./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_tight.c --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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 ................................................................................................................................................................................................................................................... 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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:49:24,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:49:24,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:49:24,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:49:24,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:49:24,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:49:24,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:49:24,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:49:24,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:49:24,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:49:24,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:49:24,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:49:24,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:49:24,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:49:24,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:49:24,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:49:24,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:49:24,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:49:24,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:49:24,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:49:24,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:49:24,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:49:24,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:49:24,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:49:24,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:49:24,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:49:24,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:49:24,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:49:24,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:49:24,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:49:24,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:49:24,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:49:24,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:49:24,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:49:24,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:49:24,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:49:24,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:49:24,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:49:24,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:49:24,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:49:24,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:49:24,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:49:24,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:49:24,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:49:24,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:49:24,211 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:49:24,211 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:49:24,211 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:49:24,212 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:49:24,212 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:49:24,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:49:24,212 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:49:24,213 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:49:24,213 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:49:24,213 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:49:24,213 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:49:24,213 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:49:24,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:49:24,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:49:24,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:49:24,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:49:24,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:49:24,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:49:24,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:49:24,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:49:24,216 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:49:24,216 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:49:24,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:49:24,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:49:24,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:49:24,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:49:24,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:49:24,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:49:24,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:49:24,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:49:24,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:49:24,219 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:49:24,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:49:24,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:49:24,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:49:24,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:49:24,220 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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2021-10-29 05:49:24,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:49:24,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:49:24,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:49:24,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:49:24,510 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:49:24,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-10-29 05:49:24,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data/abc172325/95567e5f36924007980516fb2083ecd2/FLAG61c41a842 [2021-10-29 05:49:25,099 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:49:25,100 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-10-29 05:49:25,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data/abc172325/95567e5f36924007980516fb2083ecd2/FLAG61c41a842 [2021-10-29 05:49:25,451 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data/abc172325/95567e5f36924007980516fb2083ecd2 [2021-10-29 05:49:25,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:49:25,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:49:25,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:49:25,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:49:25,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:49:25,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2aa8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25, skipping insertion in model container [2021-10-29 05:49:25,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:49:25,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:49:25,680 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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2021-10-29 05:49:25,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:49:25,705 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:49:25,724 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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2021-10-29 05:49:25,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:49:25,745 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:49:25,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25 WrapperNode [2021-10-29 05:49:25,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:49:25,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:49:25,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:49:25,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:49:25,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:49:25,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:49:25,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:49:25,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:49:25,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:49:25,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:49:25,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:49:25,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:49:25,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (1/1) ... [2021-10-29 05:49:25,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:49:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:49:25,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:49:25,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:49:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:49:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:49:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:49:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:49:26,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:49:26,176 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:49:26,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:26 BoogieIcfgContainer [2021-10-29 05:49:26,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:49:26,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:49:26,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:49:26,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:49:26,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:49:25" (1/3) ... [2021-10-29 05:49:26,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a52be06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:49:26, skipping insertion in model container [2021-10-29 05:49:26,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:25" (2/3) ... [2021-10-29 05:49:26,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a52be06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:49:26, skipping insertion in model container [2021-10-29 05:49:26,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:26" (3/3) ... [2021-10-29 05:49:26,189 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2021-10-29 05:49:26,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:49:26,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:49:26,302 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:49:26,326 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 05:49:26,342 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:49:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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 05:49:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:49:26,374 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:49:26,375 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:49:26,376 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:49:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:49:26,394 INFO L85 PathProgramCache]: Analyzing trace with hash 67880, now seen corresponding path program 1 times [2021-10-29 05:49:26,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:49:26,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47105781] [2021-10-29 05:49:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:49:26,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:49:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:49:26,593 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:49:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:49:26,693 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:49:26,697 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:49:26,698 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:49:26,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:49:26,704 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:49:26,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:49:26,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:49:26 BoogieIcfgContainer [2021-10-29 05:49:26,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:49:26,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:49:26,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:49:26,732 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:49:26,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:26" (3/4) ... [2021-10-29 05:49:26,736 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:49:26,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:49:26,742 INFO L168 Benchmark]: Toolchain (without parser) took 1275.50 ms. Allocated memory is still 127.9 MB. Free memory was 95.3 MB in the beginning and 76.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:26,743 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:49:26,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.93 ms. Allocated memory is still 127.9 MB. Free memory was 95.1 MB in the beginning and 104.2 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:26,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.64 ms. Allocated memory is still 127.9 MB. Free memory was 104.2 MB in the beginning and 102.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:26,749 INFO L168 Benchmark]: Boogie Preprocessor took 18.43 ms. Allocated memory is still 127.9 MB. Free memory was 102.9 MB in the beginning and 102.0 MB in the end (delta: 918.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:49:26,750 INFO L168 Benchmark]: RCFGBuilder took 377.02 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 89.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:26,751 INFO L168 Benchmark]: TraceAbstraction took 546.90 ms. Allocated memory is still 127.9 MB. Free memory was 89.5 MB in the beginning and 76.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:26,759 INFO L168 Benchmark]: Witness Printer took 6.14 ms. Allocated memory is still 127.9 MB. Free memory was 76.6 MB in the beginning and 76.2 MB in the end (delta: 422.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:26,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.93 ms. Allocated memory is still 127.9 MB. Free memory was 95.1 MB in the beginning and 104.2 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.64 ms. Allocated memory is still 127.9 MB. Free memory was 104.2 MB in the beginning and 102.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.43 ms. Allocated memory is still 127.9 MB. Free memory was 102.9 MB in the beginning and 102.0 MB in the end (delta: 918.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 377.02 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 89.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 546.90 ms. Allocated memory is still 127.9 MB. Free memory was 89.5 MB in the beginning and 76.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.14 ms. Allocated memory is still 127.9 MB. Free memory was 76.6 MB in the beginning and 76.2 MB in the end (delta: 422.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 23. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L14] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:49:26,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:49:29,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:49:29,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:49:29,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:49:29,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:49:29,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:49:29,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:49:29,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:49:29,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:49:29,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:49:29,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:49:29,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:49:29,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:49:29,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:49:29,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:49:29,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:49:29,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:49:29,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:49:29,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:49:29,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:49:29,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:49:29,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:49:29,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:49:29,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:49:29,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:49:29,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:49:29,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:49:29,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:49:29,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:49:29,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:49:29,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:49:29,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:49:29,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:49:29,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:49:29,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:49:29,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:49:29,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:49:29,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:49:29,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:49:29,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:49:29,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:49:29,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:49:29,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:49:29,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:49:29,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:49:29,556 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:49:29,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:49:29,557 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:49:29,557 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:49:29,557 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:49:29,558 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:49:29,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:49:29,560 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:49:29,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:49:29,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:49:29,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:49:29,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:49:29,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:49:29,562 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:49:29,562 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:49:29,562 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:49:29,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:49:29,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:49:29,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:49:29,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:49:29,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:49:29,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:49:29,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:49:29,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:49:29,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:49:29,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:49:29,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:49:29,565 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:49:29,566 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:49:29,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:49:29,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:49:29,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:49:29,567 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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2021-10-29 05:49:29,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:49:29,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:49:30,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:49:30,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:49:30,004 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:49:30,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-10-29 05:49:30,082 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data/482e54282/d5772686e5834459a5a8ece912a03f78/FLAG1a2ba1dd3 [2021-10-29 05:49:30,623 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:49:30,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-10-29 05:49:30,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data/482e54282/d5772686e5834459a5a8ece912a03f78/FLAG1a2ba1dd3 [2021-10-29 05:49:30,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/data/482e54282/d5772686e5834459a5a8ece912a03f78 [2021-10-29 05:49:31,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:49:31,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:49:31,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:49:31,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:49:31,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:49:31,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:49:30" (1/1) ... [2021-10-29 05:49:31,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a92f1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31, skipping insertion in model container [2021-10-29 05:49:31,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:49:30" (1/1) ... [2021-10-29 05:49:31,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:49:31,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:49:31,219 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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2021-10-29 05:49:31,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:49:31,267 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:49:31,334 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_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2021-10-29 05:49:31,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:49:31,373 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:49:31,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31 WrapperNode [2021-10-29 05:49:31,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:49:31,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:49:31,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:49:31,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:49:31,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:49:31,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:49:31,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:49:31,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:49:31,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:49:31,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:49:31,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:49:31,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:49:31,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (1/1) ... [2021-10-29 05:49:31,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:49:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:49:31,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:49:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:49:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:49:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:49:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:49:31,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:49:38,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:49:38,033 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:49:38,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:38 BoogieIcfgContainer [2021-10-29 05:49:38,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:49:38,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:49:38,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:49:38,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:49:38,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:49:30" (1/3) ... [2021-10-29 05:49:38,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e48c57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:49:38, skipping insertion in model container [2021-10-29 05:49:38,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:31" (2/3) ... [2021-10-29 05:49:38,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e48c57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:49:38, skipping insertion in model container [2021-10-29 05:49:38,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:38" (3/3) ... [2021-10-29 05:49:38,046 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2021-10-29 05:49:38,052 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:49:38,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:49:38,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:49:38,122 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 05:49:38,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:49:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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 05:49:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:49:38,148 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:49:38,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:49:38,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:49:38,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:49:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2021-10-29 05:49:38,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:49:38,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19814380] [2021-10-29 05:49:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:49:38,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:49:38,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:49:38,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:49:38,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:49:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:49:38,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:49:38,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:49:39,102 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 05:49:39,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:49:39,151 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 05:49:39,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:49:39,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19814380] [2021-10-29 05:49:39,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19814380] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:49:39,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:49:39,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:49:39,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738620805] [2021-10-29 05:49:39,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:49:39,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:49:39,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:49:39,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:49:39,179 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:49:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:49:39,194 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-29 05:49:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:49:39,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:49:39,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:49:39,205 INFO L225 Difference]: With dead ends: 23 [2021-10-29 05:49:39,205 INFO L226 Difference]: Without dead ends: 9 [2021-10-29 05:49:39,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 05:49:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-29 05:49:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-29 05:49:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:49:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-29 05:49:39,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2021-10-29 05:49:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:49:39,242 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-29 05:49:39,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:49:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-29 05:49:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:49:39,243 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:49:39,243 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:49:39,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:49:39,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:49:39,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:49:39,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:49:39,470 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2021-10-29 05:49:39,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:49:39,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640483121] [2021-10-29 05:49:39,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:49:39,471 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:49:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:49:39,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:49:39,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:49:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:49:40,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:49:40,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:50:04,092 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:51:15,162 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (let ((.cse0 (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse1)))) is different from false [2021-10-29 05:51:17,251 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (let ((.cse0 (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse1)))) is different from true [2021-10-29 05:51:34,114 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0)))) is different from false [2021-10-29 05:51:36,200 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0)))) is different from true [2021-10-29 05:51:36,201 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 05:51:36,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:50,632 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) is different from false [2021-10-29 05:51:52,757 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) is different from true [2021-10-29 05:52:13,573 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from false [2021-10-29 05:52:15,700 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-10-29 05:52:54,134 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) is different from false [2021-10-29 05:52:56,251 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) is different from true [2021-10-29 05:52:56,252 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 05:52:56,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:52:56,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640483121] [2021-10-29 05:52:56,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640483121] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:52:56,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:52:56,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-29 05:52:56,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674172532] [2021-10-29 05:52:56,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:52:56,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:52:56,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:52:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=35, Unknown=15, NotChecked=80, Total=156 [2021-10-29 05:52:56,258 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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 05:53:00,470 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:53:02,598 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 05:53:04,727 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (or (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) .cse2) (let ((.cse3 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse4 (fp.leq c_ULTIMATE.start_main_~x~0 .cse1))) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse3 .cse4) (and (or (not .cse3) (not .cse4)) .cse2))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-29 05:53:07,482 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-10-29 05:53:09,606 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-10-29 05:53:11,721 WARN L838 $PredicateComparison]: unable to prove that (and (fp.geq c_ULTIMATE.start_main_~y~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= c_ULTIMATE.start_main_~y~0 (fp.div c_currentRoundingMode ULTIMATE.start_main_~x~0 .cse0)) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0))))) is different from false [2021-10-29 05:53:21,401 WARN L207 SmtUtils]: Spent 6.53 s on a formula simplification that was a NOOP. DAG size: 24 [2021-10-29 05:53:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:53:21,425 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-29 05:53:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:53:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:53:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:53:21,427 INFO L225 Difference]: With dead ends: 13 [2021-10-29 05:53:21,427 INFO L226 Difference]: Without dead ends: 9 [2021-10-29 05:53:21,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 62.1s TimeCoverageRelationStatistics Valid=37, Invalid=49, Unknown=22, NotChecked=198, Total=306 [2021-10-29 05:53:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-29 05:53:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-29 05:53:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:53:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-29 05:53:21,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-29 05:53:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:53:21,433 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-29 05:53:21,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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 05:53:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-29 05:53:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:53:21,434 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:53:21,434 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:53:21,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:53:21,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:53:21,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:53:21,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:53:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash 176701705, now seen corresponding path program 1 times [2021-10-29 05:53:21,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:53:21,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262509631] [2021-10-29 05:53:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:53:21,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:53:21,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:53:21,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:53:21,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:53:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:53:22,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:53:22,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:53:54,238 WARN L207 SmtUtils]: Spent 11.57 s on a formula simplification that was a NOOP. DAG size: 14 [2021-10-29 05:54:12,415 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_ULTIMATE.start_main_~y~0 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:55:59,094 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (let ((.cse0 (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from false [2021-10-29 05:56:01,131 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (let ((.cse0 (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from true [2021-10-29 05:56:21,865 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from false [2021-10-29 05:56:23,902 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from true [2021-10-29 05:56:23,903 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 05:56:23,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:56:35,472 WARN L838 $PredicateComparison]: unable to prove that (or (fp.leq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-29 05:56:37,514 WARN L860 $PredicateComparison]: unable to prove that (or (fp.leq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-29 05:56:46,552 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from false [2021-10-29 05:56:48,596 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from true [2021-10-29 05:57:03,094 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) is different from false [2021-10-29 05:57:05,140 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) is different from true [2021-10-29 05:57:23,764 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) is different from false [2021-10-29 05:57:25,811 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) is different from true [2021-10-29 05:57:25,812 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 05:57:25,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:25,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262509631] [2021-10-29 05:57:25,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262509631] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:25,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:25,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-29 05:57:25,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742812125] [2021-10-29 05:57:25,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 05:57:25,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:25,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 05:57:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=37, Unknown=16, NotChecked=126, Total=210 [2021-10-29 05:57:25,816 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 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 05:57:30,014 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:57:32,377 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) .cse1)) (let ((.cse2 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse3 (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse2 .cse3) (and (or (not .cse2) (not .cse3)) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-29 05:57:34,424 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) .cse1)) (let ((.cse2 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse3 (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse2 .cse3) (and (or (not .cse2) (not .cse3)) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-29 05:57:36,473 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:57:39,943 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (and (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0)) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-29 05:57:41,985 WARN L838 $PredicateComparison]: unable to prove that (and (fp.geq c_ULTIMATE.start_main_~y~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_ULTIMATE.start_main_~y~0 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:57:44,035 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (let ((.cse0 (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))))) is different from false [2021-10-29 05:57:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:44,041 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-29 05:57:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:57:44,041 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:57:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:44,042 INFO L225 Difference]: With dead ends: 9 [2021-10-29 05:57:44,042 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:57:44,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.7s TimeCoverageRelationStatistics Valid=43, Invalid=42, Unknown=23, NotChecked=312, Total=420 [2021-10-29 05:57:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:57:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:57:44,043 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 05:57:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:57:44,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-29 05:57:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:44,044 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:57:44,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 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 05:57:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:57:44,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:57:44,047 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:57:44,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:44,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:44,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:57:44,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:44,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:44,290 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:57:44,291 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-29 05:57:44,291 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 05:57:44,291 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:57:44,291 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 05:57:44,292 INFO L860 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: true [2021-10-29 05:57:44,292 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 25) no Hoare annotation was computed. [2021-10-29 05:57:44,292 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-29 05:57:44,292 INFO L857 garLoopResultBuilder]: For program point L24-2(lines 24 25) no Hoare annotation was computed. [2021-10-29 05:57:44,293 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-29 05:57:44,293 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-29 05:57:44,293 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-29 05:57:44,293 INFO L860 garLoopResultBuilder]: At program point L14-3(line 14) the Hoare annotation is: true [2021-10-29 05:57:44,296 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:57:44,298 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:57:44,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:57:44 BoogieIcfgContainer [2021-10-29 05:57:44,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:57:44,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:57:44,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:57:44,309 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:57:44,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:38" (3/4) ... [2021-10-29 05:57:44,312 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:57:44,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-29 05:57:44,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:57:44,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:57:44,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:57:44,353 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:57:44,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:57:44,355 INFO L168 Benchmark]: Toolchain (without parser) took 493350.28 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 46.2 MB in the beginning and 39.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:44,355 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:57:44,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.64 ms. Allocated memory is still 67.1 MB. Free memory was 46.1 MB in the beginning and 49.9 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:44,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.05 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 48.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:57:44,357 INFO L168 Benchmark]: Boogie Preprocessor took 64.26 ms. Allocated memory is still 67.1 MB. Free memory was 48.3 MB in the beginning and 47.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:57:44,357 INFO L168 Benchmark]: RCFGBuilder took 6540.26 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 37.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:44,358 INFO L168 Benchmark]: TraceAbstraction took 486264.51 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 37.3 MB in the beginning and 41.1 MB in the end (delta: -3.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:44,358 INFO L168 Benchmark]: Witness Printer took 50.30 ms. Allocated memory is still 90.2 MB. Free memory was 41.1 MB in the beginning and 39.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:44,361 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 67.1 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 372.64 ms. Allocated memory is still 67.1 MB. Free memory was 46.1 MB in the beginning and 49.9 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.05 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 48.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.26 ms. Allocated memory is still 67.1 MB. Free memory was 48.3 MB in the beginning and 47.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6540.26 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 37.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 486264.51 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 37.3 MB in the beginning and 41.1 MB in the end (delta: -3.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 50.30 ms. Allocated memory is still 90.2 MB. Free memory was 41.1 MB in the beginning and 39.0 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: 14]: 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 486.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 43.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 9 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 22 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 125.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 440.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 8 QuantifiedInterpolants, 574 SizeOfPredicates, 14 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:57:44,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45e63c7-a81a-4ed0-9843-6560eb6b75d9/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...