./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur --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 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:46:25,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:46:25,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:46:25,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:46:25,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:46:25,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:46:25,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:46:25,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:46:25,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:46:25,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:46:25,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:46:25,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:46:25,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:46:25,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:46:25,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:46:25,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:46:25,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:46:25,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:46:25,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:46:25,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:46:25,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:46:25,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:46:25,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:46:25,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:46:25,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:46:25,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:46:25,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:46:25,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:46:25,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:46:25,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:46:25,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:46:25,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:46:25,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:46:25,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:46:25,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:46:25,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:46:25,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:46:25,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:46:25,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:46:25,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:46:25,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:46:25,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:46:25,694 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:46:25,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:46:25,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:46:25,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:46:25,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:46:25,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:46:25,696 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:46:25,697 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:46:25,697 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:46:25,697 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:46:25,698 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:46:25,698 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:46:25,699 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:46:25,699 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:46:25,699 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:46:25,699 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:46:25,699 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:46:25,700 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:46:25,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:46:25,701 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:46:25,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:46:25,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:46:25,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:46:25,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:46:25,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:46:25,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:46:25,702 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:46:25,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:46:25,703 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:46:25,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:46:25,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:46:25,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:46:25,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:46:25,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:46:25,704 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:46:25,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:46:25,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:46:25,705 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:46:25,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:46:25,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:46:25,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:46:25,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d [2022-11-26 00:46:26,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:46:26,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:46:26,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:46:26,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:46:26,162 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:46:26,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2022-11-26 00:46:29,455 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:46:29,667 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:46:29,668 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2022-11-26 00:46:29,675 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/data/92b6680fa/5a05add51e0242139dab7a3b37eea7e7/FLAGe207aa0bb [2022-11-26 00:46:29,704 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/data/92b6680fa/5a05add51e0242139dab7a3b37eea7e7 [2022-11-26 00:46:29,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:46:29,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:46:29,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:46:29,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:46:29,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:46:29,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:46:29" (1/1) ... [2022-11-26 00:46:29,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632efc00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:29, skipping insertion in model container [2022-11-26 00:46:29,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:46:29" (1/1) ... [2022-11-26 00:46:29,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:46:29,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:46:29,984 WARN L237 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_55918346-2986-4fba-8b62-e546d1eadc8e/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2022-11-26 00:46:30,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:46:30,018 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:46:30,054 WARN L237 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_55918346-2986-4fba-8b62-e546d1eadc8e/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2022-11-26 00:46:30,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:46:30,074 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:46:30,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30 WrapperNode [2022-11-26 00:46:30,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:46:30,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:46:30,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:46:30,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:46:30,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,139 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2022-11-26 00:46:30,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:46:30,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:46:30,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:46:30,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:46:30,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,186 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:46:30,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:46:30,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:46:30,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:46:30,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:46:30,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:30,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:46:30,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:46:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:46:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:46:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:46:30,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:46:30,372 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:46:30,374 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:46:30,512 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:46:30,564 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:46:30,564 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:46:30,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:46:30 BoogieIcfgContainer [2022-11-26 00:46:30,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:46:30,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:46:30,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:46:30,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:46:30,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:46:29" (1/3) ... [2022-11-26 00:46:30,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb8f8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:46:30, skipping insertion in model container [2022-11-26 00:46:30,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (2/3) ... [2022-11-26 00:46:30,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb8f8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:46:30, skipping insertion in model container [2022-11-26 00:46:30,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:46:30" (3/3) ... [2022-11-26 00:46:30,577 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div.i [2022-11-26 00:46:30,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:46:30,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:46:30,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:46:30,662 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e55d528, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:46:30,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:46:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:30,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:46:30,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:30,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:46:30,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:30,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2022-11-26 00:46:30,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:30,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411848894] [2022-11-26 00:46:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:30,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:46:30,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:46:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:46:30,843 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:46:30,845 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:46:30,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:46:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:46:30,854 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:46:30,859 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:46:30,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:46:30 BoogieIcfgContainer [2022-11-26 00:46:30,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:46:30,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:46:30,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:46:30,882 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:46:30,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:46:30" (3/4) ... [2022-11-26 00:46:30,887 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:46:30,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:46:30,889 INFO L158 Benchmark]: Toolchain (without parser) took 1177.81ms. Allocated memory is still 159.4MB. Free memory was 124.3MB in the beginning and 105.0MB in the end (delta: 19.3MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2022-11-26 00:46:30,889 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:46:30,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.62ms. Allocated memory is still 159.4MB. Free memory was 123.7MB in the beginning and 131.4MB in the end (delta: -7.7MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-11-26 00:46:30,891 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.86ms. Allocated memory is still 159.4MB. Free memory was 130.8MB in the beginning and 129.5MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:46:30,892 INFO L158 Benchmark]: Boogie Preprocessor took 38.81ms. Allocated memory is still 159.4MB. Free memory was 129.5MB in the beginning and 128.8MB in the end (delta: 658.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:46:30,893 INFO L158 Benchmark]: RCFGBuilder took 375.33ms. Allocated memory is still 159.4MB. Free memory was 128.8MB in the beginning and 119.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-26 00:46:30,894 INFO L158 Benchmark]: TraceAbstraction took 311.74ms. Allocated memory is still 159.4MB. Free memory was 118.3MB in the beginning and 105.0MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:46:30,894 INFO L158 Benchmark]: Witness Printer took 5.46ms. Allocated memory is still 159.4MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:46:30,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.62ms. Allocated memory is still 159.4MB. Free memory was 123.7MB in the beginning and 131.4MB in the end (delta: -7.7MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.86ms. Allocated memory is still 159.4MB. Free memory was 130.8MB in the beginning and 129.5MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.81ms. Allocated memory is still 159.4MB. Free memory was 129.5MB in the beginning and 128.8MB in the end (delta: 658.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 375.33ms. Allocated memory is still 159.4MB. Free memory was 128.8MB in the beginning and 119.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 311.74ms. Allocated memory is still 159.4MB. Free memory was 118.3MB in the beginning and 105.0MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.46ms. Allocated memory is still 159.4MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 23, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/2.5; VAL [x=1] [L23] COND FALSE !(x1 != x) [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:46:30,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur --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 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:46:33,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:46:33,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:46:33,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:46:33,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:46:33,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:46:33,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:46:33,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:46:33,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:46:33,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:46:33,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:46:33,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:46:33,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:46:33,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:46:33,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:46:33,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:46:33,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:46:33,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:46:33,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:46:33,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:46:33,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:46:33,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:46:33,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:46:33,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:46:33,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:46:33,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:46:33,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:46:33,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:46:33,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:46:33,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:46:33,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:46:33,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:46:33,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:46:33,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:46:33,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:46:33,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:46:33,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:46:33,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:46:33,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:46:33,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:46:33,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:46:33,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-26 00:46:33,750 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:46:33,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:46:33,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:46:33,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:46:33,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:46:33,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:46:33,753 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:46:33,753 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:46:33,754 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:46:33,754 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:46:33,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:46:33,755 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:46:33,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:46:33,756 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:46:33,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:46:33,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:46:33,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:46:33,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:46:33,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:46:33,758 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:46:33,758 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:46:33,758 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:46:33,759 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:46:33,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:46:33,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:46:33,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:46:33,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:46:33,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:46:33,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:46:33,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:46:33,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:46:33,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:46:33,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:46:33,762 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:46:33,762 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:46:33,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:46:33,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:46:33,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:46:33,763 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_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d [2022-11-26 00:46:34,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:46:34,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:46:34,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:46:34,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:46:34,228 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:46:34,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2022-11-26 00:46:37,758 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:46:37,960 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:46:37,960 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2022-11-26 00:46:37,967 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/data/b25d2c020/6590df5b37f44ce7905944c77dd603bf/FLAG7b016b4f3 [2022-11-26 00:46:37,982 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/data/b25d2c020/6590df5b37f44ce7905944c77dd603bf [2022-11-26 00:46:37,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:46:37,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:46:37,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:46:37,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:46:38,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:46:38,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:46:37" (1/1) ... [2022-11-26 00:46:38,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171d8d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38, skipping insertion in model container [2022-11-26 00:46:38,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:46:37" (1/1) ... [2022-11-26 00:46:38,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:46:38,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:46:38,225 WARN L237 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_55918346-2986-4fba-8b62-e546d1eadc8e/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2022-11-26 00:46:38,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:46:38,252 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:46:38,267 WARN L237 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_55918346-2986-4fba-8b62-e546d1eadc8e/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2022-11-26 00:46:38,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:46:38,288 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:46:38,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38 WrapperNode [2022-11-26 00:46:38,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:46:38,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:46:38,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:46:38,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:46:38,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,326 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-11-26 00:46:38,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:46:38,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:46:38,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:46:38,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:46:38,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,356 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:46:38,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:46:38,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:46:38,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:46:38,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (1/1) ... [2022-11-26 00:46:38,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:46:38,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:38,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:46:38,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:46:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:46:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:46:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:46:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:46:38,559 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:46:38,561 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:46:42,139 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:46:42,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:46:42,156 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:46:42,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:46:42 BoogieIcfgContainer [2022-11-26 00:46:42,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:46:42,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:46:42,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:46:42,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:46:42,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:46:37" (1/3) ... [2022-11-26 00:46:42,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a283b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:46:42, skipping insertion in model container [2022-11-26 00:46:42,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:38" (2/3) ... [2022-11-26 00:46:42,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a283b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:46:42, skipping insertion in model container [2022-11-26 00:46:42,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:46:42" (3/3) ... [2022-11-26 00:46:42,183 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div.i [2022-11-26 00:46:42,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:46:42,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:46:42,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:46:42,273 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@22a2a35d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:46:42,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:46:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:46:42,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:42,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:46:42,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:42,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:42,295 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-11-26 00:46:42,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:46:42,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968193626] [2022-11-26 00:46:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:42,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:46:42,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:46:42,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:46:42,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:46:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:42,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:46:42,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:46:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:46:51,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:46:51,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:46:51,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968193626] [2022-11-26 00:46:51,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968193626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:46:51,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:46:51,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:46:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475391830] [2022-11-26 00:46:51,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:46:51,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:46:51,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:46:51,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:46:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:46:51,365 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2022-11-26 00:46:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:57,689 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-11-26 00:46:58,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:46:58,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 00:46:58,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:58,451 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:46:58,451 INFO L226 Difference]: Without dead ends: 8 [2022-11-26 00:46:58,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:46:58,458 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:58,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-26 00:46:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-26 00:46:58,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-26 00:46:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-26 00:46:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-26 00:46:58,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-26 00:46:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:58,491 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-26 00:46:58,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2022-11-26 00:46:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-26 00:46:58,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:46:58,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:58,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:58,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:46:58,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:46:58,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:58,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-11-26 00:46:58,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:46:58,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359158475] [2022-11-26 00:46:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:58,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:46:58,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:46:58,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:46:58,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:46:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:59,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 00:46:59,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:08,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:14,878 WARN L837 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from false [2022-11-26 00:47:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-26 00:47:19,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:47:19,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359158475] [2022-11-26 00:47:19,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359158475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:47:19,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [781474962] [2022-11-26 00:47:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:19,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:47:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:47:19,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:47:19,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:47:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:20,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:47:20,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:41,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-26 00:47:46,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [781474962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:47:46,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468008926] [2022-11-26 00:47:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:46,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:47:46,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:47:46,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:47:46,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:48:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:20,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:48:20,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:26,807 WARN L859 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|) (= ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-11-26 00:48:43,276 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:48:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-26 00:48:43,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:49:07,543 WARN L859 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) is different from true [2022-11-26 00:49:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-26 00:49:09,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468008926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:49:09,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:49:09,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 6] total 15 [2022-11-26 00:49:09,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348356944] [2022-11-26 00:49:09,504 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:49:09,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 00:49:09,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:49:09,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 00:49:09,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=100, Unknown=3, NotChecked=66, Total=210 [2022-11-26 00:49:09,507 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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) [2022-11-26 00:49:11,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:49:16,776 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse3 (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|))) (.cse2 (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|))) (and (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode .cse1 .cse0)) (= .cse1 |c_ULTIMATE.start_main_~x~0#1|) (not .cse2) .cse3 (or .cse3 (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) .cse2) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2022-11-26 00:49:19,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:49:21,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:49:24,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:49:26,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:49:28,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:49:30,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:49:32,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:49:34,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:49:37,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:49:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:37,776 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-26 00:49:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:49:37,777 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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 7 [2022-11-26 00:49:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:37,778 INFO L225 Difference]: With dead ends: 13 [2022-11-26 00:49:37,778 INFO L226 Difference]: Without dead ends: 9 [2022-11-26 00:49:37,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 51.2s TimeCoverageRelationStatistics Valid=43, Invalid=101, Unknown=4, NotChecked=92, Total=240 [2022-11-26 00:49:37,780 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:37,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 8 Unknown, 17 Unchecked, 25.1s Time] [2022-11-26 00:49:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-26 00:49:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-26 00:49:37,784 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) [2022-11-26 00:49:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:49:37,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-11-26 00:49:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:37,785 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:49:37,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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) [2022-11-26 00:49:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:49:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:49:37,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:37,786 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:37,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-26 00:49:38,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:38,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:38,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:49:38,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:49:38,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 2 times [2022-11-26 00:49:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:49:38,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274451665] [2022-11-26 00:49:38,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:49:38,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:38,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:49:38,390 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:49:38,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-26 00:49:38,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:49:38,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:49:39,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:49:39,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:44,845 WARN L859 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-11-26 00:49:54,235 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-26 00:50:10,857 WARN L233 SmtUtils]: Spent 10.59s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:50:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-26 00:50:15,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:50:25,143 WARN L837 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-11-26 00:50:27,288 WARN L859 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-11-26 00:50:32,480 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-26 00:50:39,083 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2022-11-26 00:50:41,507 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2022-11-26 00:50:43,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:50:43,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274451665] [2022-11-26 00:50:43,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 5117 column 7: push canceled [2022-11-26 00:50:43,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1338503415] [2022-11-26 00:50:43,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:50:43,546 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:50:43,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:50:43,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:50:43,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 00:50:46,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:50:46,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:50:46,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:50:46,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:50:46,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function currentRoundingMode is already defined. [2022-11-26 00:50:46,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861586694] [2022-11-26 00:50:46,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:50:46,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:50:46,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:50:46,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:50:46,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:53:05,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:53:05,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:53:05,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:53:05,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:53:05,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function currentRoundingMode is already defined. [2022-11-26 00:53:05,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:05,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-26 00:53:05,966 ERROR L170 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2022-11-26 00:53:05,966 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2022-11-26 00:53:05,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:53:05,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:53:06,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:53:06,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:53:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:53:06,580 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-26 00:53:06,584 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:53:06,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:53:06 BoogieIcfgContainer [2022-11-26 00:53:06,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:53:06,597 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:53:06,597 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:53:06,598 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:53:06,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:46:42" (3/4) ... [2022-11-26 00:53:06,602 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:53:06,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:53:06,603 INFO L158 Benchmark]: Toolchain (without parser) took 388617.06ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 36.5MB in the beginning and 49.9MB in the end (delta: -13.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-11-26 00:53:06,604 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 65.0MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:53:06,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.97ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 36.4MB in the beginning and 70.7MB in the end (delta: -34.3MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-26 00:53:06,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.07ms. Allocated memory is still 92.3MB. Free memory was 70.7MB in the beginning and 69.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:53:06,605 INFO L158 Benchmark]: Boogie Preprocessor took 32.57ms. Allocated memory is still 92.3MB. Free memory was 69.3MB in the beginning and 67.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:53:06,606 INFO L158 Benchmark]: RCFGBuilder took 3802.12ms. Allocated memory is still 92.3MB. Free memory was 67.9MB in the beginning and 59.1MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:53:06,606 INFO L158 Benchmark]: TraceAbstraction took 384430.60ms. Allocated memory is still 92.3MB. Free memory was 58.5MB in the beginning and 49.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-26 00:53:06,607 INFO L158 Benchmark]: Witness Printer took 5.41ms. Allocated memory is still 92.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:53:06,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 65.0MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.97ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 36.4MB in the beginning and 70.7MB in the end (delta: -34.3MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.07ms. Allocated memory is still 92.3MB. Free memory was 70.7MB in the beginning and 69.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.57ms. Allocated memory is still 92.3MB. Free memory was 69.3MB in the beginning and 67.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 3802.12ms. Allocated memory is still 92.3MB. Free memory was 67.9MB in the beginning and 59.1MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 384430.60ms. Allocated memory is still 92.3MB. Free memory was 58.5MB in the beginning and 49.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 5.41ms. Allocated memory is still 92.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/2.5; [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/2.5 [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/2.5 [L23] COND FALSE !(x1 != x) [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 384.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 35.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 28.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 26.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 17 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 14 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 59.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 37.2s SatisfiabilityAnalysisTime, 167.5s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 48 ConstructedInterpolants, 1 QuantifiedInterpolants, 277 SizeOfPredicates, 16 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 0/9 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 [2022-11-26 00:53:06,843 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-26 00:53:06,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55918346-2986-4fba-8b62-e546d1eadc8e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN