./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh --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 b9ce4e199e47d30d5336dd9ca9dceb5f51006e4e1d59090b80d072b498beba7b --- 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-2329fc7 [2022-12-14 07:18:01,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:18:01,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:18:02,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:18:02,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:18:02,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:18:02,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:18:02,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:18:02,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:18:02,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:18:02,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:18:02,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:18:02,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:18:02,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:18:02,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:18:02,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:18:02,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:18:02,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:18:02,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:18:02,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:18:02,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:18:02,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:18:02,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:18:02,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:18:02,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:18:02,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:18:02,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:18:02,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:18:02,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:18:02,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:18:02,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:18:02,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:18:02,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:18:02,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:18:02,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:18:02,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:18:02,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:18:02,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:18:02,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:18:02,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:18:02,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:18:02,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:18:02,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:18:02,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:18:02,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:18:02,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:18:02,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:18:02,053 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:18:02,053 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:18:02,053 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:18:02,053 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:18:02,053 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:18:02,054 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:18:02,054 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:18:02,054 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:18:02,054 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:18:02,054 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:18:02,055 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:18:02,055 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:18:02,055 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:18:02,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:18:02,056 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:18:02,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:18:02,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:18:02,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:18:02,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:18:02,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:18:02,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:18:02,057 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:18:02,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:18:02,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:18:02,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:18:02,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:18:02,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:18:02,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:18:02,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:18:02,059 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:18:02,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:18:02,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:18:02,059 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:18:02,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:18:02,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:18:02,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:18:02,060 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_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9ce4e199e47d30d5336dd9ca9dceb5f51006e4e1d59090b80d072b498beba7b [2022-12-14 07:18:02,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:18:02,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:18:02,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:18:02,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:18:02,283 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:18:02,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2022-12-14 07:18:04,868 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:18:04,985 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:18:04,986 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2022-12-14 07:18:04,990 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/data/a4f4df58c/6a0103bfa3d547e79709b6a82b4f06df/FLAGc39d7cda9 [2022-12-14 07:18:05,000 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/data/a4f4df58c/6a0103bfa3d547e79709b6a82b4f06df [2022-12-14 07:18:05,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:18:05,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:18:05,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:18:05,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:18:05,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:18:05,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3cf6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05, skipping insertion in model container [2022-12-14 07:18:05,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:18:05,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:18:05,134 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2022-12-14 07:18:05,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:18:05,144 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:18:05,159 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2022-12-14 07:18:05,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:18:05,169 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:18:05,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05 WrapperNode [2022-12-14 07:18:05,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:18:05,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:18:05,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:18:05,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:18:05,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,194 INFO L138 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2022-12-14 07:18:05,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:18:05,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:18:05,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:18:05,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:18:05,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:18:05,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:18:05,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:18:05,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:18:05,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (1/1) ... [2022-12-14 07:18:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:18:05,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:18:05,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:18:05,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:18:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:18:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:18:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:18:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-12-14 07:18:05,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-12-14 07:18:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-12-14 07:18:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:18:05,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:18:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:18:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:18:05,329 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:18:05,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:18:05,476 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:18:05,550 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:18:05,550 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 07:18:05,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:18:05 BoogieIcfgContainer [2022-12-14 07:18:05,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:18:05,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:18:05,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:18:05,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:18:05,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:18:05" (1/3) ... [2022-12-14 