./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 216b013ad4da4eb5e85a87de58b407e30252b4c5 .......................................................................................................................................................................................................................................................................................................... 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_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 216b013ad4da4eb5e85a87de58b407e30252b4c5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:53:32,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:53:32,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:53:32,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:53:32,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:53:32,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:53:32,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:53:32,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:53:32,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:53:32,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:53:32,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:53:32,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:53:32,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:53:32,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:53:32,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:53:32,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:53:32,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:53:32,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:53:33,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:53:33,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:53:33,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:53:33,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:53:33,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:53:33,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:53:33,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:53:33,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:53:33,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:53:33,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:53:33,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:53:33,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:53:33,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:53:33,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:53:33,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:53:33,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:53:33,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:53:33,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:53:33,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:53:33,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:53:33,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:53:33,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:53:33,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:53:33,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:53:33,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:53:33,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:53:33,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:53:33,035 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:53:33,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:53:33,035 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:53:33,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:53:33,035 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:53:33,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:53:33,035 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:53:33,036 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:53:33,036 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:53:33,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:53:33,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:53:33,036 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:53:33,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:53:33,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:53:33,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:53:33,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:53:33,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:53:33,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:53:33,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:53:33,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:53:33,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:53:33,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:53:33,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:53:33,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:53:33,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:53:33,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:53:33,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:53:33,039 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_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-12-09 10:53:33,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:53:33,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:53:33,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:53:33,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:53:33,238 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:53:33,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-12-09 10:53:33,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data/eaf49ffe8/96db08cba7d94404a59527981a2c4d12/FLAGaa5d74ac0 [2020-12-09 10:53:33,641 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:53:33,642 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-12-09 10:53:33,647 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data/eaf49ffe8/96db08cba7d94404a59527981a2c4d12/FLAGaa5d74ac0 [2020-12-09 10:53:33,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data/eaf49ffe8/96db08cba7d94404a59527981a2c4d12 [2020-12-09 10:53:33,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:53:33,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:53:33,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:53:33,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:53:33,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:53:33,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6465b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33, skipping insertion in model container [2020-12-09 10:53:33,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:53:33,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:53:33,789 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2020-12-09 10:53:33,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:53:33,797 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:53:33,812 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2020-12-09 10:53:33,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:53:33,823 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:53:33,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33 WrapperNode [2020-12-09 10:53:33,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:53:33,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:53:33,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:53:33,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:53:33,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:53:33,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:53:33,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:53:33,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:53:33,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... [2020-12-09 10:53:33,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:53:33,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:53:33,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:53:33,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:53:33,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:53:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:53:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:53:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 10:53:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:53:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:53:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 10:53:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 10:53:34,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:53:34,393 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 10:53:34,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:53:34 BoogieIcfgContainer [2020-12-09 10:53:34,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:53:34,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:53:34,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:53:34,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:53:34,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:53:33" (1/3) ... [2020-12-09 10:53:34,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9823ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:53:34, skipping insertion in model container [2020-12-09 10:53:34,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:33" (2/3) ... [2020-12-09 10:53:34,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9823ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:53:34, skipping insertion in model container [2020-12-09 10:53:34,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:53:34" (3/3) ... [2020-12-09 10:53:34,403 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-12-09 10:53:34,416 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:53:34,419 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:53:34,426 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:53:34,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:53:34,443 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:53:34,443 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:53:34,443 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:53:34,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:53:34,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:53:34,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:53:34,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:53:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-09 10:53:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 10:53:34,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:34,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:34,456 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:34,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1732211786, now seen corresponding path program 1 times [2020-12-09 10:53:34,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:53:34,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160125730] [2020-12-09 10:53:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:53:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:34,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160125730] [2020-12-09 10:53:34,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:34,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:53:34,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917970119] [2020-12-09 10:53:34,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 10:53:34,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:53:34,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 10:53:34,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 10:53:34,579 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-12-09 10:53:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:34,589 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-12-09 10:53:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 10:53:34,590 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-09 10:53:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:34,596 INFO L225 Difference]: With dead ends: 27 [2020-12-09 10:53:34,596 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 10:53:34,598 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 [2020-12-09 10:53:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 10:53:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 10:53:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 10:53:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-09 10:53:34,618 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-12-09 10:53:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:34,619 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-09 10:53:34,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 10:53:34,619 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-09 10:53:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 10:53:34,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:34,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:34,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:53:34,620 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:34,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:34,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1298590837, now seen corresponding path program 1 times [2020-12-09 10:53:34,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:53:34,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18401346] [2020-12-09 10:53:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:53:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:53:34,661 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:53:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:53:34,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:53:34,705 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 10:53:34,705 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 10:53:34,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:53:34,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:53:34 BoogieIcfgContainer [2020-12-09 10:53:34,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:53:34,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:53:34,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:53:34,723 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:53:34,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:53:34" (3/4) ... [2020-12-09 10:53:34,725 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 10:53:34,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:53:34,726 INFO L168 Benchmark]: Toolchain (without parser) took 1067.04 ms. Allocated memory is still 96.5 MB. Free memory was 55.9 MB in the beginning and 58.3 MB in the end (delta: -2.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:53:34,727 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:53:34,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.10 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 69.4 MB in the end (delta: -13.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:53:34,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.43 ms. Allocated memory is still 96.5 MB. Free memory was 69.4 MB in the beginning and 67.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:53:34,729 INFO L168 Benchmark]: Boogie Preprocessor took 19.76 ms. Allocated memory is still 96.5 MB. Free memory was 67.7 MB in the beginning and 66.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:53:34,729 INFO L168 Benchmark]: RCFGBuilder took 523.51 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 45.6 MB in the end (delta: 20.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 10:53:34,729 INFO L168 Benchmark]: TraceAbstraction took 325.37 ms. Allocated memory is still 96.5 MB. Free memory was 45.1 MB in the beginning and 58.9 MB in the end (delta: -13.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:53:34,730 INFO L168 Benchmark]: Witness Printer took 2.77 ms. Allocated memory is still 96.5 MB. Free memory was 58.9 MB in the beginning and 58.3 MB in the end (delta: 567.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:53:34,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 164.10 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 69.4 MB in the end (delta: -13.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.43 ms. Allocated memory is still 96.5 MB. Free memory was 69.4 MB in the beginning and 67.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.76 ms. Allocated memory is still 96.5 MB. Free memory was 67.7 MB in the beginning and 66.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 523.51 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 45.6 MB in the end (delta: 20.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 325.37 ms. Allocated memory is still 96.5 MB. Free memory was 45.1 MB in the beginning and 58.9 MB in the end (delta: -13.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.77 ms. Allocated memory is still 96.5 MB. Free memory was 58.9 MB in the beginning and 58.3 MB in the end (delta: 567.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] double res = fmax_double(x, y); [L18] return x != x; [L73] COND TRUE !isnan_double(res) [L74] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 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=14occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 0.2.0-7b2dab5 [2020-12-09 10:53:36,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:53:36,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:53:36,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:53:36,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:53:36,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:53:36,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:53:36,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:53:36,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:53:36,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:53:36,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:53:36,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:53:36,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:53:36,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:53:36,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:53:36,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:53:36,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:53:36,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:53:36,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:53:36,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:53:36,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:53:36,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:53:36,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:53:36,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:53:36,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:53:36,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:53:36,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:53:36,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:53:36,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:53:36,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:53:36,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:53:36,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:53:36,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:53:36,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:53:36,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:53:36,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:53:36,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:53:36,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:53:36,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:53:36,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:53:36,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:53:36,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 10:53:36,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:53:36,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:53:36,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:53:36,479 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:53:36,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:53:36,479 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:53:36,479 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:53:36,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:53:36,479 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:53:36,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:53:36,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:53:36,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:53:36,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:53:36,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:53:36,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:53:36,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:53:36,481 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:53:36,481 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 10:53:36,481 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 10:53:36,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:53:36,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:53:36,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:53:36,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:53:36,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:53:36,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 10:53:36,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:53:36,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:53:36,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:53:36,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:53:36,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:53:36,483 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 10:53:36,483 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 10:53:36,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:53:36,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:53:36,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:53:36,483 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_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-12-09 10:53:36,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:53:36,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:53:36,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:53:36,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:53:36,754 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:53:36,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-12-09 10:53:36,800 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data/3b9d0fbf7/165f54efd31440ca9483c5f89b7b2ab9/FLAG6379f0178 [2020-12-09 10:53:37,182 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:53:37,182 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-12-09 10:53:37,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data/3b9d0fbf7/165f54efd31440ca9483c5f89b7b2ab9/FLAG6379f0178 [2020-12-09 10:53:37,197 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/data/3b9d0fbf7/165f54efd31440ca9483c5f89b7b2ab9 [2020-12-09 10:53:37,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:53:37,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:53:37,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:53:37,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:53:37,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:53:37,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347b85e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37, skipping insertion in model container [2020-12-09 10:53:37,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:53:37,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:53:37,340 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2020-12-09 10:53:37,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:53:37,352 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:53:37,374 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2020-12-09 10:53:37,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:53:37,396 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:53:37,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37 WrapperNode [2020-12-09 10:53:37,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:53:37,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:53:37,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:53:37,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:53:37,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:53:37,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:53:37,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:53:37,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:53:37,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... [2020-12-09 10:53:37,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:53:37,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:53:37,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:53:37,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:53:37,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-09 10:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 10:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 10:53:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:53:37,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:53:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 10:53:37,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:53:37,758 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 10:53:37,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:53:37 BoogieIcfgContainer [2020-12-09 10:53:37,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:53:37,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:53:37,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:53:37,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:53:37,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:53:37" (1/3) ... [2020-12-09 10:53:37,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1d0f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:53:37, skipping insertion in model container [2020-12-09 10:53:37,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:53:37" (2/3) ... [2020-12-09 10:53:37,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1d0f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:53:37, skipping insertion in model container [2020-12-09 10:53:37,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:53:37" (3/3) ... [2020-12-09 10:53:37,765 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-12-09 10:53:37,775 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:53:37,777 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:53:37,785 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:53:37,804 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:53:37,804 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:53:37,805 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:53:37,805 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:53:37,805 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:53:37,805 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:53:37,805 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:53:37,805 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:53:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-09 10:53:37,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 10:53:37,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:37,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:37,818 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:37,822 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-12-09 10:53:37,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:37,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843475709] [2020-12-09 10:53:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 [2020-12-09 10:53:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:37,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 10:53:37,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:37,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:37,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843475709] [2020-12-09 10:53:37,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:37,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:53:37,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137888891] [2020-12-09 10:53:37,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 10:53:37,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:37,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 10:53:37,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 10:53:37,952 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-09 10:53:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:37,965 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2020-12-09 10:53:37,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 10:53:37,966 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 10:53:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:37,972 INFO L225 Difference]: With dead ends: 54 [2020-12-09 10:53:37,973 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 10:53:37,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 10:53:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 10:53:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-09 10:53:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 10:53:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-12-09 10:53:37,998 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-12-09 10:53:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:37,999 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-12-09 10:53:37,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 10:53:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-12-09 10:53:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 10:53:37,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:37,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:38,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 10:53:38,200 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:38,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:38,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-12-09 10:53:38,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:38,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33014690] [2020-12-09 10:53:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 [2020-12-09 10:53:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:38,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:53:38,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:38,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:38,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33014690] [2020-12-09 10:53:38,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:38,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:53:38,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255476558] [2020-12-09 10:53:38,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:53:38,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:38,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:53:38,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:53:38,307 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-12-09 10:53:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:38,370 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-12-09 10:53:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:53:38,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 10:53:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:38,372 INFO L225 Difference]: With dead ends: 41 [2020-12-09 10:53:38,372 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 10:53:38,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:53:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 10:53:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-12-09 10:53:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 10:53:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-09 10:53:38,379 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-12-09 10:53:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:38,379 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-09 10:53:38,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:53:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-09 10:53:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 10:53:38,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:38,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:38,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 10:53:38,582 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:38,584 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-12-09 10:53:38,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:38,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871166113] [2020-12-09 10:53:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 [2020-12-09 10:53:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:38,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:53:38,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:38,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:38,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:38,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871166113] [2020-12-09 10:53:38,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:38,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:53:38,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125129131] [2020-12-09 10:53:38,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:53:38,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:38,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:53:38,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:53:38,726 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-09 10:53:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:38,915 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-09 10:53:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:53:38,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 10:53:38,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:38,916 INFO L225 Difference]: With dead ends: 43 [2020-12-09 10:53:38,916 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 10:53:38,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:53:38,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 10:53:38,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-09 10:53:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 10:53:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-09 10:53:38,920 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-12-09 10:53:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:38,920 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-09 10:53:38,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:53:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-09 10:53:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 10:53:38,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:38,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:39,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 10:53:39,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-12-09 10:53:39,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:39,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289485057] [2020-12-09 10:53:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 [2020-12-09 10:53:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:39,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:53:39,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:39,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:39,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289485057] [2020-12-09 10:53:39,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:39,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:53:39,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081946594] [2020-12-09 10:53:39,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:53:39,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:39,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:53:39,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:53:39,207 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-09 10:53:39,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:39,407 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-09 10:53:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:53:39,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 10:53:39,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:39,408 INFO L225 Difference]: With dead ends: 43 [2020-12-09 10:53:39,408 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 10:53:39,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:53:39,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 10:53:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-09 10:53:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 10:53:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-09 10:53:39,412 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-12-09 10:53:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:39,412 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-09 10:53:39,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:53:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-09 10:53:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 10:53:39,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:39,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:39,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 10:53:39,614 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:39,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:39,615 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-12-09 10:53:39,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:39,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643263892] [2020-12-09 10:53:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 [2020-12-09 10:53:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:39,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:53:39,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:39,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:39,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643263892] [2020-12-09 10:53:39,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:39,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:53:39,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096942520] [2020-12-09 10:53:39,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:53:39,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:39,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:53:39,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:53:39,738 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-09 10:53:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:40,156 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-09 10:53:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:53:40,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 10:53:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:40,157 INFO L225 Difference]: With dead ends: 43 [2020-12-09 10:53:40,157 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 10:53:40,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:53:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 10:53:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-09 10:53:40,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 10:53:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-09 10:53:40,160 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-12-09 10:53:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:40,161 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-09 10:53:40,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:53:40,161 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-09 10:53:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 10:53:40,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:40,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:40,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 10:53:40,362 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:40,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:40,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-12-09 10:53:40,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:40,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906581528] [2020-12-09 10:53:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 [2020-12-09 10:53:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:40,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 10:53:40,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:40,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:40,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906581528] [2020-12-09 10:53:40,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:40,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:53:40,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099717230] [2020-12-09 10:53:40,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:53:40,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:40,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:53:40,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:53:40,520 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 6 states. [2020-12-09 10:53:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:40,726 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-12-09 10:53:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:53:40,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 10:53:40,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:40,727 INFO L225 Difference]: With dead ends: 36 [2020-12-09 10:53:40,727 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 10:53:40,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:53:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 10:53:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-12-09 10:53:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 10:53:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-12-09 10:53:40,730 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-12-09 10:53:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:40,730 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-12-09 10:53:40,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:53:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-12-09 10:53:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 10:53:40,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:40,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:40,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 10:53:40,932 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:40,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:40,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-12-09 10:53:40,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:40,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444454986] [2020-12-09 10:53:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 [2020-12-09 10:53:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:41,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:53:41,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:41,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:41,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444454986] [2020-12-09 10:53:41,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:41,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:53:41,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524012679] [2020-12-09 10:53:41,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:53:41,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:41,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:53:41,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:53:41,081 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 4 states. [2020-12-09 10:53:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:41,136 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-12-09 10:53:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:53:41,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 10:53:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:41,137 INFO L225 Difference]: With dead ends: 41 [2020-12-09 10:53:41,137 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 10:53:41,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:53:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 10:53:41,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-12-09 10:53:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 10:53:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-12-09 10:53:41,140 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-12-09 10:53:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:41,140 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-12-09 10:53:41,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:53:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-12-09 10:53:41,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 10:53:41,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:41,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:41,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 10:53:41,342 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:41,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:41,342 INFO L82 PathProgramCache]: Analyzing trace with hash 874917212, now seen corresponding path program 1 times [2020-12-09 10:53:41,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:41,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627862803] [2020-12-09 10:53:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/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 [2020-12-09 10:53:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:41,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:53:41,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:41,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:41,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627862803] [2020-12-09 10:53:41,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:41,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:53:41,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208289538] [2020-12-09 10:53:41,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:53:41,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:41,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:53:41,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:53:41,485 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 4 states. [2020-12-09 10:53:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:41,534 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-12-09 10:53:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:53:41,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 10:53:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:41,535 INFO L225 Difference]: With dead ends: 43 [2020-12-09 10:53:41,535 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 10:53:41,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:53:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 10:53:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-09 10:53:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 10:53:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-12-09 10:53:41,538 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 17 [2020-12-09 10:53:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:41,539 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-12-09 10:53:41,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:53:41,539 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-12-09 10:53:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 10:53:41,539 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:41,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:41,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 10:53:41,741 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:41,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:41,742 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-12-09 10:53:41,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:41,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082503736] [2020-12-09 10:53:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 10:53:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:41,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 10:53:41,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:41,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:41,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082503736] [2020-12-09 10:53:41,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:41,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:53:41,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818894451] [2020-12-09 10:53:41,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 10:53:41,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:41,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 10:53:41,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:53:41,970 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 7 states. [2020-12-09 10:53:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:42,214 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-12-09 10:53:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:53:42,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-09 10:53:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:42,215 INFO L225 Difference]: With dead ends: 32 [2020-12-09 10:53:42,215 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 10:53:42,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:53:42,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 10:53:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 10:53:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 10:53:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-12-09 10:53:42,218 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 18 [2020-12-09 10:53:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:42,218 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-12-09 10:53:42,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 10:53:42,219 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2020-12-09 10:53:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 10:53:42,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:42,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:42,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 10:53:42,421 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:42,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1049576048, now seen corresponding path program 1 times [2020-12-09 10:53:42,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:42,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268216694] [2020-12-09 10:53:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 10:53:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:42,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:53:42,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:42,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:42,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268216694] [2020-12-09 10:53:42,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:42,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:53:42,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865340547] [2020-12-09 10:53:42,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:53:42,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:53:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:53:42,536 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 4 states. [2020-12-09 10:53:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:42,606 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-12-09 10:53:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:53:42,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 10:53:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:42,607 INFO L225 Difference]: With dead ends: 32 [2020-12-09 10:53:42,607 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 10:53:42,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:53:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 10:53:42,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-12-09 10:53:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 10:53:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-09 10:53:42,609 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-12-09 10:53:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:42,609 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-09 10:53:42,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:53:42,609 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-09 10:53:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 10:53:42,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:42,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:42,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 10:53:42,811 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:42,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1983383519, now seen corresponding path program 1 times [2020-12-09 10:53:42,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:42,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150204884] [2020-12-09 10:53:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 10:53:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:42,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:53:42,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:42,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:42,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150204884] [2020-12-09 10:53:42,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:42,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:53:42,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793199075] [2020-12-09 10:53:42,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:53:42,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:42,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:53:42,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:53:42,953 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-12-09 10:53:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:43,027 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-12-09 10:53:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:53:43,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-09 10:53:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:43,028 INFO L225 Difference]: With dead ends: 32 [2020-12-09 10:53:43,028 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 10:53:43,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:53:43,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 10:53:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-12-09 10:53:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 10:53:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-09 10:53:43,032 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2020-12-09 10:53:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:43,032 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-09 10:53:43,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:53:43,032 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-09 10:53:43,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 10:53:43,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:53:43,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:53:43,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 10:53:43,234 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:53:43,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:53:43,235 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-12-09 10:53:43,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:53:43,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261975345] [2020-12-09 10:53:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-09 10:53:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:53:43,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 10:53:43,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:53:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:53:43,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:53:43,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261975345] [2020-12-09 10:53:43,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:53:43,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:53:43,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708517488] [2020-12-09 10:53:43,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:53:43,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:53:43,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:53:43,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:53:43,494 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-12-09 10:53:43,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:53:43,627 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-12-09 10:53:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:53:43,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-09 10:53:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:53:43,628 INFO L225 Difference]: With dead ends: 23 [2020-12-09 10:53:43,628 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:53:43,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:53:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:53:43,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:53:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:53:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:53:43,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-09 10:53:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:53:43,628 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:53:43,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:53:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:53:43,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:53:43,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 10:53:43,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:53:44,075 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 10:53:44,116 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2020-12-09 10:53:44,116 INFO L258 CegarLoopResult]: At program point L31-2(lines 31 36) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y))) [2020-12-09 10:53:44,116 INFO L262 CegarLoopResult]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2020-12-09 10:53:44,116 INFO L262 CegarLoopResult]: For program point L31-5(lines 31 36) no Hoare annotation was computed. [2020-12-09 10:53:44,116 INFO L258 CegarLoopResult]: At program point L31-6(lines 31 36) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y))) [2020-12-09 10:53:44,116 INFO L262 CegarLoopResult]: For program point L31-7(lines 28 53) no Hoare annotation was computed. [2020-12-09 10:53:44,116 INFO L258 CegarLoopResult]: At program point L52(lines 28 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y))) [2020-12-09 10:53:44,116 INFO L258 CegarLoopResult]: At program point L52-1(lines 28 53) the Hoare annotation is: (let ((.cse0 (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)))) (or (and .cse0 (= (_ bv4 32) |ULTIMATE.start___fpclassify_double_#res|)) (and .cse0 (= (_ bv2 32) |ULTIMATE.start___fpclassify_double_#res|)) (and (= (_ bv1 32) |ULTIMATE.start___fpclassify_double_#res|) .cse0) (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x)) .cse0) (and (= (_ bv3 32) |ULTIMATE.start___fpclassify_double_#res|) .cse0))) [2020-12-09 10:53:44,116 INFO L262 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-12-09 10:53:44,116 INFO L262 CegarLoopResult]: For program point L48-1(lines 48 52) no Hoare annotation was computed. [2020-12-09 10:53:44,116 INFO L265 CegarLoopResult]: At program point L77(lines 65 78) the Hoare annotation is: true [2020-12-09 10:53:44,116 INFO L262 CegarLoopResult]: For program point L44(lines 44 52) no Hoare annotation was computed. [2020-12-09 10:53:44,116 INFO L262 CegarLoopResult]: For program point L44-1(lines 44 52) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point L41(lines 41 52) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point L41-1(lines 41 52) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point L62-2(line 62) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L258 CegarLoopResult]: At program point L62-3(lines 55 63) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmax_double_#res|))) [2020-12-09 10:53:44,117 INFO L262 CegarLoopResult]: For program point L59(lines 59 60) no Hoare annotation was computed. [2020-12-09 10:53:44,117 INFO L258 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmax_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-12-09 10:53:44,122 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,122 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,127 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,127 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,133 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,133 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,133 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,134 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,134 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,134 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,134 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,135 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,135 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:53:44 BoogieIcfgContainer [2020-12-09 10:53:44,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:53:44,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:53:44,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:53:44,137 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:53:44,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:53:37" (3/4) ... [2020-12-09 10:53:44,140 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:53:44,150 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-09 10:53:44,150 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 10:53:44,150 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 10:53:44,150 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:53:44,167 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) [2020-12-09 10:53:44,167 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) [2020-12-09 10:53:44,167 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2020-12-09 10:53:44,168 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) [2020-12-09 10:53:44,168 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result [2020-12-09 10:53:44,168 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 4bv32 == \result) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 2bv32 == \result)) || (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || (3bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) [2020-12-09 10:53:44,184 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f2252e8a-aad6-4a7d-8132-70e71be2eadf/bin/utaipan/witness.graphml [2020-12-09 10:53:44,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:53:44,185 INFO L168 Benchmark]: Toolchain (without parser) took 6984.61 ms. Allocated memory was 52.4 MB in the beginning and 94.4 MB in the end (delta: 41.9 MB). Free memory was 30.2 MB in the beginning and 42.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:53:44,185 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:53:44,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.77 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 30.0 MB in the beginning and 60.5 MB in the end (delta: -30.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:53:44,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.15 ms. Allocated memory is still 77.6 MB. Free memory was 60.5 MB in the beginning and 58.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:53:44,186 INFO L168 Benchmark]: Boogie Preprocessor took 23.91 ms. Allocated memory is still 77.6 MB. Free memory was 58.7 MB in the beginning and 57.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:53:44,186 INFO L168 Benchmark]: RCFGBuilder took 302.33 ms. Allocated memory is still 77.6 MB. Free memory was 56.9 MB in the beginning and 59.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:53:44,187 INFO L168 Benchmark]: TraceAbstraction took 6375.61 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 59.1 MB in the beginning and 45.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:53:44,187 INFO L168 Benchmark]: Witness Printer took 47.29 ms. Allocated memory is still 94.4 MB. Free memory was 45.3 MB in the beginning and 42.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:53:44,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 195.77 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 30.0 MB in the beginning and 60.5 MB in the end (delta: -30.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.15 ms. Allocated memory is still 77.6 MB. Free memory was 60.5 MB in the beginning and 58.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.91 ms. Allocated memory is still 77.6 MB. Free memory was 58.7 MB in the beginning and 57.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 302.33 ms. Allocated memory is still 77.6 MB. Free memory was 56.9 MB in the beginning and 59.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6375.61 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 59.1 MB in the beginning and 45.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * Witness Printer took 47.29 ms. Allocated memory is still 94.4 MB. Free memory was 45.3 MB in the beginning and 42.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 55]: Loop Invariant [2020-12-09 10:53:44,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 18]: Loop Invariant [2020-12-09 10:53:44,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant [2020-12-09 10:53:44,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) - InvariantResult [Line: 28]: Loop Invariant [2020-12-09 10:53:44,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 4bv32 == \result) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 2bv32 == \result)) || (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || (3bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) - InvariantResult [Line: 31]: Loop Invariant [2020-12-09 10:53:44,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) - InvariantResult [Line: 28]: Loop Invariant [2020-12-09 10:53:44,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 10:53:44,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 413 SDtfs, 132 SDslu, 682 SDs, 0 SdLazy, 219 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 12 MinimizatonAttempts, 68 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 21 NumberOfFragments, 139 HoareAnnotationTreeSize, 7 FomulaSimplifications, 808 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 169 ConstructedInterpolants, 36 QuantifiedInterpolants, 6671 SizeOfPredicates, 35 NumberOfNonLiveVariables, 751 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...