./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH --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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:10:10,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:10:10,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:10:11,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:10:11,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:10:11,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:10:11,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:10:11,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:10:11,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:10:11,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:10:11,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:10:11,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:10:11,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:10:11,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:10:11,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:10:11,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:10:11,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:10:11,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:10:11,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:10:11,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:10:11,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:10:11,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:10:11,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:10:11,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:10:11,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:10:11,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:10:11,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:10:11,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:10:11,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:10:11,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:10:11,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:10:11,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:10:11,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:10:11,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:10:11,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:10:11,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:10:11,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:10:11,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:10:11,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:10:11,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:10:11,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:10:11,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:10:11,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:10:11,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:10:11,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:10:11,179 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:10:11,179 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:10:11,180 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:10:11,180 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:10:11,180 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:10:11,180 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:10:11,181 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:10:11,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:10:11,182 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:10:11,183 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:10:11,183 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:10:11,183 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:10:11,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:10:11,184 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:10:11,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:10:11,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:10:11,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:10:11,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:10:11,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:10:11,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:10:11,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:10:11,187 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:10:11,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:10:11,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:10:11,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:10:11,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:10:11,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:10:11,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:10:11,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:10:11,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:10:11,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:10:11,191 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:10:11,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:10:11,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:10:11,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:10:11,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:10:11,193 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_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2021-11-03 04:10:11,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:10:11,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:10:11,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:10:11,615 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:10:11,616 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:10:11,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-11-03 04:10:11,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data/c4a2f9d81/d8f94cd07c694f28855072da047f593c/FLAGc48bdda33 [2021-11-03 04:10:12,359 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:10:12,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-11-03 04:10:12,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data/c4a2f9d81/d8f94cd07c694f28855072da047f593c/FLAGc48bdda33 [2021-11-03 04:10:12,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data/c4a2f9d81/d8f94cd07c694f28855072da047f593c [2021-11-03 04:10:12,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:10:12,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:10:12,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:10:12,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:10:12,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:10:12,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:12" (1/1) ... [2021-11-03 04:10:12,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489ea34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:12, skipping insertion in model container [2021-11-03 04:10:12,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:12" (1/1) ... [2021-11-03 04:10:12,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:10:12,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:10:12,953 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-11-03 04:10:12,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:12,985 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:10:13,000 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-11-03 04:10:13,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:13,019 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:10:13,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13 WrapperNode [2021-11-03 04:10:13,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:10:13,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:13,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:10:13,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:10:13,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:13,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:10:13,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:10:13,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:10:13,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:10:13,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:10:13,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:10:13,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:10:13,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (1/1) ... [2021-11-03 04:10:13,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:10:13,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:13,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:10:13,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:10:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:10:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:10:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:10:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:10:13,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:10:13,461 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:10:13,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:13 BoogieIcfgContainer [2021-11-03 04:10:13,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:10:13,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:10:13,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:10:13,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:10:13,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:10:12" (1/3) ... [2021-11-03 04:10:13,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d57c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:13, skipping insertion in model container [2021-11-03 04:10:13,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:13" (2/3) ... [2021-11-03 04:10:13,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d57c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:13, skipping insertion in model container [2021-11-03 04:10:13,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:13" (3/3) ... [2021-11-03 04:10:13,474 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2021-11-03 04:10:13,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:10:13,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:10:13,540 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:10:13,562 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:10:13,562 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:10:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:10:13,609 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:13,609 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:10:13,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:10:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:13,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2021-11-03 04:10:13,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:13,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161015140] [2021-11-03 04:10:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:13,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:10:13,796 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:10:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:10:13,868 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:10:13,871 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:10:13,873 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:10:13,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:10:13,879 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 04:10:13,882 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:10:13,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:10:13 BoogieIcfgContainer [2021-11-03 04:10:13,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:10:13,909 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:10:13,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:10:13,909 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:10:13,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:13" (3/4) ... [2021-11-03 04:10:13,914 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:10:13,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:10:13,926 INFO L168 Benchmark]: Toolchain (without parser) took 1210.86 ms. Allocated memory is still 104.9 MB. Free memory was 64.0 MB in the beginning and 54.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:10:13,927 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 80.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:10:13,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.69 ms. Allocated memory is still 104.9 MB. Free memory was 63.8 MB in the beginning and 80.2 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:10:13,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.40 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:10:13,930 INFO L168 Benchmark]: Boogie Preprocessor took 39.88 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 77.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:10:13,931 INFO L168 Benchmark]: RCFGBuilder took 353.68 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 67.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:10:13,934 INFO L168 Benchmark]: TraceAbstraction took 438.72 ms. Allocated memory is still 104.9 MB. Free memory was 67.4 MB in the beginning and 54.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:10:13,940 INFO L168 Benchmark]: Witness Printer took 6.80 ms. Allocated memory is still 104.9 MB. Free memory was 54.8 MB in the beginning and 54.5 MB in the end (delta: 310.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:10:13,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 80.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.69 ms. Allocated memory is still 104.9 MB. Free memory was 63.8 MB in the beginning and 80.2 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.40 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.88 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 77.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 353.68 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 67.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 438.72 ms. Allocated memory is still 104.9 MB. Free memory was 67.4 MB in the beginning and 54.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.80 ms. Allocated memory is still 104.9 MB. Free memory was 54.8 MB in the beginning and 54.5 MB in the end (delta: 310.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:10:14,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH --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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:10:16,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:10:16,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:10:16,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:10:16,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:10:16,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:10:16,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:10:16,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:10:16,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:10:16,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:10:16,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:10:16,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:10:16,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:10:16,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:10:16,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:10:16,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:10:16,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:10:16,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:10:16,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:10:16,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:10:16,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:10:16,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:10:16,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:10:16,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:10:16,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:10:16,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:10:16,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:10:16,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:10:16,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:10:16,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:10:16,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:10:16,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:10:16,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:10:16,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:10:16,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:10:16,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:10:16,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:10:16,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:10:16,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:10:16,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:10:16,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:10:16,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:10:16,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:10:16,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:10:16,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:10:16,768 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:10:16,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:10:16,769 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:10:16,769 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:10:16,769 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:10:16,770 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:10:16,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:10:16,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:10:16,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:10:16,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:10:16,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:10:16,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:10:16,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:10:16,773 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:10:16,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:10:16,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:10:16,774 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:10:16,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:10:16,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:10:16,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:10:16,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:10:16,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:10:16,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:10:16,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:10:16,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:10:16,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:10:16,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:10:16,777 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:10:16,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:10:16,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:10:16,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:10:16,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:10:16,778 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_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2021-11-03 04:10:17,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:10:17,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:10:17,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:10:17,286 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:10:17,287 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:10:17,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-11-03 04:10:17,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data/007706d23/ae93f60a058845a59b0dd8754b5810c7/FLAGe05c59e11 [2021-11-03 04:10:17,897 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:10:17,897 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-11-03 04:10:17,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data/007706d23/ae93f60a058845a59b0dd8754b5810c7/FLAGe05c59e11 [2021-11-03 04:10:18,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/data/007706d23/ae93f60a058845a59b0dd8754b5810c7 [2021-11-03 04:10:18,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:10:18,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:10:18,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:10:18,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:10:18,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:10:18,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2964b5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18, skipping insertion in model container [2021-11-03 04:10:18,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:10:18,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:10:18,514 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-11-03 04:10:18,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:18,540 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:10:18,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-11-03 04:10:18,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:18,597 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:10:18,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18 WrapperNode [2021-11-03 04:10:18,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:10:18,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:18,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:10:18,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:10:18,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:18,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:10:18,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:10:18,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:10:18,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:10:18,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:10:18,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:10:18,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:10:18,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (1/1) ... [2021-11-03 04:10:18,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:10:18,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:18,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:10:18,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:10:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:10:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:10:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:10:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:10:19,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:10:19,425 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:10:19,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:19 BoogieIcfgContainer [2021-11-03 04:10:19,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:10:19,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:10:19,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:10:19,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:10:19,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:10:18" (1/3) ... [2021-11-03 04:10:19,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d15029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:19, skipping insertion in model container [2021-11-03 04:10:19,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:18" (2/3) ... [2021-11-03 04:10:19,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d15029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:19, skipping insertion in model container [2021-11-03 04:10:19,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:19" (3/3) ... [2021-11-03 04:10:19,450 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2021-11-03 04:10:19,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:10:19,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:10:19,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:10:19,539 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:10:19,539 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:10:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:10:19,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:19,562 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:10:19,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:10:19,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-03 04:10:19,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:19,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714421477] [2021-11-03 04:10:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:19,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:19,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:19,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:19,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:10:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:19,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:10:19,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:20,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:21,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:21,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714421477] [2021-11-03 04:10:21,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714421477] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:21,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:21,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:10:21,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90715316] [2021-11-03 04:10:21,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:10:21,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:21,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:10:21,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:10:21,338 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:24,086 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-11-03 04:10:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:10:24,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:10:24,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:24,096 INFO L225 Difference]: With dead ends: 21 [2021-11-03 04:10:24,097 INFO L226 Difference]: Without dead ends: 9 [2021-11-03 04:10:24,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:10:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-03 04:10:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-03 04:10:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-03 04:10:24,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-03 04:10:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:24,130 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-03 04:10:24,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-03 04:10:24,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:10:24,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:24,131 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:24,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:24,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:24,332 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:10:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:24,333 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-11-03 04:10:24,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:24,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32454436] [2021-11-03 04:10:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:24,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:24,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:24,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:10:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:24,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:10:24,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:26,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:40,023 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-11-03 04:10:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-03 04:10:40,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:40,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32454436] [2021-11-03 04:10:40,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32454436] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:40,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1757836392] [2021-11-03 04:10:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:40,690 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:10:40,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:10:40,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:10:40,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-03 04:10:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:41,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:10:41,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:41,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-03 04:10:47,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1757836392] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:47,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364764073] [2021-11-03 04:10:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:47,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:47,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:47,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:10:47,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:10:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:51,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 04:10:51,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:59,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:26,837 WARN L207 SmtUtils]: Spent 6.45 s on a formula simplification that was a NOOP. DAG size: 11 [2021-11-03 04:11:36,609 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-11-03 04:11:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-03 04:11:37,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364764073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:11:37,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:11:37,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 7] total 15 [2021-11-03 04:11:37,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010503018] [2021-11-03 04:11:37,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:11:37,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:11:37,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=113, Unknown=5, NotChecked=46, Total=210 [2021-11-03 04:11:37,807 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:46,665 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse2) .cse0)))) (and (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) .cse1) (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse2) c_ULTIMATE.start_main_~x1~0) .cse1 (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-11-03 04:12:12,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:12,097 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-11-03 04:12:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:12:12,098 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:12:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:12,104 INFO L225 Difference]: With dead ends: 16 [2021-11-03 04:12:12,104 INFO L226 Difference]: Without dead ends: 12 [2021-11-03 04:12:12,105 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=72, Invalid=172, Unknown=8, NotChecked=90, Total=342 [2021-11-03 04:12:12,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-03 04:12:12,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-03 04:12:12,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:12,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-03 04:12:12,107 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-11-03 04:12:12,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:12,107 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-03 04:12:12,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:12,108 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-03 04:12:12,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:12:12,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:12,108 INFO L513 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2021-11-03 04:12:12,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-03 04:12:12,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:12,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:12:12,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:12,710 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:12:12,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:12,710 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 2 times [2021-11-03 04:12:12,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:12,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903939877] [2021-11-03 04:12:12,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:12:12,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:12,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:12,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:12,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:12:13,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:12:13,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:12:13,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:12:13,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:53,170 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 04:13:00,415 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 04:13:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 4 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-03 04:13:00,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:05,605 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-11-03 04:13:13,174 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-11-03 04:13:15,215 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-11-03 04:13:24,165 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-11-03 04:13:26,223 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-11-03 04:13:36,705 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-11-03 04:13:38,785 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-11-03 04:13:49,569 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-11-03 04:13:51,664 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-11-03 04:14:02,332 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-11-03 04:14:04,412 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-11-03 04:14:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-03 04:14:04,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:04,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903939877] [2021-11-03 04:14:04,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903939877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:04,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [729842722] [2021-11-03 04:14:04,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:14:04,414 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:14:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:14:04,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:14:04,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 04:14:05,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:14:05,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:14:05,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:14:05,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 4 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-03 04:14:16,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-03 04:14:58,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [729842722] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:58,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784863516] [2021-11-03 04:14:58,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:14:58,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:14:58,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:14:58,336 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:14:58,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 04:15:07,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:15:07,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:15:07,707 WARN L261 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 04:15:07,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 3 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-03 04:15:47,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:05,041 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-11-03 04:16:23,958 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 .cse2))) (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2021-11-03 04:16:26,017 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 .cse2))) (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2021-11-03 04:16:45,425 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse2 .cse3)))))) is different from false [2021-11-03 04:16:47,500 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse2 .cse3)))))) is different from true [2021-11-03 04:17:02,670 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse2 .cse3)))))) is different from false [2021-11-03 04:17:04,768 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse2 .cse3)))))) is different from true [2021-11-03 04:17:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-03 04:17:13,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784863516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:17:13,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:17:13,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8, 10, 8, 10] total 24 [2021-11-03 04:17:13,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252254339] [2021-11-03 04:17:13,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 04:17:13,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:13,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 04:17:13,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=115, Unknown=28, NotChecked=352, Total=552 [2021-11-03 04:17:13,346 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:15,864 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 04:17:17,968 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) .cse2))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 .cse2))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 .cse2))) (let ((.cse0 (fp.eq .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse5 .cse2) .cse5)))) (and (or .cse0 .cse1) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse2) c_ULTIMATE.start_main_~x1~0) (or .cse0 .cse1 (fp.eq .cse3 .cse4)) (= c_currentRoundingMode roundNearestTiesToEven))))))) is different from false [2021-11-03 04:17:20,070 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) .cse2))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 .cse2))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 .cse2))) (let ((.cse0 (fp.eq .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse5 .cse2) .cse5)))) (and (or .cse0 .cse1) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse2) c_ULTIMATE.start_main_~x1~0) (or .cse0 .cse1 (fp.eq .cse3 .cse4)) (= c_currentRoundingMode roundNearestTiesToEven))))))) is different from true [2021-11-03 04:17:22,148 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 .cse0))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 .cse0))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse5 .cse0) .cse5))) (.cse2 (fp.eq .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0)) (or .cse1 .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (or .cse1 .cse2 (fp.eq .cse3 .cse4)))))))) is different from false [2021-11-03 04:17:24,227 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 .cse0))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 .cse0))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse5 .cse0) .cse5))) (.cse2 (fp.eq .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0)) (or .cse1 .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (or .cse1 .cse2 (fp.eq .cse3 .cse4)))))))) is different from true [2021-11-03 04:17:26,309 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse3))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 .cse3))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse3) .cse4))) (.cse2 (fp.eq .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) .cse1 (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) .cse2) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3)) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse3) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven) (or .cse1 .cse2)))))) is different from false [2021-11-03 04:17:28,370 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse3))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 .cse3))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse3) .cse4))) (.cse2 (fp.eq .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) .cse1 (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) .cse2) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3)) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse3) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven) (or .cse1 .cse2)))))) is different from true [2021-11-03 04:17:30,488 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2))) (let ((.cse0 (fp.eq .cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse3 .cse2) .cse3)))) (and (or .cse0 .cse1) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse2) .cse2) .cse2)) (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) .cse0 .cse1) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-11-03 04:17:32,515 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 04:17:34,604 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0) (or (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 04:17:43,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:43,524 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-11-03 04:17:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:17:43,524 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:17:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:43,525 INFO L225 Difference]: With dead ends: 17 [2021-11-03 04:17:43,525 INFO L226 Difference]: Without dead ends: 13 [2021-11-03 04:17:43,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 124.2s TimeCoverageRelationStatistics Valid=71, Invalid=119, Unknown=38, NotChecked=702, Total=930 [2021-11-03 04:17:43,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-03 04:17:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-03 04:17:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-03 04:17:43,530 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-11-03 04:17:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:43,530 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-03 04:17:43,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:43,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-03 04:17:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:17:43,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:43,531 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:43,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:43,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-03 04:17:43,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-03 04:17:44,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:17:44,141 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:17:44,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 3 times [2021-11-03 04:17:44,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:44,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417958991] [2021-11-03 04:17:44,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:17:44,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:44,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:44,143 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:44,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:17:44,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-03 04:17:44,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:17:44,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:17:44,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:07,228 WARN L207 SmtUtils]: Spent 8.17 s on a formula simplification that was a NOOP. DAG size: 17 [2021-11-03 04:18:20,131 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_38 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_38)))) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-03 04:19:01,873 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_38 .cse2))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_38)) (let ((.cse1 (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse1)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse2) .cse0))))) is different from false [2021-11-03 04:19:03,908 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_38 .cse2))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_38)) (let ((.cse1 (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse1)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse2) .cse0))))) is different from true [2021-11-03 04:19:19,964 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_38 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_38)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2021-11-03 04:19:21,996 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_38 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_38)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2021-11-03 04:19:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:21,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:19:40,659 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) is different from true [2021-11-03 04:19:54,817 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_40 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_40 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_40))))) is different from false [2021-11-03 04:19:56,856 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_40 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_40 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_40))))) is different from true [2021-11-03 04:20:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 11 not checked. [2021-11-03 04:20:51,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:20:51,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417958991] [2021-11-03 04:20:51,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417958991] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 04:20:51,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:20:51,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2021-11-03 04:20:51,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799498933] [2021-11-03 04:20:51,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:20:51,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:20:51,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:20:51,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=37, Unknown=12, NotChecked=80, Total=156 [2021-11-03 04:20:51,559 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:57,570 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-11-03 04:20:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:20:57,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 04:20:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:57,612 INFO L225 Difference]: With dead ends: 13 [2021-11-03 04:20:57,612 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:20:57,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=27, Invalid=37, Unknown=12, NotChecked=80, Total=156 [2021-11-03 04:20:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:20:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:20:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:20:57,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-11-03 04:20:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:57,613 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:20:57,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:20:57,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:20:57,615 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:20:57,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:20:57,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:20:57,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:20:57,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:20:57,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:20:57,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:21:06,335 WARN L207 SmtUtils]: Spent 8.43 s on a formula simplification that was a NOOP. DAG size: 17 [2021-11-03 04:21:06,358 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:21:06,359 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (and (= (fp.div currentRoundingMode v_ULTIMATE.start_main_~x~0_38 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))) ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_38)))) (= (fp.div currentRoundingMode ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))) ULTIMATE.start_main_~x1~0) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-03 04:21:06,359 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2021-11-03 04:21:06,359 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-11-03 04:21:06,359 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-11-03 04:21:06,359 INFO L853 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-11-03 04:21:06,360 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-03 04:21:06,360 INFO L853 garLoopResultBuilder]: At program point L30(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-11-03 04:21:06,360 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:21:06,360 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-03 04:21:06,360 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-03 04:21:06,363 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1] [2021-11-03 04:21:06,366 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:21:06,377 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-03 04:21:06,381 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-03 04:21:06,396 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] [2021-11-03 04:21:06,396 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] [2021-11-03 04:21:06,397 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-03 04:21:06,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] [2021-11-03 04:21:06,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] [2021-11-03 04:21:06,401 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-03 04:21:06,402 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-03 04:21:06,402 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-03 04:21:06,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:21:06 BoogieIcfgContainer [2021-11-03 04:21:06,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:21:06,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:21:06,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:21:06,404 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:21:06,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:19" (3/4) ... [2021-11-03 04:21:06,408 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:21:06,417 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-03 04:21:06,417 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-03 04:21:06,417 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:21:06,417 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:21:06,445 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists v_ULTIMATE.start_main_~x~0_38 : C_FLOAT :: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_38, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x && !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0_38)) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-03 04:21:06,461 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:21:06,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:21:06,466 INFO L168 Benchmark]: Toolchain (without parser) took 648193.41 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 42.8 MB in the beginning and 54.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:06,467 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 62.9 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:21:06,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.93 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 46.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:06,468 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.83 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:06,468 INFO L168 Benchmark]: Boogie Preprocessor took 55.45 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 44.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:21:06,469 INFO L168 Benchmark]: RCFGBuilder took 713.30 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 35.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:06,470 INFO L168 Benchmark]: TraceAbstraction took 646974.30 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 35.0 MB in the beginning and 57.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:06,470 INFO L168 Benchmark]: Witness Printer took 57.66 ms. Allocated memory is still 75.5 MB. Free memory was 56.4 MB in the beginning and 54.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:06,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 62.9 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.93 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 46.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.83 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.45 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 44.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 713.30 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 35.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 646974.30 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 35.0 MB in the beginning and 57.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. * Witness Printer took 57.66 ms. Allocated memory is still 75.5 MB. Free memory was 56.4 MB in the beginning and 54.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 646.8s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 73.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 16 SDslu, 46 SDs, 0 SdLazy, 78 SolverSat, 12 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 37.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 26 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 220.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, InterpolantAutomatonStates: 29, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 32 HoareAnnotationTreeSize, 3 FomulaSimplifications, 869 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 8.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 15.0s SatisfiabilityAnalysisTime, 547.6s InterpolantComputationTime, 75 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 134 ConstructedInterpolants, 10 QuantifiedInterpolants, 2309 SizeOfPredicates, 39 NumberOfNonLiveVariables, 275 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 31/150 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-11-03 04:21:06,489 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-03 04:21:06,489 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2021-11-03 04:21:06,490 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] [2021-11-03 04:21:06,490 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] [2021-11-03 04:21:06,490 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-03 04:21:06,491 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] [2021-11-03 04:21:06,495 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_38,QUANTIFIED] [2021-11-03 04:21:06,495 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\exists v_ULTIMATE.start_main_~x~0_38 : C_FLOAT :: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_38, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x && !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0_38)) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 13]: Loop Invariant [2021-11-03 04:21:06,496 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-03 04:21:06,496 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-11-03 04:21:06,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd172575-a7c2-4905-878d-59b0d9033034/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE