./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG --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 dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 ....................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG --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 dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:46:21,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:46:21,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:46:22,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:46:22,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:46:22,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:46:22,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:46:22,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:46:22,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:46:22,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:46:22,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:46:22,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:46:22,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:46:22,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:46:22,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:46:22,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:46:22,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:46:22,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:46:22,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:46:22,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:46:22,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:46:22,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:46:22,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:46:22,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:46:22,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:46:22,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:46:22,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:46:22,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:46:22,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:46:22,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:46:22,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:46:22,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:46:22,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:46:22,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:46:22,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:46:22,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:46:22,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:46:22,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:46:22,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:46:22,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:46:22,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:46:22,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:46:22,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:46:22,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:46:22,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:46:22,181 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:46:22,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:46:22,181 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:46:22,182 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:46:22,182 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:46:22,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:46:22,183 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:46:22,184 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:46:22,184 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:46:22,185 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:46:22,185 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:46:22,185 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:46:22,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:46:22,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:46:22,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:46:22,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:46:22,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:46:22,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:46:22,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:46:22,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:46:22,188 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:46:22,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:46:22,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:46:22,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:46:22,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:46:22,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:46:22,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:46:22,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:46:22,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:46:22,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:46:22,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:46:22,194 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:46:22,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:46:22,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:46:22,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:46:22,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:46:22,195 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_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 [2021-10-29 05:46:22,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:46:22,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:46:22,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:46:22,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:46:22,607 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:46:22,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-10-29 05:46:22,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data/6751a60ff/37b9b38f3755459caf47f5d976b84697/FLAGe21ae849e [2021-10-29 05:46:23,366 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:46:23,367 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-10-29 05:46:23,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data/6751a60ff/37b9b38f3755459caf47f5d976b84697/FLAGe21ae849e [2021-10-29 05:46:23,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data/6751a60ff/37b9b38f3755459caf47f5d976b84697 [2021-10-29 05:46:23,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:46:23,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:46:23,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:46:23,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:46:23,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:46:23,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:46:23" (1/1) ... [2021-10-29 05:46:23,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3859e79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:23, skipping insertion in model container [2021-10-29 05:46:23,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:46:23" (1/1) ... [2021-10-29 05:46:23,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:46:23,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:46:24,500 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1694) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1414) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2355) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:712) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2355) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:713) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:712) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:174) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:676) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1421) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1365) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1052) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1436) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3224) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:580) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-29 05:46:24,506 INFO L168 Benchmark]: Toolchain (without parser) took 935.87 ms. Allocated memory is still 115.3 MB. Free memory was 71.3 MB in the beginning and 85.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:46:24,508 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 115.3 MB. Free memory was 89.2 MB in the beginning and 89.1 MB in the end (delta: 66.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:46:24,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 932.57 ms. Allocated memory is still 115.3 MB. Free memory was 71.1 MB in the beginning and 85.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:46:24,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 115.3 MB. Free memory was 89.2 MB in the beginning and 89.1 MB in the end (delta: 66.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 932.57 ms. Allocated memory is still 115.3 MB. Free memory was 71.1 MB in the beginning and 85.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:46:27,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:46:27,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:46:27,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:46:27,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:46:27,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:46:27,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:46:27,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:46:27,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:46:27,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:46:27,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:46:27,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:46:27,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:46:27,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:46:27,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:46:27,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:46:27,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:46:27,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:46:27,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:46:27,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:46:27,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:46:27,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:46:27,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:46:27,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:46:27,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:46:27,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:46:27,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:46:27,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:46:27,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:46:27,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:46:27,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:46:27,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:46:27,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:46:27,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:46:27,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:46:27,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:46:27,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:46:27,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:46:27,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:46:27,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:46:27,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:46:27,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:46:27,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:46:27,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:46:27,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:46:27,590 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:46:27,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:46:27,591 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:46:27,591 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:46:27,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:46:27,591 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:46:27,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:46:27,593 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:46:27,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:46:27,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:46:27,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:46:27,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:46:27,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:46:27,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:46:27,595 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:46:27,595 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:46:27,596 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:46:27,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:46:27,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:46:27,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:46:27,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:46:27,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:46:27,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:46:27,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:46:27,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:46:27,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:46:27,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:46:27,599 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:46:27,599 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:46:27,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:46:27,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:46:27,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:46:27,601 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_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 [2021-10-29 05:46:28,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:46:28,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:46:28,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:46:28,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:46:28,089 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:46:28,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-10-29 05:46:28,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data/c4166c955/7d7d601df14646ddb0e3d2bd315bc708/FLAGe945041cc [2021-10-29 05:46:29,019 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:46:29,020 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-10-29 05:46:29,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data/c4166c955/7d7d601df14646ddb0e3d2bd315bc708/FLAGe945041cc [2021-10-29 05:46:29,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/data/c4166c955/7d7d601df14646ddb0e3d2bd315bc708 [2021-10-29 05:46:29,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:46:29,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:46:29,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:46:29,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:46:29,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:46:29,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:46:29" (1/1) ... [2021-10-29 05:46:29,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc94894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:29, skipping insertion in model container [2021-10-29 05:46:29,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:46:29" (1/1) ... [2021-10-29 05:46:29,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:46:29,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:46:29,962 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_9076d44a-5179-4993-8b1f-d98a4a13a9ef/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2021-10-29 05:46:29,975 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_9076d44a-5179-4993-8b1f-d98a4a13a9ef/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2021-10-29 05:46:29,976 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_9076d44a-5179-4993-8b1f-d98a4a13a9ef/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2021-10-29 05:46:29,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:46:29,994 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:46:30,038 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_9076d44a-5179-4993-8b1f-d98a4a13a9ef/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2021-10-29 05:46:30,057 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_9076d44a-5179-4993-8b1f-d98a4a13a9ef/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2021-10-29 05:46:30,058 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_9076d44a-5179-4993-8b1f-d98a4a13a9ef/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2021-10-29 05:46:30,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:46:30,254 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:46:30,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30 WrapperNode [2021-10-29 05:46:30,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:46:30,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:46:30,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:46:30,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:46:30,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:46:30,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:46:30,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:46:30,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:46:30,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:46:30,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:46:30,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:46:30,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:46:30,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (1/1) ... [2021-10-29 05:46:30,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:46:30,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:46:30,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:46:30,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:46:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:46:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:46:30,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:46:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:46:33,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:46:33,199 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-29 05:46:33,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:46:33 BoogieIcfgContainer [2021-10-29 05:46:33,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:46:33,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:46:33,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:46:33,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:46:33,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:46:29" (1/3) ... [2021-10-29 05:46:33,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e7eacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:46:33, skipping insertion in model container [2021-10-29 05:46:33,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:46:30" (2/3) ... [2021-10-29 05:46:33,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e7eacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:46:33, skipping insertion in model container [2021-10-29 05:46:33,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:46:33" (3/3) ... [2021-10-29 05:46:33,212 INFO L111 eAbstractionObserver]: Analyzing ICFG float-div1.i [2021-10-29 05:46:33,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:46:33,219 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 05:46:33,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:46:33,283 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 [2021-10-29 05:46:33,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:46:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 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) [2021-10-29 05:46:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:46:33,313 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:46:33,314 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:46:33,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:46:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:46:33,322 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-29 05:46:33,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:46:33,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882915985] [2021-10-29 05:46:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:46:33,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:46:33,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:46:33,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:46:33,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:46:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:46:34,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:46:34,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:46:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:46:34,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:46:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:46:34,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:46:34,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882915985] [2021-10-29 05:46:34,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882915985] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:46:34,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:46:34,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:46:34,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992760779] [2021-10-29 05:46:34,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:46:34,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:46:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:46:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:46:34,278 INFO L87 Difference]: Start difference. First operand has 20 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 05:46:34,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:46:34,295 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-10-29 05:46:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:46:34,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 [2021-10-29 05:46:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:46:34,307 INFO L225 Difference]: With dead ends: 37 [2021-10-29 05:46:34,307 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 05:46:34,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:46:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 05:46:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-29 05:46:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 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) [2021-10-29 05:46:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-10-29 05:46:34,341 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 6 [2021-10-29 05:46:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:46:34,342 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-10-29 05:46:34,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 05:46:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-10-29 05:46:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:46:34,343 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:46:34,343 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:46:34,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-29 05:46:34,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:46:34,544 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:46:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:46:34,546 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-29 05:46:34,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:46:34,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623135508] [2021-10-29 05:46:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:46:34,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:46:34,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:46:34,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:46:34,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:46:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:46:35,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:46:35,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:46:51,671 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (= c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))))) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:47:06,791 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven ULTIMATE.start_inductiveStepHunt_~startState (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) is different from false [2021-10-29 05:47:08,849 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven ULTIMATE.start_inductiveStepHunt_~startState (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) is different from true [2021-10-29 05:47:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:08,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:47:15,187 WARN L838 $PredicateComparison]: unable to prove that (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) is different from false [2021-10-29 05:47:17,273 WARN L860 $PredicateComparison]: unable to prove that (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) is different from true [2021-10-29 05:47:27,926 WARN L838 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-29 05:47:30,012 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-29 05:48:12,421 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) is different from false [2021-10-29 05:48:14,514 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) is different from true [2021-10-29 05:48:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:14,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:48:14,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623135508] [2021-10-29 05:48:14,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623135508] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:14,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:14,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-29 05:48:14,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930258021] [2021-10-29 05:48:14,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 05:48:14,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:48:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 05:48:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2021-10-29 05:48:14,520 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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) [2021-10-29 05:48:16,621 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:48:18,709 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 05:48:20,801 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState))) (or (and (not .cse0) .cse1) (and .cse1 (fp.isInfinite c_ULTIMATE.start_inductiveStepHunt_~startState)) (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)))) (or .cse1 (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-29 05:48:22,911 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState))) (or (and (not .cse0) .cse1) (and .cse1 (fp.isInfinite c_ULTIMATE.start_inductiveStepHunt_~startState)) (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)))) (or .cse1 (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-29 05:48:25,014 WARN L838 $PredicateComparison]: unable to prove that (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)) is different from false [2021-10-29 05:48:27,111 WARN L860 $PredicateComparison]: unable to prove that (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)) is different from true [2021-10-29 05:48:29,200 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (= c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))))) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.gt c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-29 05:48:30,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:30,379 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-10-29 05:48:30,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:48:30,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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) Word has length 6 [2021-10-29 05:48:30,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:30,381 INFO L225 Difference]: With dead ends: 16 [2021-10-29 05:48:30,382 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 05:48:30,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=29, Invalid=21, Unknown=16, NotChecked=144, Total=210 [2021-10-29 05:48:30,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 05:48:30,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-29 05:48:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 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) [2021-10-29 05:48:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-10-29 05:48:30,387 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 6 [2021-10-29 05:48:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:30,387 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-10-29 05:48:30,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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) [2021-10-29 05:48:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-10-29 05:48:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:48:30,389 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:30,389 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:30,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:48:30,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:48:30,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:48:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1929124086, now seen corresponding path program 1 times [2021-10-29 05:48:30,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:48:30,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129543972] [2021-10-29 05:48:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:30,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:48:30,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:48:30,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:48:30,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:48:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:31,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:48:31,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:48:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:31,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:48:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:31,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:48:31,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129543972] [2021-10-29 05:48:31,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129543972] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:31,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:31,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 05:48:31,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844487789] [2021-10-29 05:48:31,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:48:31,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:48:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:48:31,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:48:31,604 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-10-29 05:48:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:35,480 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-10-29 05:48:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:48:35,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 10 [2021-10-29 05:48:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:35,481 INFO L225 Difference]: With dead ends: 14 [2021-10-29 05:48:35,481 INFO L226 Difference]: Without dead ends: 12 [2021-10-29 05:48:35,482 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:48:35,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-29 05:48:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-29 05:48:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 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) [2021-10-29 05:48:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-29 05:48:35,485 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2021-10-29 05:48:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:35,486 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-29 05:48:35,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-10-29 05:48:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-29 05:48:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:48:35,487 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:35,487 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:35,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:48:35,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:48:35,693 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:48:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash 326699576, now seen corresponding path program 1 times [2021-10-29 05:48:35,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:48:35,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491399914] [2021-10-29 05:48:35,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:35,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:48:35,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:48:35,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:48:35,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:48:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:36,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:48:36,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:48:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:45,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:48:51,647 WARN L838 $PredicateComparison]: unable to prove that (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_simplifiedInductiveStepHunt_~target~1 c_ULTIMATE.start_simplifiedInductiveStepHunt_~nextState) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) is different from false [2021-10-29 05:49:15,712 WARN L207 SmtUtils]: Spent 7.10 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:49:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:49:16,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:49:16,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491399914] [2021-10-29 05:49:16,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491399914] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:49:16,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:49:16,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 05:49:16,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095561915] [2021-10-29 05:49:16,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:49:16,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:49:16,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:49:16,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=37, Unknown=2, NotChecked=12, Total=72 [2021-10-29 05:49:16,140 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2021-10-29 05:49:36,000 WARN L207 SmtUtils]: Spent 7.12 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-10-29 05:49:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:49:36,366 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-29 05:49:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:49:36,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 11 [2021-10-29 05:49:36,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:49:36,411 INFO L225 Difference]: With dead ends: 12 [2021-10-29 05:49:36,411 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:49:36,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=36, Invalid=56, Unknown=2, NotChecked=16, Total=110 [2021-10-29 05:49:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:49:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:49:36,413 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) [2021-10-29 05:49:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:49:36,413 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-29 05:49:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:49:36,413 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:49:36,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2021-10-29 05:49:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:49:36,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:49:36,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:49:36,418 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:49:36,418 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:49:36,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:49:36,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:49:36,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:49:36,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:49:36,665 INFO L857 garLoopResultBuilder]: For program point L2-1(lines 2 4) no Hoare annotation was computed. [2021-10-29 05:49:36,665 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:49:36,665 INFO L857 garLoopResultBuilder]: For program point L384(line 384) no Hoare annotation was computed. [2021-10-29 05:49:36,666 INFO L857 garLoopResultBuilder]: For program point L384-1(line 384) no Hoare annotation was computed. [2021-10-29 05:49:36,666 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2021-10-29 05:49:36,674 INFO L860 garLoopResultBuilder]: At program point L399(lines 394 400) the Hoare annotation is: true [2021-10-29 05:49:36,675 INFO L857 garLoopResultBuilder]: For program point L391(line 391) no Hoare annotation was computed. [2021-10-29 05:49:36,675 INFO L857 garLoopResultBuilder]: For program point L391-1(line 391) no Hoare annotation was computed. [2021-10-29 05:49:36,675 INFO L857 garLoopResultBuilder]: For program point L391-3(lines 387 393) no Hoare annotation was computed. [2021-10-29 05:49:36,676 INFO L857 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2021-10-29 05:49:36,676 INFO L857 garLoopResultBuilder]: For program point L3-2(line 3) no Hoare annotation was computed. [2021-10-29 05:49:36,676 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 05:49:36,677 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:49:36,677 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 05:49:36,678 INFO L857 garLoopResultBuilder]: For program point L377(lines 377 385) no Hoare annotation was computed. [2021-10-29 05:49:36,678 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2021-10-29 05:49:36,678 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 392) no Hoare annotation was computed. [2021-10-29 05:49:36,679 INFO L857 garLoopResultBuilder]: For program point L392(line 392) no Hoare annotation was computed. [2021-10-29 05:49:36,679 INFO L857 garLoopResultBuilder]: For program point L2(lines 2 4) no Hoare annotation was computed. [2021-10-29 05:49:36,679 INFO L857 garLoopResultBuilder]: For program point L386(lines 386 393) no Hoare annotation was computed. [2021-10-29 05:49:36,683 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-29 05:49:36,685 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:49:36,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:49:36 BoogieIcfgContainer [2021-10-29 05:49:36,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:49:36,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:49:36,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:49:36,695 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:49:36,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:46:33" (3/4) ... [2021-10-29 05:49:36,703 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:49:36,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-29 05:49:36,718 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:49:36,718 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:49:36,718 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:49:36,785 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:49:36,791 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:49:36,792 INFO L168 Benchmark]: Toolchain (without parser) took 187560.95 ms. Allocated memory was 50.3 MB in the beginning and 119.5 MB in the end (delta: 69.2 MB). Free memory was 25.4 MB in the beginning and 61.8 MB in the end (delta: -36.4 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:36,794 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:49:36,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1033.07 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 25.2 MB in the beginning and 48.3 MB in the end (delta: -23.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:36,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.86 ms. Allocated memory is still 67.1 MB. Free memory was 48.3 MB in the beginning and 45.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:36,799 INFO L168 Benchmark]: Boogie Preprocessor took 60.83 ms. Allocated memory is still 67.1 MB. Free memory was 45.9 MB in the beginning and 44.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:49:36,800 INFO L168 Benchmark]: RCFGBuilder took 2761.70 ms. Allocated memory is still 67.1 MB. Free memory was 44.5 MB in the beginning and 34.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:36,800 INFO L168 Benchmark]: TraceAbstraction took 183489.81 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 34.0 MB in the beginning and 63.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:36,804 INFO L168 Benchmark]: Witness Printer took 96.76 ms. Allocated memory is still 119.5 MB. Free memory was 63.9 MB in the beginning and 61.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:36,807 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 50.3 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1033.07 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 25.2 MB in the beginning and 48.3 MB in the end (delta: -23.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 110.86 ms. Allocated memory is still 67.1 MB. Free memory was 48.3 MB in the beginning and 45.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.83 ms. Allocated memory is still 67.1 MB. Free memory was 45.9 MB in the beginning and 44.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2761.70 ms. Allocated memory is still 67.1 MB. Free memory was 44.5 MB in the beginning and 34.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 183489.81 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 34.0 MB in the beginning and 63.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. * Witness Printer took 96.76 ms. Allocated memory is still 119.5 MB. Free memory was 63.9 MB in the beginning and 61.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 384]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 392]: 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, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 183.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 18 SDslu, 11 SDs, 0 SdLazy, 40 SolverSat, 0 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 12.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 71.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 139.4s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 5 QuantifiedInterpolants, 496 SizeOfPredicates, 15 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 394]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:49:37,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9076d44a-5179-4993-8b1f-d98a4a13a9ef/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...