./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- [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-5e519f3 [2022-11-03 04:08:56,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:08:56,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:08:57,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:08:57,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:08:57,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:08:57,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:08:57,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:08:57,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:08:57,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:08:57,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:08:57,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:08:57,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:08:57,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:08:57,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:08:57,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:08:57,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:08:57,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:08:57,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:08:57,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:08:57,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:08:57,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:08:57,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:08:57,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:08:57,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:08:57,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:08:57,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:08:57,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:08:57,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:08:57,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:08:57,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:08:57,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:08:57,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:08:57,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:08:57,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:08:57,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:08:57,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:08:57,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:08:57,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:08:57,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:08:57,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:08:57,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:08:57,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:08:57,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:08:57,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:08:57,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:08:57,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:08:57,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:08:57,128 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:08:57,128 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:08:57,129 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:08:57,129 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:08:57,130 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:08:57,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:08:57,130 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:08:57,130 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:08:57,130 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:08:57,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:08:57,131 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:08:57,131 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:08:57,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:08:57,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:08:57,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:08:57,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:08:57,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:08:57,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:08:57,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:08:57,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:08:57,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:08:57,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:08:57,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:08:57,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:08:57,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:08:57,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:08:57,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:57,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:08:57,135 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:08:57,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:08:57,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:08:57,136 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:08:57,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:08:57,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:08:57,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:08:57,137 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_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2022-11-03 04:08:57,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:08:57,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:08:57,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:08:57,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:08:57,506 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:08:57,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-11-03 04:08:57,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data/564b9967d/99b82543f59b4731860d2773a5197013/FLAGc7e219247 [2022-11-03 04:08:58,016 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:08:58,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-11-03 04:08:58,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data/564b9967d/99b82543f59b4731860d2773a5197013/FLAGc7e219247 [2022-11-03 04:08:58,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data/564b9967d/99b82543f59b4731860d2773a5197013 [2022-11-03 04:08:58,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:08:58,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:08:58,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:58,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:08:58,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:08:58,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1328fc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58, skipping insertion in model container [2022-11-03 04:08:58,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:08:58,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:08:58,704 WARN L230 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_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-11-03 04:08:58,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:58,729 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:08:58,743 WARN L230 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_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-11-03 04:08:58,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:58,761 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:08:58,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58 WrapperNode [2022-11-03 04:08:58,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:58,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:58,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:08:58,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:08:58,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,792 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2022-11-03 04:08:58,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:58,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:08:58,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:08:58,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:08:58,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,827 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:08:58,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:08:58,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:08:58,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:08:58,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (1/1) ... [2022-11-03 04:08:58,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:58,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:58,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:08:58,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:08:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:08:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:08:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:08:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:08:58,989 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:08:58,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:08:59,100 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:08:59,146 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:08:59,146 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:08:59,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:08:59 BoogieIcfgContainer [2022-11-03 04:08:59,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:08:59,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:08:59,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:08:59,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:08:59,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:08:58" (1/3) ... [2022-11-03 04:08:59,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24031423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:08:59, skipping insertion in model container [2022-11-03 04:08:59,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:58" (2/3) ... [2022-11-03 04:08:59,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24031423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:08:59, skipping insertion in model container [2022-11-03 04:08:59,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:08:59" (3/3) ... [2022-11-03 04:08:59,172 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i [2022-11-03 04:08:59,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:08:59,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:08:59,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:08:59,308 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;@4e4cb0d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:08:59,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:08:59,326 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) [2022-11-03 04:08:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:08:59,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:59,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:08:59,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:59,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2022-11-03 04:08:59,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:59,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058551538] [2022-11-03 04:08:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:08:59,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:08:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:08:59,529 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:08:59,531 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:08:59,533 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:08:59,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:08:59,541 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 04:08:59,546 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:08:59,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:08:59 BoogieIcfgContainer [2022-11-03 04:08:59,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:08:59,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:08:59,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:08:59,575 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:08:59,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:08:59" (3/4) ... [2022-11-03 04:08:59,583 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 04:08:59,583 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:08:59,585 INFO L158 Benchmark]: Toolchain (without parser) took 1170.70ms. Allocated memory is still 146.8MB. Free memory was 112.6MB in the beginning and 97.0MB in the end (delta: 15.5MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-11-03 04:08:59,587 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory was 67.8MB in the beginning and 67.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:08:59,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.22ms. Allocated memory is still 146.8MB. Free memory was 112.2MB in the beginning and 123.0MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 04:08:59,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.78ms. Allocated memory is still 146.8MB. Free memory was 123.0MB in the beginning and 121.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:08:59,589 INFO L158 Benchmark]: Boogie Preprocessor took 35.49ms. Allocated memory is still 146.8MB. Free memory was 121.8MB in the beginning and 120.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:08:59,595 INFO L158 Benchmark]: RCFGBuilder took 317.63ms. Allocated memory is still 146.8MB. Free memory was 120.5MB in the beginning and 110.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 04:08:59,595 INFO L158 Benchmark]: TraceAbstraction took 420.39ms. Allocated memory is still 146.8MB. Free memory was 110.5MB in the beginning and 97.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 04:08:59,597 INFO L158 Benchmark]: Witness Printer took 8.99ms. Allocated memory is still 146.8MB. Free memory was 97.5MB in the beginning and 97.0MB in the end (delta: 467.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:08:59,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory was 67.8MB in the beginning and 67.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.22ms. Allocated memory is still 146.8MB. Free memory was 112.2MB in the beginning and 123.0MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.78ms. Allocated memory is still 146.8MB. Free memory was 123.0MB in the beginning and 121.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.49ms. Allocated memory is still 146.8MB. Free memory was 121.8MB in the beginning and 120.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 317.63ms. Allocated memory is still 146.8MB. Free memory was 120.5MB in the beginning and 110.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 420.39ms. Allocated memory is still 146.8MB. Free memory was 110.5MB in the beginning and 97.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 8.99ms. Allocated memory is still 146.8MB. Free memory was 97.5MB in the beginning and 97.0MB in the end (delta: 467.1kB). Peak memory consumption was 2.1MB. 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 someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; 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: 0.3s, 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 [2022-11-03 04:08:59,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- [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-5e519f3 [2022-11-03 04:09:01,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:09:01,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:09:02,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:09:02,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:09:02,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:09:02,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:09:02,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:09:02,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:09:02,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:09:02,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:09:02,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:09:02,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:09:02,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:09:02,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:09:02,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:09:02,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:09:02,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:09:02,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:09:02,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:09:02,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:09:02,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:09:02,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:09:02,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:09:02,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:09:02,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:09:02,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:09:02,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:09:02,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:09:02,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:09:02,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:09:02,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:09:02,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:09:02,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:09:02,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:09:02,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:09:02,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:09:02,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:09:02,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:09:02,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:09:02,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:09:02,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 04:09:02,102 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:09:02,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:09:02,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:09:02,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:09:02,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:09:02,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:09:02,104 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:09:02,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:09:02,105 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:09:02,105 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:09:02,105 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:09:02,105 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:09:02,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:09:02,107 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:09:02,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:09:02,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:09:02,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:09:02,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:09:02,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:09:02,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:09:02,108 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:09:02,109 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:09:02,109 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:09:02,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:09:02,110 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:09:02,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:09:02,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:09:02,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:09:02,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:09:02,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:02,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:09:02,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:09:02,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:09:02,112 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:09:02,113 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:09:02,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:09:02,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:09:02,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:09:02,114 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_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2022-11-03 04:09:02,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:09:02,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:09:02,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:09:02,528 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:09:02,529 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:09:02,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-11-03 04:09:02,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data/421ed9219/f76ec2e928f94c2cbe1a90ed2dde3b1b/FLAG52e4b2b60 [2022-11-03 04:09:03,162 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:09:03,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-11-03 04:09:03,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data/421ed9219/f76ec2e928f94c2cbe1a90ed2dde3b1b/FLAG52e4b2b60 [2022-11-03 04:09:03,515 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/data/421ed9219/f76ec2e928f94c2cbe1a90ed2dde3b1b [2022-11-03 04:09:03,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:09:03,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:09:03,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:03,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:09:03,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:09:03,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd5abfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03, skipping insertion in model container [2022-11-03 04:09:03,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:09:03,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:09:03,713 WARN L230 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_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-11-03 04:09:03,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:03,742 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:09:03,774 WARN L230 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_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-11-03 04:09:03,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:03,812 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:09:03,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03 WrapperNode [2022-11-03 04:09:03,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:03,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:03,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:09:03,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:09:03,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,860 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-11-03 04:09:03,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:03,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:09:03,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:09:03,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:09:03,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:09:03,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:09:03,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:09:03,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:09:03,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (1/1) ... [2022-11-03 04:09:03,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:03,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:03,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:09:03,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:09:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:09:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 04:09:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:09:04,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:09:04,082 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:09:04,084 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:09:05,100 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:09:05,106 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:09:05,106 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:09:05,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:05 BoogieIcfgContainer [2022-11-03 04:09:05,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:09:05,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:09:05,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:09:05,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:09:05,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:03" (1/3) ... [2022-11-03 04:09:05,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d903903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:05, skipping insertion in model container [2022-11-03 04:09:05,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:03" (2/3) ... [2022-11-03 04:09:05,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d903903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:05, skipping insertion in model container [2022-11-03 04:09:05,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:05" (3/3) ... [2022-11-03 04:09:05,117 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i [2022-11-03 04:09:05,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:09:05,137 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:09:05,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:09:05,206 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;@e012c6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:09:05,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:09:05,230 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) [2022-11-03 04:09:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 04:09:05,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:05,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 04:09:05,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:05,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-11-03 04:09:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:05,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416618092] [2022-11-03 04:09:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:05,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:05,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:05,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:05,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:09:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:05,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:09:05,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:06,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:09:06,816 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:09:06,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416618092] [2022-11-03 04:09:06,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416618092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:06,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:06,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:06,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818781258] [2022-11-03 04:09:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:06,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:09:06,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:09:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:09:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:09:06,858 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) [2022-11-03 04:09:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:08,709 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-11-03 04:09:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:09:08,790 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 [2022-11-03 04:09:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:08,798 INFO L225 Difference]: With dead ends: 20 [2022-11-03 04:09:08,798 INFO L226 Difference]: Without dead ends: 8 [2022-11-03 04:09:08,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:09:08,805 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:08,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 15 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:09:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-03 04:09:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-03 04:09:08,836 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) [2022-11-03 04:09:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-03 04:09:08,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-03 04:09:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:08,839 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-03 04:09:08,839 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) [2022-11-03 04:09:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-03 04:09:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:09:08,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:08,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:08,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:09,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:09:09,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-11-03 04:09:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:09,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264828196] [2022-11-03 04:09:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:09,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:09,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:09,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:09:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:09,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:09:09,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:11,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:17,918 