07:18:05,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f619f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:18:05, skipping insertion in model container [2022-12-14 07:18:05,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:05" (2/3) ... [2022-12-14 07:18:05,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f619f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:18:05, skipping insertion in model container [2022-12-14 07:18:05,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:18:05" (3/3) ... [2022-12-14 07:18:05,559 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2022-12-14 07:18:05,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:18:05,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:18:05,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:18:05,645 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;@720eaeea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:18:05,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:18:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:18:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:18:05,657 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:05,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:05,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash -756331344, now seen corresponding path program 1 times [2022-12-14 07:18:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:18:05,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924476452] [2022-12-14 07:18:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:05,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:18:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:18:05,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:18:05,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924476452] [2022-12-14 07:18:05,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924476452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:05,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:05,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:18:05,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271615285] [2022-12-14 07:18:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:05,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:18:05,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:18:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:18:05,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:18:05,868 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:05,896 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2022-12-14 07:18:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:18:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-12-14 07:18:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:05,903 INFO L225 Difference]: With dead ends: 35 [2022-12-14 07:18:05,904 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 07:18:05,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:18:05,908 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:05,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:18:05,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 07:18:05,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 07:18:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:18:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-12-14 07:18:05,936 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2022-12-14 07:18:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:05,936 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-12-14 07:18:05,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-12-14 07:18:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 07:18:05,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:05,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:05,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:18:05,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:05,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:05,939 INFO L85 PathProgramCache]: Analyzing trace with hash -230328379, now seen corresponding path program 1 times [2022-12-14 07:18:05,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:18:05,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578382022] [2022-12-14 07:18:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:18:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:18:05,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:18:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:18:06,042 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:18:06,043 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:18:06,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 07:18:06,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:18:06,049 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 07:18:06,052 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:18:06,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:18:06 BoogieIcfgContainer [2022-12-14 07:18:06,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:18:06,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:18:06,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:18:06,071 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:18:06,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:18:05" (3/4) ... [2022-12-14 07:18:06,073 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 07:18:06,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:18:06,074 INFO L158 Benchmark]: Toolchain (without parser) took 1071.10ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 93.9MB in the beginning and 110.6MB in the end (delta: -16.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-12-14 07:18:06,074 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 134.2MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:18:06,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.92ms. Allocated memory is still 134.2MB. Free memory was 93.4MB in the beginning and 82.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:18:06,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.96ms. Allocated memory is still 134.2MB. Free memory was 82.8MB in the beginning and 81.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:18:06,076 INFO L158 Benchmark]: Boogie Preprocessor took 17.59ms. Allocated memory is still 134.2MB. Free memory was 81.4MB in the beginning and 79.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:18:06,076 INFO L158 Benchmark]: RCFGBuilder took 340.02ms. Allocated memory is still 134.2MB. Free memory was 79.9MB in the beginning and 62.4MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 07:18:06,077 INFO L158 Benchmark]: TraceAbstraction took 515.76ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 61.5MB in the beginning and 111.7MB in the end (delta: -50.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:18:06,077 INFO L158 Benchmark]: Witness Printer took 3.02ms. Allocated memory is still 165.7MB. Free memory was 111.7MB in the beginning and 110.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:18:06,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 134.2MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.92ms. Allocated memory is still 134.2MB. Free memory was 93.4MB in the beginning and 82.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.96ms. Allocated memory is still 134.2MB. Free memory was 82.8MB in the beginning and 81.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.59ms. Allocated memory is still 134.2MB. Free memory was 81.4MB in the beginning and 79.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 340.02ms. Allocated memory is still 134.2MB. Free memory was 79.9MB in the beginning and 62.4MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 515.76ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 61.5MB in the beginning and 111.7MB in the end (delta: -50.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.02ms. Allocated memory is still 165.7MB. Free memory was 111.7MB in the beginning and 110.6MB in the end (delta: 1.1MB). 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: 70]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L64] CALL, EXPR isnan_double(x) [L18] return x != x; [L64] RET, EXPR isnan_double(x) [L64] COND TRUE !isnan_double(x) [L66] CALL, EXPR fmin_double(x, y) [L47] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967304] [L20] __uint32_t msw, lsw; VAL [\old(x)=4294967304, x=4294967304] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967304, \old(y)=4294967305, __fpclassify_double(x)=0, x=4294967304, y=4294967305] [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; VAL [\old(x)=4294967304, \old(y)=4294967305, \result=4294967305, x=4294967304, y=4294967305] [L66] RET, EXPR fmin_double(x, y) [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x VAL [res=4294967305, x=4294967304, y=4294967305] [L70] reach_error() VAL [res=4294967305, x=4294967304, y=4294967305] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-12-14 07:18:06,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh --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 b9ce4e199e47d30d5336dd9ca9dceb5f51006e4e1d59090b80d072b498beba7b --- 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-2329fc7 [2022-12-14 07:18:07,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:18:07,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:18:07,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:18:07,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:18:07,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:18:07,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:18:07,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:18:07,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:18:07,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:18:07,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:18:07,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:18:07,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:18:07,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:18:07,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:18:07,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:18:07,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:18:07,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:18:07,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:18:07,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:18:07,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:18:07,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:18:07,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:18:07,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:18:07,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:18:07,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:18:07,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:18:07,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:18:07,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:18:07,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:18:07,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:18:07,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:18:07,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:18:07,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:18:07,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:18:07,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:18:07,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:18:07,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:18:07,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:18:07,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:18:07,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:18:07,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 07:18:07,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:18:07,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:18:07,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:18:07,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:18:07,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:18:07,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:18:07,676 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:18:07,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:18:07,676 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:18:07,676 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:18:07,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:18:07,677 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:18:07,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:18:07,677 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:18:07,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:18:07,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:18:07,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:18:07,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:18:07,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:18:07,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:18:07,678 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 07:18:07,678 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 07:18:07,678 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:18:07,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:18:07,678 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:18:07,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:18:07,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:18:07,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 07:18:07,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:18:07,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:18:07,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:18:07,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:18:07,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:18:07,680 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 07:18:07,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 07:18:07,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:18:07,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:18:07,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 07:18:07,680 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_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9ce4e199e47d30d5336dd9ca9dceb5f51006e4e1d59090b80d072b498beba7b [2022-12-14 07:18:07,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:18:07,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:18:07,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:18:07,947 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:18:07,947 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:18:07,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2022-12-14 07:18:10,482 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:18:10,601 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:18:10,602 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2022-12-14 07:18:10,607 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/data/eaea925ec/864c15c2015b459e9d7ec7d969065d64/FLAG707853fbe [2022-12-14 07:18:10,620 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/data/eaea925ec/864c15c2015b459e9d7ec7d969065d64 [2022-12-14 07:18:10,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:18:10,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:18:10,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:18:10,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:18:10,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:18:10,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586ad4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10, skipping insertion in model container [2022-12-14 07:18:10,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:18:10,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:18:10,780 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2022-12-14 07:18:10,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:18:10,797 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:18:10,817 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2022-12-14 07:18:10,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:18:10,835 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:18:10,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10 WrapperNode [2022-12-14 07:18:10,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:18:10,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:18:10,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:18:10,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:18:10,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,868 INFO L138 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2022-12-14 07:18:10,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:18:10,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:18:10,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:18:10,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:18:10,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:18:10,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:18:10,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:18:10,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:18:10,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (1/1) ... [2022-12-14 07:18:10,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:18:10,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:18:10,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:18:10,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:18:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:18:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-12-14 07:18:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 07:18:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:18:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-12-14 07:18:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-12-14 07:18:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 07:18:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:18:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:18:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:18:11,028 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:18:11,029 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:18:11,162 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:18:11,165 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:18:11,165 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 07:18:11,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:18:11 BoogieIcfgContainer [2022-12-14 07:18:11,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:18:11,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:18:11,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:18:11,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:18:11,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:18:10" (1/3) ... [2022-12-14 07:18:11,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58651ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:18:11, skipping insertion in model container [2022-12-14 07:18:11,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:18:10" (2/3) ... [2022-12-14 07:18:11,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58651ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:18:11, skipping insertion in model container [2022-12-14 07:18:11,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:18:11" (3/3) ... [2022-12-14 07:18:11,173 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2022-12-14 07:18:11,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:18:11,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:18:11,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:18:11,227 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;@d8acc59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:18:11,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:18:11,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:18:11,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:18:11,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:11,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:11,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash -315010535, now seen corresponding path program 1 times [2022-12-14 07:18:11,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:11,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864756576] [2022-12-14 07:18:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:11,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:11,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:11,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:11,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 07:18:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:11,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 07:18:11,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:18:11,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:11,397 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:11,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864756576] [2022-12-14 07:18:11,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864756576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:11,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:11,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:18:11,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821061706] [2022-12-14 07:18:11,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:11,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:18:11,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:11,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:18:11,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:18:11,425 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:11,440 INFO L93 Difference]: Finished difference Result 45 states and 65 transitions. [2022-12-14 07:18:11,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:18:11,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-12-14 07:18:11,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:11,447 INFO L225 Difference]: With dead ends: 45 [2022-12-14 07:18:11,447 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 07:18:11,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:18:11,452 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:11,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:18:11,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 07:18:11,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 07:18:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:18:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-12-14 07:18:11,480 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 14 [2022-12-14 07:18:11,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:11,480 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-12-14 07:18:11,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:11,480 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-12-14 07:18:11,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:18:11,481 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:11,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:11,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:18:11,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:11,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:11,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1327229704, now seen corresponding path program 1 times [2022-12-14 07:18:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:11,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115286051] [2022-12-14 07:18:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:11,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:11,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:11,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:11,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 07:18:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:11,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:18:11,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:18:11,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:11,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:11,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115286051] [2022-12-14 07:18:11,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115286051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:11,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:11,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:18:11,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325125795] [2022-12-14 07:18:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:11,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:18:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:11,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:18:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:11,824 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:11,925 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2022-12-14 07:18:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:18:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-14 07:18:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:11,928 INFO L225 Difference]: With dead ends: 28 [2022-12-14 07:18:11,928 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 07:18:11,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:11,929 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:11,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:18:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 07:18:11,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 07:18:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:18:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-12-14 07:18:11,936 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 15 [2022-12-14 07:18:11,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:11,936 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-12-14 07:18:11,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:11,936 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-12-14 07:18:11,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:18:11,937 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:11,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:11,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 07:18:12,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:12,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2095904004, now seen corresponding path program 1 times [2022-12-14 07:18:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:12,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993512754] [2022-12-14 07:18:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:12,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:12,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:12,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:12,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 07:18:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:12,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:18:12,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:18:12,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:12,303 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:12,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993512754] [2022-12-14 07:18:12,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993512754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:12,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:12,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:18:12,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296906788] [2022-12-14 07:18:12,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:12,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:18:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:12,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:18:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:12,305 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:12,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:12,359 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-12-14 07:18:12,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:18:12,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-12-14 07:18:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:12,361 INFO L225 Difference]: With dead ends: 31 [2022-12-14 07:18:12,361 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 07:18:12,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:12,362 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:12,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:18:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 07:18:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-12-14 07:18:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:18:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-12-14 07:18:12,366 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2022-12-14 07:18:12,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:12,366 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-12-14 07:18:12,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:12,366 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-12-14 07:18:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 07:18:12,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:12,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:12,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 07:18:12,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:12,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:12,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash -899956100, now seen corresponding path program 1 times [2022-12-14 07:18:12,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:12,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983241570] [2022-12-14 07:18:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:12,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:12,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:12,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 07:18:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:12,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:18:12,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:18:12,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:12,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:12,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983241570] [2022-12-14 07:18:12,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983241570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:12,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:12,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:18:12,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363998854] [2022-12-14 07:18:12,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:12,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:18:12,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:12,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:18:12,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:12,717 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:12,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:12,865 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-12-14 07:18:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:18:12,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-12-14 07:18:12,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:12,867 INFO L225 Difference]: With dead ends: 31 [2022-12-14 07:18:12,867 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 07:18:12,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:12,868 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:12,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:18:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 07:18:12,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-12-14 07:18:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:18:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-12-14 07:18:12,872 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 17 [2022-12-14 07:18:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:12,872 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-12-14 07:18:12,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-12-14 07:18:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 07:18:12,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:12,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:12,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 07:18:13,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:13,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1069737984, now seen corresponding path program 1 times [2022-12-14 07:18:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:13,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995954665] [2022-12-14 07:18:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:13,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:13,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:13,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:13,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 07:18:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:13,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:18:13,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:18:13,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:13,229 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:13,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995954665] [2022-12-14 07:18:13,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995954665] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:13,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:13,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:18:13,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404135003] [2022-12-14 07:18:13,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:13,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:18:13,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:13,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:18:13,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:13,231 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:13,364 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-12-14 07:18:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:18:13,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-14 07:18:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:13,365 INFO L225 Difference]: With dead ends: 31 [2022-12-14 07:18:13,365 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 07:18:13,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:13,367 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:13,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:18:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 07:18:13,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-12-14 07:18:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:18:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-12-14 07:18:13,372 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 18 [2022-12-14 07:18:13,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:13,372 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-12-14 07:18:13,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-12-14 07:18:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 07:18:13,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:13,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:13,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 07:18:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:13,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:13,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1957241665, now seen corresponding path program 1 times [2022-12-14 07:18:13,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:13,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574955466] [2022-12-14 07:18:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:13,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:13,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:13,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:13,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 07:18:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:13,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 07:18:13,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:18:14,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:14,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:14,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574955466] [2022-12-14 07:18:14,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574955466] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:14,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:14,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 07:18:14,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631107361] [2022-12-14 07:18:14,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:14,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 07:18:14,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 07:18:14,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:18:14,331 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:16,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:18,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:20,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:22,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:24,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:24,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:24,690 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2022-12-14 07:18:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 07:18:24,691 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-14 07:18:24,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:24,691 INFO L225 Difference]: With dead ends: 45 [2022-12-14 07:18:24,692 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 07:18:24,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-14 07:18:24,692 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:24,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 60 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-12-14 07:18:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 07:18:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-12-14 07:18:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 07:18:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-12-14 07:18:24,696 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 18 [2022-12-14 07:18:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:24,696 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-12-14 07:18:24,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:18:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-12-14 07:18:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 07:18:24,697 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:24,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:24,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 07:18:24,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:24,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:24,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash -147482436, now seen corresponding path program 1 times [2022-12-14 07:18:24,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:24,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990090494] [2022-12-14 07:18:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:24,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:24,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:24,905 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:24,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 07:18:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:25,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:18:25,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:18:25,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:25,237 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:25,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990090494] [2022-12-14 07:18:25,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990090494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:25,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:25,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:18:25,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097965112] [2022-12-14 07:18:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:25,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:18:25,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:18:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:18:25,240 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:27,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:27,213 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-12-14 07:18:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:18:27,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-12-14 07:18:27,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:27,215 INFO L225 Difference]: With dead ends: 30 [2022-12-14 07:18:27,215 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 07:18:27,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:18:27,215 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:27,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 51 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 07:18:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 07:18:27,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 07:18:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:18:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-12-14 07:18:27,219 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2022-12-14 07:18:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:27,219 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-12-14 07:18:27,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-12-14 07:18:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 07:18:27,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:27,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:27,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-12-14 07:18:27,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:27,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:27,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:27,423 INFO L85 PathProgramCache]: Analyzing trace with hash 53961836, now seen corresponding path program 1 times [2022-12-14 07:18:27,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:27,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453299951] [2022-12-14 07:18:27,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:27,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:27,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:27,427 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:27,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 07:18:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:27,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:18:27,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:18:27,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:27,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:27,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453299951] [2022-12-14 07:18:27,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453299951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:27,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:27,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:18:27,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128652303] [2022-12-14 07:18:27,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:27,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:18:27,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:27,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:18:27,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:18:27,716 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:28,522 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-12-14 07:18:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:18:28,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-12-14 07:18:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:28,523 INFO L225 Difference]: With dead ends: 32 [2022-12-14 07:18:28,523 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 07:18:28,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:18:28,524 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:28,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 54 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 07:18:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 07:18:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-12-14 07:18:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:18:28,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-12-14 07:18:28,528 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 24 [2022-12-14 07:18:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:28,528 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-12-14 07:18:28,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-12-14 07:18:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 07:18:28,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:28,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:28,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 07:18:28,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:28,730 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:28,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1258814400, now seen corresponding path program 1 times [2022-12-14 07:18:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:28,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606887102] [2022-12-14 07:18:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:28,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:28,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:28,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:28,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 07:18:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:28,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:18:28,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:18:29,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:29,120 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:29,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606887102] [2022-12-14 07:18:29,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606887102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:29,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:29,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:18:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244867604] [2022-12-14 07:18:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:29,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:18:29,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:29,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:18:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:18:29,122 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:31,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:32,228 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-12-14 07:18:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:18:32,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-12-14 07:18:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:32,230 INFO L225 Difference]: With dead ends: 34 [2022-12-14 07:18:32,230 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 07:18:32,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:18:32,231 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:32,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 57 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 07:18:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 07:18:32,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2022-12-14 07:18:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:18:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-12-14 07:18:32,236 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 25 [2022-12-14 07:18:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:32,236 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-12-14 07:18:32,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-12-14 07:18:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 07:18:32,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:32,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:32,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 07:18:32,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:32,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:32,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:32,440 INFO L85 PathProgramCache]: Analyzing trace with hash -790414352, now seen corresponding path program 1 times [2022-12-14 07:18:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:32,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558474150] [2022-12-14 07:18:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:32,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:32,445 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:32,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 07:18:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:32,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 07:18:32,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:18:32,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:32,832 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:32,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558474150] [2022-12-14 07:18:32,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558474150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:32,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:32,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:18:32,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118350016] [2022-12-14 07:18:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:32,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:18:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:32,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:18:32,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:18:32,834 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:34,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:38,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:38,857 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-12-14 07:18:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:18:38,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-12-14 07:18:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:38,859 INFO L225 Difference]: With dead ends: 30 [2022-12-14 07:18:38,859 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 07:18:38,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:18:38,860 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:38,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 54 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-12-14 07:18:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 07:18:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-12-14 07:18:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:18:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-12-14 07:18:38,863 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2022-12-14 07:18:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:38,863 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-12-14 07:18:38,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-12-14 07:18:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 07:18:38,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:38,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:38,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-14 07:18:39,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:39,065 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash 97089329, now seen corresponding path program 1 times [2022-12-14 07:18:39,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:39,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560034560] [2022-12-14 07:18:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:39,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:39,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:39,071 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:39,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 07:18:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:39,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:18:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 07:18:39,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:39,212 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:39,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560034560] [2022-12-14 07:18:39,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560034560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:39,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:18:39,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:18:39,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995998425] [2022-12-14 07:18:39,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:39,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:18:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:18:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:39,213 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:39,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:39,233 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-12-14 07:18:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:18:39,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-12-14 07:18:39,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:39,234 INFO L225 Difference]: With dead ends: 27 [2022-12-14 07:18:39,234 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 07:18:39,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:18:39,235 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:39,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:18:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 07:18:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 07:18:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:18:39,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-14 07:18:39,237 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 26 [2022-12-14 07:18:39,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:39,238 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-14 07:18:39,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-14 07:18:39,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 07:18:39,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:39,239 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:39,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 07:18:39,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:39,440 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:18:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:39,441 INFO L85 PathProgramCache]: Analyzing trace with hash 97029747, now seen corresponding path program 1 times [2022-12-14 07:18:39,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:18:39,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545450879] [2022-12-14 07:18:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:39,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:39,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:18:39,446 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:18:39,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 07:18:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:39,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 07:18:39,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:18:39,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:18:40,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:18:40,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545450879] [2022-12-14 07:18:40,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545450879] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:18:40,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [566236871] [2022-12-14 07:18:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:40,263 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:18:40,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:18:40,264 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:18:40,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-12-14 07:18:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:40,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 07:18:40,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 07:18:41,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:18:41,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [566236871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:18:41,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:18:41,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-12-14 07:18:41,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144238150] [2022-12-14 07:18:41,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:18:41,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:18:41,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:18:41,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:18:41,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-12-14 07:18:41,079 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:41,364 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-12-14 07:18:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:18:41,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-12-14 07:18:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:41,365 INFO L225 Difference]: With dead ends: 23 [2022-12-14 07:18:41,365 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 07:18:41,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-12-14 07:18:41,366 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:41,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 92 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:18:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 07:18:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 07:18:41,366 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) [2022-12-14 07:18:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 07:18:41,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-12-14 07:18:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:41,367 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 07:18:41,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 07:18:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 07:18:41,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 07:18:41,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 07:18:41,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2022-12-14 07:18:41,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 07:18:41,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:18:41,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 07:18:42,901 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleFINAL(lines 19 44) no Hoare annotation was computed. [2022-12-14 07:18:42,902 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 44) the Hoare annotation is: true [2022-12-14 07:18:42,902 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2022-12-14 07:18:42,902 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleEXIT(lines 19 44) no Hoare annotation was computed. [2022-12-14 07:18:42,902 INFO L899 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2022-12-14 07:18:42,902 INFO L895 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2022-12-14 07:18:42,902 INFO L899 garLoopResultBuilder]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2022-12-14 07:18:42,902 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2022-12-14 07:18:42,902 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 43) no Hoare annotation was computed. [2022-12-14 07:18:42,902 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 07:18:42,902 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 73) no Hoare annotation was computed. [2022-12-14 07:18:42,902 INFO L899 garLoopResultBuilder]: For program point L64-2(lines 64 73) no Hoare annotation was computed. [2022-12-14 07:18:42,903 INFO L895 garLoopResultBuilder]: At program point fmin_double_returnLabel#1(lines 46 53) the Hoare annotation is: (and (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res#1|) (= |ULTIMATE.start_fmin_double_#res#1| |ULTIMATE.start_main_~x~0#1|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_main_~y~0#1|)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_~y#1| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (fp.eq |ULTIMATE.start_fmin_double_~x#1| |ULTIMATE.start_fmin_double_~x#1|) (= |ULTIMATE.start_fmin_double_~x#1| |ULTIMATE.start_main_~x~0#1|)) [2022-12-14 07:18:42,903 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 07:18:42,903 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 55 76) the Hoare annotation is: true [2022-12-14 07:18:42,903 INFO L895 garLoopResultBuilder]: At program point isnan_double_returnLabel#1(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_main_~y~0#1|)) (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res#1|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res#1|) (not .cse0))))) [2022-12-14 07:18:42,903 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 72) no Hoare annotation was computed. [2022-12-14 07:18:42,903 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 07:18:42,903 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 07:18:42,903 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2022-12-14 07:18:42,904 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res#1|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_main_~y~0#1|)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_~y#1| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (fp.eq |ULTIMATE.start_fmin_double_~x#1| |ULTIMATE.start_fmin_double_~x#1|) (= |ULTIMATE.start_fmin_double_~x#1| |ULTIMATE.start_main_~x~0#1|)) [2022-12-14 07:18:42,904 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 49 50) no Hoare annotation was computed. [2022-12-14 07:18:42,904 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (and (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res#1|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_main_~y~0#1|)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_~y#1| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (fp.eq |ULTIMATE.start_fmin_double_~x#1| |ULTIMATE.start_fmin_double_~x#1|) (= |ULTIMATE.start_fmin_double_~x#1| |ULTIMATE.start_main_~x~0#1|)) [2022-12-14 07:18:42,904 INFO L899 garLoopResultBuilder]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2022-12-14 07:18:42,904 INFO L899 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2022-12-14 07:18:42,906 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:42,908 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:18:42,912 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,916 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,917 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,917 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,917 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,917 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:18:42 BoogieIcfgContainer [2022-12-14 07:18:42,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:18:42,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:18:42,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:18:42,919 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:18:42,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:18:11" (3/4) ... [2022-12-14 07:18:42,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 07:18:42,925 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2022-12-14 07:18:42,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-14 07:18:42,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 07:18:42,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 07:18:42,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 07:18:42,944 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ((0bv32 == \result && ~fp.eq~DOUBLE(x, x)) || (1bv32 == \result && !~fp.eq~DOUBLE(x, x))) [2022-12-14 07:18:42,944 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-12-14 07:18:42,944 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && \result == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && ~fp.eq~DOUBLE(x, x)) && x == x [2022-12-14 07:18:42,949 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:18:42,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:18:42,950 INFO L158 Benchmark]: Toolchain (without parser) took 32326.91ms. Allocated memory is still 96.5MB. Free memory was 69.9MB in the beginning and 46.7MB in the end (delta: 23.2MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2022-12-14 07:18:42,950 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 50.3MB. Free memory is still 28.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:18:42,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.37ms. Allocated memory is still 96.5MB. Free memory was 69.6MB in the beginning and 58.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 07:18:42,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.37ms. Allocated memory is still 96.5MB. Free memory was 58.1MB in the beginning and 56.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:18:42,951 INFO L158 Benchmark]: Boogie Preprocessor took 29.57ms. Allocated memory is still 96.5MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:18:42,951 INFO L158 Benchmark]: RCFGBuilder took 267.55ms. Allocated memory is still 96.5MB. Free memory was 54.9MB in the beginning and 67.1MB in the end (delta: -12.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 07:18:42,951 INFO L158 Benchmark]: TraceAbstraction took 31749.88ms. Allocated memory is still 96.5MB. Free memory was 66.3MB in the beginning and 50.0MB in the end (delta: 16.3MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2022-12-14 07:18:42,951 INFO L158 Benchmark]: Witness Printer took 31.06ms. Allocated memory is still 96.5MB. Free memory was 50.0MB in the beginning and 46.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 07:18:42,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 50.3MB. Free memory is still 28.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.37ms. Allocated memory is still 96.5MB. Free memory was 69.6MB in the beginning and 58.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.37ms. Allocated memory is still 96.5MB. Free memory was 58.1MB in the beginning and 56.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.57ms. Allocated memory is still 96.5MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 267.55ms. Allocated memory is still 96.5MB. Free memory was 54.9MB in the beginning and 67.1MB in the end (delta: -12.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 31749.88ms. Allocated memory is still 96.5MB. Free memory was 66.3MB in the beginning and 50.0MB in the end (delta: 16.3MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Witness Printer took 31.06ms. Allocated memory is still 96.5MB. Free memory was 50.0MB in the beginning and 46.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 70]: 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 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.7s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 23.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 21.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 769 SdHoareTripleChecker+Invalid, 21.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 510 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 436 IncrementalHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 259 mSDtfsCounter, 436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 67, 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, 12 MinimizatonAttempts, 21 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 104 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 261 ConstructedInterpolants, 58 QuantifiedInterpolants, 1453 SizeOfPredicates, 57 NumberOfNonLiveVariables, 975 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 37/42 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 [2022-12-14 07:18:42,958 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,959 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ((0bv32 == \result && ~fp.eq~DOUBLE(x, x)) || (1bv32 == \result && !~fp.eq~DOUBLE(x, x))) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant [2022-12-14 07:18:42,959 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,959 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,959 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-12-14 07:18:42,959 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((((0bv32 == \result && \result == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && ~fp.eq~DOUBLE(x, x)) && x == x - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: \old(x) == x RESULT: Ultimate proved your program to be correct! [2022-12-14 07:18:43,162 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-12-14 07:18:43,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d790dca8-afce-4ac0-b415-a0a9ee3c2b19/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE