40:06,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:06,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:06,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:06,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:06,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:06,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:06,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:06,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:06,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:06,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:06,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:06,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:06,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:06,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:06,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:06,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:06,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:06,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:06,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:06,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:06,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:06,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:06,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:06,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:06,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:06,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:06,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:06,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:06,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:06,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:06,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:06,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:06,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:06,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:06,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:06,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:06,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:06,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:06,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:06,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:06,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:06,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:06,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:06,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:06,941 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:06,941 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:06,941 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:06,941 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:06,942 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:06,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:06,942 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:06,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:06,943 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:06,944 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:06,944 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:06,944 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:06,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:06,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:06,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:06,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:06,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:06,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:06,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:06,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:06,947 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:06,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:06,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:06,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:06,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:06,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:06,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:06,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:06,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:06,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:06,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:06,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:06,951 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:06,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:06,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:06,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:06,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:06,952 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_d038be08-7583-468f-8aa6-3dd8b5298be2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6231fe9945ed231781bef28be0893007c672b08 [2020-11-28 07:40:07,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:07,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:07,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:07,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:07,328 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:07,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-11-28 07:40:07,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data/f3e545a94/e9acad80d2c045eaa83c41b619d1bbca/FLAG89f0889b3 [2020-11-28 07:40:07,894 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:07,894 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-11-28 07:40:07,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data/f3e545a94/e9acad80d2c045eaa83c41b619d1bbca/FLAG89f0889b3 [2020-11-28 07:40:08,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data/f3e545a94/e9acad80d2c045eaa83c41b619d1bbca [2020-11-28 07:40:08,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:08,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:08,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:08,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:08,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:08,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@406ae63b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08, skipping insertion in model container [2020-11-28 07:40:08,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:08,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:08,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:08,523 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:08,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:08,569 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:08,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08 WrapperNode [2020-11-28 07:40:08,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:08,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:08,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:08,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:08,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:08,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:08,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:08,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:08,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:08,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:08,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:08,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:08,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:40:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:40:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:40:09,627 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:09,627 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:40:09,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:09 BoogieIcfgContainer [2020-11-28 07:40:09,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:09,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:09,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:09,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:09,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:08" (1/3) ... [2020-11-28 07:40:09,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55589727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:09, skipping insertion in model container [2020-11-28 07:40:09,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (2/3) ... [2020-11-28 07:40:09,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55589727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:09, skipping insertion in model container [2020-11-28 07:40:09,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:09" (3/3) ... [2020-11-28 07:40:09,641 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-11-28 07:40:09,658 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:09,662 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:09,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:09,711 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:09,711 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:09,711 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:09,711 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:09,712 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:09,712 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:09,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:09,712 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-28 07:40:09,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:40:09,732 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:09,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:09,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:09,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:09,740 INFO L82 PathProgramCache]: Analyzing trace with hash 709760188, now seen corresponding path program 1 times [2020-11-28 07:40:09,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:09,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605440736] [2020-11-28 07:40:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:09,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605440736] [2020-11-28 07:40:09,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:09,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:09,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422049583] [2020-11-28 07:40:09,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:40:09,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:09,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:40:09,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:40:09,902 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-28 07:40:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:09,918 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-28 07:40:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:40:09,919 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:40:09,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:09,928 INFO L225 Difference]: With dead ends: 35 [2020-11-28 07:40:09,928 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:40:09,930 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 [2020-11-28 07:40:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:40:09,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:40:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:40:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-28 07:40:09,974 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-28 07:40:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:09,975 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-28 07:40:09,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:40:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-28 07:40:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:40:09,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:09,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:09,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:09,977 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:09,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1365755737, now seen corresponding path program 1 times [2020-11-28 07:40:09,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:09,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942743018] [2020-11-28 07:40:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:10,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:10,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:10,184 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:40:10,185 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:40:10,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:10,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:10 BoogieIcfgContainer [2020-11-28 07:40:10,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:10,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:10,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:10,221 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:10,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:09" (3/4) ... [2020-11-28 07:40:10,225 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:40:10,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:10,227 INFO L168 Benchmark]: Toolchain (without parser) took 1964.89 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 75.0 MB in the beginning and 65.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:10,228 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 62.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:10,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.17 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 78.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:10,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.65 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 76.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:10,230 INFO L168 Benchmark]: Boogie Preprocessor took 32.88 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 75.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:10,231 INFO L168 Benchmark]: RCFGBuilder took 979.16 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 75.1 MB in the beginning and 89.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:10,231 INFO L168 Benchmark]: TraceAbstraction took 587.63 ms. Allocated memory is still 123.7 MB. Free memory was 89.0 MB in the beginning and 65.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:10,232 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 123.7 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:10,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 62.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.17 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 78.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.65 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 76.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.88 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 75.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 979.16 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 75.1 MB in the beginning and 89.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 587.63 ms. Allocated memory is still 123.7 MB. Free memory was 89.0 MB in the beginning and 65.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.32 ms. Allocated memory is still 123.7 MB. Free memory is still 65.9 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 86, overapproximation of someUnaryDOUBLEoperation at line 82. Possible FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1252b.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: 0.4s, 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 [2020-11-28 07:40:12,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:12,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:12,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:12,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:12,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:12,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:12,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:12,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:12,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:12,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:12,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:12,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:12,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:12,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:12,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:12,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:12,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:12,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:12,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:12,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:12,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:12,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:12,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:12,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:12,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:12,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:12,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:12,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:12,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:12,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:12,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:12,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:12,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:12,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:12,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:12,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:12,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:12,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:12,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:12,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:12,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:40:12,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:12,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:12,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:12,992 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:12,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:12,992 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:12,993 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:12,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:12,993 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:12,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:12,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:12,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:12,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:12,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:12,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:12,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:12,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:12,998 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:40:12,998 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:40:12,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:12,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:12,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:12,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:12,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:12,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:40:13,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:13,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:13,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:13,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:13,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:13,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:13,001 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:40:13,001 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:40:13,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:13,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:13,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:13,003 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_d038be08-7583-468f-8aa6-3dd8b5298be2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6231fe9945ed231781bef28be0893007c672b08 [2020-11-28 07:40:13,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:13,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:13,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:13,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:13,425 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:13,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-11-28 07:40:13,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data/5ad6448a8/6c16080007ac4d718501c578467fbc77/FLAG5c3cab8a4 [2020-11-28 07:40:14,142 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:14,143 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-11-28 07:40:14,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data/5ad6448a8/6c16080007ac4d718501c578467fbc77/FLAG5c3cab8a4 [2020-11-28 07:40:14,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/data/5ad6448a8/6c16080007ac4d718501c578467fbc77 [2020-11-28 07:40:14,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:14,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:14,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:14,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:14,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:14,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b57dc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14, skipping insertion in model container [2020-11-28 07:40:14,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:14,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:14,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:14,709 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:14,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:14,756 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:14,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14 WrapperNode [2020-11-28 07:40:14,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:14,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:14,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:14,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:14,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:14,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:14,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:14,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:14,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:14,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:14,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:14,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:14,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 07:40:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:40:14,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:40:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:40:15,608 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:15,609 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:40:15,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:15 BoogieIcfgContainer [2020-11-28 07:40:15,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:15,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:15,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:15,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:15,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:14" (1/3) ... [2020-11-28 07:40:15,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2581e1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:15, skipping insertion in model container [2020-11-28 07:40:15,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (2/3) ... [2020-11-28 07:40:15,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2581e1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:15, skipping insertion in model container [2020-11-28 07:40:15,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:15" (3/3) ... [2020-11-28 07:40:15,617 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-11-28 07:40:15,628 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:15,631 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:15,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:15,666 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:15,666 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:15,666 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:15,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:15,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:15,667 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:15,667 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:15,667 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:15,678 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 07:40:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:40:15,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:15,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:15,683 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:15,689 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-28 07:40:15,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:15,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484222002] [2020-11-28 07:40:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:40:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:15,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:40:15,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:15,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:15,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484222002] [2020-11-28 07:40:15,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:15,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:40:15,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232118746] [2020-11-28 07:40:15,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:40:15,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:15,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:40:15,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:40:15,863 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-28 07:40:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:15,881 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-28 07:40:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:40:15,882 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:40:15,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:15,900 INFO L225 Difference]: With dead ends: 63 [2020-11-28 07:40:15,900 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 07:40:15,903 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 [2020-11-28 07:40:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 07:40:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 07:40:15,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 07:40:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-28 07:40:15,936 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-28 07:40:15,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:15,936 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-28 07:40:15,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:40:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-28 07:40:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:40:15,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:15,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:16,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:40:16,160 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:16,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:16,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-28 07:40:16,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:16,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321330619] [2020-11-28 07:40:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/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 [2020-11-28 07:40:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:16,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:40:16,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:16,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:16,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321330619] [2020-11-28 07:40:16,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:16,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:40:16,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328572957] [2020-11-28 07:40:16,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:16,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:16,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:16,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:16,316 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-28 07:40:16,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:16,451 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-28 07:40:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:40:16,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:40:16,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:16,455 INFO L225 Difference]: With dead ends: 68 [2020-11-28 07:40:16,456 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 07:40:16,457 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 [2020-11-28 07:40:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 07:40:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-28 07:40:16,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:40:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 07:40:16,471 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-28 07:40:16,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:16,474 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 07:40:16,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-28 07:40:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:40:16,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:16,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:16,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:40:16,691 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:16,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:16,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-28 07:40:16,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:16,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064584847] [2020-11-28 07:40:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/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 [2020-11-28 07:40:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:16,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:40:16,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:16,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:16,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064584847] [2020-11-28 07:40:16,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:16,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:40:16,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410898876] [2020-11-28 07:40:16,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:16,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:16,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:16,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:16,972 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-11-28 07:40:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:17,154 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-28 07:40:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:17,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 07:40:17,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:17,155 INFO L225 Difference]: With dead ends: 52 [2020-11-28 07:40:17,155 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 07:40:17,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:17,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 07:40:17,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-28 07:40:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 07:40:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-11-28 07:40:17,162 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-11-28 07:40:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:17,162 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-11-28 07:40:17,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-11-28 07:40:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:40:17,164 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:17,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:17,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:40:17,379 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:17,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-28 07:40:17,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:17,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164098379] [2020-11-28 07:40:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/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 [2020-11-28 07:40:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:17,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:40:17,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164098379] [2020-11-28 07:40:17,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:17,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:40:17,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673437786] [2020-11-28 07:40:17,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:17,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:17,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:17,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:17,579 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-11-28 07:40:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:17,699 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-11-28 07:40:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:40:17,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:40:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:17,702 INFO L225 Difference]: With dead ends: 65 [2020-11-28 07:40:17,702 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 07:40:17,703 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 [2020-11-28 07:40:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 07:40:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-11-28 07:40:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:40:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-11-28 07:40:17,714 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-11-28 07:40:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:17,714 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-11-28 07:40:17,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-11-28 07:40:17,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:40:17,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:17,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:17,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:40:17,934 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:17,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:17,935 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-28 07:40:17,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:17,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771458506] [2020-11-28 07:40:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/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 [2020-11-28 07:40:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:18,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:40:18,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:18,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:18,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771458506] [2020-11-28 07:40:18,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:18,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:40:18,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640792162] [2020-11-28 07:40:18,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:18,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:18,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:18,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:18,134 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-11-28 07:40:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:18,152 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-11-28 07:40:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:18,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 07:40:18,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:18,156 INFO L225 Difference]: With dead ends: 40 [2020-11-28 07:40:18,156 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 07:40:18,157 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 [2020-11-28 07:40:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 07:40:18,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 07:40:18,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:40:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-11-28 07:40:18,162 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-11-28 07:40:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:18,162 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-11-28 07:40:18,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-11-28 07:40:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:40:18,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:18,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:18,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:40:18,364 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:18,364 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-28 07:40:18,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:18,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137532930] [2020-11-28 07:40:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/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 [2020-11-28 07:40:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:18,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:40:18,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:18,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:18,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137532930] [2020-11-28 07:40:18,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:18,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-28 07:40:18,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767673518] [2020-11-28 07:40:18,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:40:18,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:18,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:40:18,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:40:18,645 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-11-28 07:40:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:18,806 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-11-28 07:40:18,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:18,807 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-28 07:40:18,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:18,807 INFO L225 Difference]: With dead ends: 42 [2020-11-28 07:40:18,807 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 07:40:18,809 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 [2020-11-28 07:40:18,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 07:40:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-11-28 07:40:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 07:40:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-11-28 07:40:18,813 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-11-28 07:40:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:18,814 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-11-28 07:40:18,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:40:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-11-28 07:40:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:40:18,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:18,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:19,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:40:19,018 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:19,019 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-28 07:40:19,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:19,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054803348] [2020-11-28 07:40:19,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/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 [2020-11-28 07:40:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:19,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:40:19,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:19,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:19,230 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:19,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054803348] [2020-11-28 07:40:19,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:19,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 07:40:19,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674855104] [2020-11-28 07:40:19,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:40:19,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:19,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:40:19,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:19,392 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-11-28 07:40:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:19,563 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-11-28 07:40:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:19,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-28 07:40:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:19,567 INFO L225 Difference]: With dead ends: 45 [2020-11-28 07:40:19,567 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 07:40:19,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:40:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 07:40:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 07:40:19,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 07:40:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-28 07:40:19,574 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-11-28 07:40:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:19,575 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-28 07:40:19,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:40:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-28 07:40:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:40:19,575 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:19,576 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] [2020-11-28 07:40:19,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 07:40:19,780 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:19,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:19,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-28 07:40:19,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:19,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993666276] [2020-11-28 07:40:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/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 [2020-11-28 07:40:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:20,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:20,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:20,362 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:40:20,362 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:40:20,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:40:20,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:20 BoogieIcfgContainer [2020-11-28 07:40:20,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:20,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:20,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:20,613 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:20,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:15" (3/4) ... [2020-11-28 07:40:20,623 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:40:20,680 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d038be08-7583-468f-8aa6-3dd8b5298be2/bin/utaipan/witness.graphml [2020-11-28 07:40:20,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:20,682 INFO L168 Benchmark]: Toolchain (without parser) took 6185.35 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 48.0 MB in the beginning and 29.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,683 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 35.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:20,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.37 ms. Allocated memory is still 71.3 MB. Free memory was 47.9 MB in the beginning and 36.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.67 ms. Allocated memory is still 71.3 MB. Free memory was 36.8 MB in the beginning and 54.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,684 INFO L168 Benchmark]: Boogie Preprocessor took 62.83 ms. Allocated memory is still 71.3 MB. Free memory was 54.0 MB in the beginning and 52.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:20,685 INFO L168 Benchmark]: RCFGBuilder took 716.56 ms. Allocated memory is still 71.3 MB. Free memory was 52.4 MB in the beginning and 50.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,686 INFO L168 Benchmark]: TraceAbstraction took 4996.90 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 49.9 MB in the beginning and 32.3 MB in the end (delta: 17.7 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,686 INFO L168 Benchmark]: Witness Printer took 71.31 ms. Allocated memory is still 88.1 MB. Free memory was 32.3 MB in the beginning and 29.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:20,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 35.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.37 ms. Allocated memory is still 71.3 MB. Free memory was 47.9 MB in the beginning and 36.8 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 71.67 ms. Allocated memory is still 71.3 MB. Free memory was 36.8 MB in the beginning and 54.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.83 ms. Allocated memory is still 71.3 MB. Free memory was 54.0 MB in the beginning and 52.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 716.56 ms. Allocated memory is still 71.3 MB. Free memory was 52.4 MB in the beginning and 50.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4996.90 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 49.9 MB in the beginning and 32.3 MB in the end (delta: 17.7 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. * Witness Printer took 71.31 ms. Allocated memory is still 88.1 MB. Free memory was 32.3 MB in the beginning and 29.6 MB in the end (delta: 2.7 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: [L81] double x = 0.0; [L82] double y = -0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; [L54] COND FALSE !(__fpclassify_double(x) == 0) [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; [L56] COND FALSE !(__fpclassify_double(y) == 0) [L59] EXPR x > y ? x : y [L59] return x > y ? x : y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L63] __uint32_t msw; [L66] ieee_double_shape_type gh_u; [L67] gh_u.value = (x) [L68] EXPR gh_u.parts.msw [L68] (msw) = gh_u.parts.msw [L71] return (msw & 0x80000000) != 0; [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1252b.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: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, 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, 0.6s 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, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 12524 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...