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:09:17,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264828196] [2022-11-03 04:09:17,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264828196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:09:17,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [209162872] [2022-11-03 04:09:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:17,919 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:09:17,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:09:17,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:09:17,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-03 04:09:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:18,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:09:18,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:22,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:24,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [209162872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:09:24,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906343459] [2022-11-03 04:09:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:24,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:24,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:24,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:24,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:09:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:26,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:09:26,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:29,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:38,644 WARN L855 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-11-03 04:09:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-03 04:09:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906343459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:09:38,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:09:38,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 6] total 14 [2022-11-03 04:09:38,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813635390] [2022-11-03 04:09:38,702 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:09:38,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:09:38,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:09:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:09:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=114, Unknown=2, NotChecked=22, Total=182 [2022-11-03 04:09:38,705 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:09:40,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:44,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:48,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:50,385 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 [] [2022-11-03 04:09:51,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:51,228 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-03 04:09:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:09:51,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 04:09:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:51,229 INFO L225 Difference]: With dead ends: 14 [2022-11-03 04:09:51,229 INFO L226 Difference]: Without dead ends: 10 [2022-11-03 04:09:51,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=59, Invalid=152, Unknown=3, NotChecked=26, Total=240 [2022-11-03 04:09:51,231 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:51,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 3 Unknown, 10 Unchecked, 8.7s Time] [2022-11-03 04:09:51,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-03 04:09:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-03 04:09:51,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-11-03 04:09:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-11-03 04:09:51,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2022-11-03 04:09:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:51,236 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-11-03 04:09:51,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:09:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-11-03 04:09:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 04:09:51,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:51,238 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:51,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 04:09:51,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:51,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:51,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:09:51,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 2 times [2022-11-03 04:09:51,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:51,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013365838] [2022-11-03 04:09:51,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 04:09:51,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:51,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:51,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:51,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 04:09:52,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 04:09:52,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:09:52,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:09:52,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:15,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:34,871 WARN L234 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:10:43,728 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-11-03 04:10:45,768 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-11-03 04:10:56,291 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-11-03 04:10:58,346 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-11-03 04:10:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-03 04:10:58,998 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:58,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013365838] [2022-11-03 04:10:58,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013365838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:10:58,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1162829720] [2022-11-03 04:10:58,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 04:10:58,999 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:10:58,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:10:59,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:10:59,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 04:10:59,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 04:10:59,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:10:59,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:10:59,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:05,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-03 04:11:25,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1162829720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:25,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44136974] [2022-11-03 04:11:25,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 04:11:25,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:25,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:25,861 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:25,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 04:11:31,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 04:11:31,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:11:31,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:11:31,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:46,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:12,190 WARN L234 SmtUtils]: Spent 7.43s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:24,771 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (fp.eq .cse0 |c_ULTIMATE.start_main_~x1~0#1|) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-11-03 04:12:39,434 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse2))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse2))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse2) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2022-11-03 04:12:41,491 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse2))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse2))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse2) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2022-11-03 04:12:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-03 04:12:44,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44136974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:12:44,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:12:44,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6, 8, 6, 8] total 17 [2022-11-03 04:12:44,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035551523] [2022-11-03 04:12:44,557 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:12:44,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 04:12:44,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:12:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 04:12:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=107, Unknown=15, NotChecked=100, Total=272 [2022-11-03 04:12:44,559 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 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) [2022-11-03 04:12:46,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:48,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:51,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:54,440 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse5))) (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (.cse2 (fp.div c_currentRoundingMode .cse3 .cse5))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse5) .cse2))) (.cse1 (fp.eq .cse2 .cse4))) (and (or .cse0 .cse1) (or (fp.eq .cse2 .cse3) .cse0 .cse1) (or (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x~0#1| .cse4)) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse5)) (= c_currentRoundingMode roundNearestTiesToEven)))))) is different from true [2022-11-03 04:12:57,170 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse4))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse4) .cse0))) (.cse2 (fp.eq .cse0 .cse3))) (and (or (fp.eq .cse0 |c_ULTIMATE.start_main_~x1~0#1|) .cse1 .cse2) (or (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x~0#1| .cse3)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse4) .cse4) |c_ULTIMATE.start_main_~x1~0#1|) (or .cse1 .cse2) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2022-11-03 04:12:59,907 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-03 04:13:07,532 WARN L234 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:10,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:18,204 WARN L234 SmtUtils]: Spent 6.42s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:19,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:19,074 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-03 04:13:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 04:13:19,093 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 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 9 [2022-11-03 04:13:19,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:19,093 INFO L225 Difference]: With dead ends: 18 [2022-11-03 04:13:19,093 INFO L226 Difference]: Without dead ends: 12 [2022-11-03 04:13:19,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 95.2s TimeCoverageRelationStatistics Valid=70, Invalid=150, Unknown=18, NotChecked=224, Total=462 [2022-11-03 04:13:19,095 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:19,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 3 Unknown, 35 Unchecked, 12.8s Time] [2022-11-03 04:13:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-03 04:13:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-03 04:13:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-03 04:13:19,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2022-11-03 04:13:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:19,099 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-03 04:13:19,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 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) [2022-11-03 04:13:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-03 04:13:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 04:13:19,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:19,100 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2022-11-03 04:13:19,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:19,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:19,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:19,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:13:19,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 3 times [2022-11-03 04:13:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:13:19,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624623812] [2022-11-03 04:13:19,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:13:19,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:13:19,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:13:19,710 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:13:19,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 04:13:19,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 04:13:19,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:13:19,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:13:19,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:30,115 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_26| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_26| .cse1))) (and (= .cse0 |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_26|))))) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-03 04:13:44,761 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_26| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_26| .cse1))) (and (= .cse0 |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_26|))))) (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-03 04:14:06,257 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (or (and (exists ((|v_ULTIMATE.start_main_~x~0#1_26| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_26| .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 .cse2)) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_26|))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_26| (_ FloatingPoint 8 24))) (let ((.cse3 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_26| .cse1))) (and (fp.eq .cse3 .cse2) (not (fp.eq .cse3 |v_ULTIMATE.start_main_~x~0#1_26|))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) is different from false [2022-11-03 04:14:22,066 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_26| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_26| .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_26|)))))) is different from false [2022-11-03 04:14:24,094 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_26| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_26| .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_26|)))))) is different from true [2022-11-03 04:14:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 5 not checked. [2022-11-03 04:14:24,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:14:31,776 WARN L855 $PredicateComparison]: unable to prove that (or (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-11-03 04:14:46,226 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_28| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_28| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_28|) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2022-11-03 04:14:48,263 WARN L855 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_28| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_28| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_28|) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2022-11-03 04:15:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 9 not checked. [2022-11-03 04:15:34,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:15:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624623812] [2022-11-03 04:15:34,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624623812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:15:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2061363942] [2022-11-03 04:15:34,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:15:34,305 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:15:34,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:15:34,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:15:34,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 04:15:35,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 04:15:35,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:15:35,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:15:35,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:01,988 WARN L234 SmtUtils]: Spent 8.98s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:14,399 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_33| (_ FloatingPoint 8 24))) (and (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_33|)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_33| .cse0)))) (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-03 04:16:34,978 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (or (and (exists ((|v_ULTIMATE.start_main_~x~0#1_33| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_33| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_33|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 .cse2))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_33| (_ FloatingPoint 8 24))) (let ((.cse3 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_33| .cse1))) (and (not (fp.eq .cse3 |v_ULTIMATE.start_main_~x~0#1_33|)) (fp.eq .cse3 .cse2)))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) is different from false [2022-11-03 04:16:50,863 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_33| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_33| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_33|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from false [2022-11-03 04:16:52,891 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_33| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_33| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_33|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from true [2022-11-03 04:16:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 04:16:52,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:16:52,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2061363942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:16:52,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:16:52,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 16 [2022-11-03 04:16:52,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811314371] [2022-11-03 04:16:52,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:16:52,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:16:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:16:52,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=43, Unknown=14, NotChecked=180, Total=272 [2022-11-03 04:16:52,894 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:16:55,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:55,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:55,478 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-11-03 04:16:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:16:55,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 04:16:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:55,518 INFO L225 Difference]: With dead ends: 12 [2022-11-03 04:16:55,518 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 04:16:55,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=35, Invalid=43, Unknown=14, NotChecked=180, Total=272 [2022-11-03 04:16:55,519 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:55,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 16 Unchecked, 2.6s Time] [2022-11-03 04:16:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 04:16:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 04:16:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:16:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 04:16:55,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-03 04:16:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:55,521 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 04:16:55,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:16:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 04:16:55,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 04:16:55,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:16:55,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-03 04:16:55,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-11-03 04:16:55,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:16:55,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 04:18:19,576 WARN L234 SmtUtils]: Spent 1.39m on a formula simplification. DAG size of input: 61 DAG size of output: 17 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-03 04:18:19,586 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 04:18:19,587 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0)))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_33| (_ FloatingPoint 8 24))) (and (= (fp.div currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_33| .cse0) |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_33|)))) (= (fp.div currentRoundingMode |ULTIMATE.start_main_~x~0#1| .cse0) |ULTIMATE.start_main_~x1~0#1|) (= currentRoundingMode roundNearestTiesToEven))) [2022-11-03 04:18:19,587 INFO L899 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2022-11-03 04:18:19,587 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-11-03 04:18:19,587 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-03 04:18:19,587 INFO L895 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-11-03 04:18:19,588 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 04:18:19,588 INFO L895 garLoopResultBuilder]: At program point L30(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-11-03 04:18:19,588 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 04:18:19,588 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 04:18:19,588 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-03 04:18:19,592 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-03 04:18:19,594 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:18:19,601 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 04:18:19,606 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 04:18:19,607 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] [2022-11-03 04:18:19,607 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] [2022-11-03 04:18:19,608 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 04:18:19,609 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] [2022-11-03 04:18:19,609 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] [2022-11-03 04:18:19,609 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 04:18:19,610 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 04:18:19,610 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 04:18:19,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:18:19 BoogieIcfgContainer [2022-11-03 04:18:19,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:18:19,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:18:19,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:18:19,611 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:18:19,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:05" (3/4) ... [2022-11-03 04:18:19,615 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 04:18:19,624 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-03 04:18:19,624 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 04:18:19,624 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 04:18:19,624 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 04:18:19,647 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists v_ULTIMATE.start_main_~x~0#1_33 : C_FLOAT :: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_33, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x && !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0#1_33)) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2022-11-03 04:18:19,651 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 04:18:19,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:18:19,652 INFO L158 Benchmark]: Toolchain (without parser) took 556133.53ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 50.2MB in the beginning and 54.4MB in the end (delta: -4.2MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-11-03 04:18:19,652 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 49.6MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:18:19,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.97ms. Allocated memory is still 69.2MB. Free memory was 50.2MB in the beginning and 51.7MB in the end (delta: -1.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 04:18:19,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.84ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 50.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:18:19,653 INFO L158 Benchmark]: Boogie Preprocessor took 52.78ms. Allocated memory is still 69.2MB. Free memory was 50.1MB in the beginning and 48.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:18:19,654 INFO L158 Benchmark]: RCFGBuilder took 1193.83ms. Allocated memory is still 69.2MB. Free memory was 48.8MB in the beginning and 39.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 04:18:19,654 INFO L158 Benchmark]: TraceAbstraction took 554500.07ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 39.4MB in the beginning and 56.5MB in the end (delta: -17.1MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2022-11-03 04:18:19,654 INFO L158 Benchmark]: Witness Printer took 40.39ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 54.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:18:19,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 49.6MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.97ms. Allocated memory is still 69.2MB. Free memory was 50.2MB in the beginning and 51.7MB in the end (delta: -1.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.84ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 50.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.78ms. Allocated memory is still 69.2MB. Free memory was 50.1MB in the beginning and 48.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1193.83ms. Allocated memory is still 69.2MB. Free memory was 48.8MB in the beginning and 39.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 554500.07ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 39.4MB in the beginning and 56.5MB in the end (delta: -17.1MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 40.39ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 54.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 554.4s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 51.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 83.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 24.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 24.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 61 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 16 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 167.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 32 HoareAnnotationTreeSize, 3 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 419 FormulaSimplificationTreeSizeReductionInter, 83.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 9.0s SatisfiabilityAnalysisTime, 407.7s InterpolantComputationTime, 76 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 119 ConstructedInterpolants, 14 QuantifiedInterpolants, 1476 SizeOfPredicates, 35 NumberOfNonLiveVariables, 240 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 31/87 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2022-11-03 04:18:19,664 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 04:18:19,665 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2022-11-03 04:18:19,665 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] [2022-11-03 04:18:19,665 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] [2022-11-03 04:18:19,665 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 04:18:19,666 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] [2022-11-03 04:18:19,666 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_33,QUANTIFIED] [2022-11-03 04:18:19,666 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\exists v_ULTIMATE.start_main_~x~0#1_33 : C_FLOAT :: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_33, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x && !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0#1_33)) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 13]: Loop Invariant [2022-11-03 04:18:19,667 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 04:18:19,667 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2022-11-03 04:18:19,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a3fa2-48c9-4ec9-9da1-54643fdbe01d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE