./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_reinit.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_reinit.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH --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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:50:35,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:50:35,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:50:35,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:50:35,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:50:35,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:50:35,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:50:35,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:50:35,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:50:35,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:50:35,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:50:35,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:50:35,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:50:35,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:50:35,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:50:35,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:50:35,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:50:35,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:50:35,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:50:35,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:50:35,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:50:35,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:50:35,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:50:35,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:50:35,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:50:35,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:50:35,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:50:35,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:50:35,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:50:35,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:50:35,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:50:35,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:50:35,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:50:35,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:50:35,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:50:35,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:50:35,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:50:35,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:50:35,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:50:35,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:50:35,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:50:35,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:50:35,511 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:50:35,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:50:35,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:50:35,513 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:50:35,513 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:50:35,513 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:50:35,514 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:50:35,514 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:50:35,514 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:50:35,515 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:50:35,515 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:50:35,515 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:50:35,516 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:50:35,516 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:50:35,516 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:50:35,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:50:35,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:50:35,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:50:35,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:50:35,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:50:35,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:50:35,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:50:35,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:50:35,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:50:35,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:50:35,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:50:35,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:50:35,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:50:35,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:50:35,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:50:35,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:50:35,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:50:35,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:50:35,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:50:35,522 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:50:35,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:50:35,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:50:35,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:50:35,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:50:35,523 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2021-11-03 03:50:35,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:50:35,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:50:35,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:50:35,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:50:35,870 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:50:35,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-11-03 03:50:35,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data/fef2799d5/bd79da725e4b4c7f9e1550b13fe53a67/FLAG645079a87 [2021-11-03 03:50:36,427 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:50:36,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-11-03 03:50:36,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data/fef2799d5/bd79da725e4b4c7f9e1550b13fe53a67/FLAG645079a87 [2021-11-03 03:50:36,787 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data/fef2799d5/bd79da725e4b4c7f9e1550b13fe53a67 [2021-11-03 03:50:36,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:50:36,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:50:36,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:36,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:50:36,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:50:36,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:36" (1/1) ... [2021-11-03 03:50:36,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554749f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:36, skipping insertion in model container [2021-11-03 03:50:36,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:36" (1/1) ... [2021-11-03 03:50:36,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:50:36,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:50:36,996 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2021-11-03 03:50:37,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:37,029 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:50:37,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2021-11-03 03:50:37,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:37,082 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:50:37,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37 WrapperNode [2021-11-03 03:50:37,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:37,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:50:37,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:50:37,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:50:37,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:50:37,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:50:37,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:50:37,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:50:37,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:50:37,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:50:37,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:50:37,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:50:37,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (1/1) ... [2021-11-03 03:50:37,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:50:37,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:37,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:50:37,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:50:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:50:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:50:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:50:37,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:50:37,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:50:37,702 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-03 03:50:37,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:37 BoogieIcfgContainer [2021-11-03 03:50:37,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:50:37,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:50:37,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:50:37,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:50:37,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:50:36" (1/3) ... [2021-11-03 03:50:37,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1ebd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:37, skipping insertion in model container [2021-11-03 03:50:37,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:37" (2/3) ... [2021-11-03 03:50:37,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1ebd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:37, skipping insertion in model container [2021-11-03 03:50:37,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:37" (3/3) ... [2021-11-03 03:50:37,731 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2021-11-03 03:50:37,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:50:37,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:50:37,794 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:50:37,804 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:50:37,804 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:50:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 03:50:37,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:37,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 03:50:37,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:50:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2960233, now seen corresponding path program 1 times [2021-11-03 03:50:37,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:50:37,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754547596] [2021-11-03 03:50:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:37,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:50:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:50:38,038 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 03:50:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:50:38,159 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 03:50:38,168 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 03:50:38,169 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:50:38,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:50:38,175 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 03:50:38,178 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:50:38,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:50:38 BoogieIcfgContainer [2021-11-03 03:50:38,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:50:38,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:50:38,199 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:50:38,200 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:50:38,200 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:37" (3/4) ... [2021-11-03 03:50:38,203 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 03:50:38,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:50:38,209 INFO L168 Benchmark]: Toolchain (without parser) took 1412.84 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 70.6 MB in the beginning and 112.3 MB in the end (delta: -41.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:50:38,209 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:50:38,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.24 ms. Allocated memory is still 104.9 MB. Free memory was 70.4 MB in the beginning and 79.0 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:38,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 77.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:38,212 INFO L168 Benchmark]: Boogie Preprocessor took 51.84 ms. Allocated memory is still 104.9 MB. Free memory was 77.3 MB in the beginning and 76.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:38,212 INFO L168 Benchmark]: RCFGBuilder took 524.05 ms. Allocated memory is still 104.9 MB. Free memory was 76.3 MB in the beginning and 59.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:38,213 INFO L168 Benchmark]: TraceAbstraction took 491.74 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 58.9 MB in the beginning and 113.0 MB in the end (delta: -54.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:50:38,214 INFO L168 Benchmark]: Witness Printer took 4.30 ms. Allocated memory is still 140.5 MB. Free memory was 113.0 MB in the beginning and 112.3 MB in the end (delta: 691.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:50:38,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.24 ms. Allocated memory is still 104.9 MB. Free memory was 70.4 MB in the beginning and 79.0 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 77.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.84 ms. Allocated memory is still 104.9 MB. Free memory was 77.3 MB in the beginning and 76.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 524.05 ms. Allocated memory is still 104.9 MB. Free memory was 76.3 MB in the beginning and 59.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 491.74 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 58.9 MB in the beginning and 113.0 MB in the end (delta: -54.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.30 ms. Allocated memory is still 140.5 MB. Free memory was 113.0 MB in the beginning and 112.3 MB in the end (delta: 691.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: 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 40, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L23] double E, E0, E1, S0, S1, S; [L24] int i; [L26] E = __VERIFIER_nondet_double() [L27] E0 = __VERIFIER_nondet_double() [L16] COND FALSE !(!cond) [L16] COND FALSE !(!cond) [L31] S0 = 0 [L32] S = 0 [L34] i = 0 [L34] COND TRUE i <= 1000000 [L36] E1 = E0 [L37] E0 = E [L39] E = __VERIFIER_nondet_double() [L16] COND FALSE !(!cond) [L42] COND FALSE !(__VERIFIER_nondet_int()) [L49] S1 = S0 [L50] S0 = S [L51] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L18] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 03:50:38,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_reinit.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH --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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:50:40,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:50:40,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:50:40,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:50:40,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:50:40,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:50:40,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:50:40,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:50:40,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:50:40,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:50:40,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:50:40,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:50:40,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:50:40,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:50:40,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:50:40,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:50:40,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:50:40,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:50:40,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:50:40,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:50:40,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:50:40,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:50:40,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:50:40,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:50:40,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:50:40,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:50:40,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:50:40,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:50:40,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:50:40,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:50:40,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:50:40,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:50:40,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:50:40,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:50:40,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:50:40,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:50:40,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:50:40,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:50:40,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:50:40,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:50:40,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:50:40,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:50:40,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:50:40,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:50:40,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:50:40,807 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:50:40,807 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:50:40,807 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:50:40,807 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:50:40,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:50:40,808 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:50:40,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:50:40,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:50:40,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:50:40,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:50:40,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:50:40,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:50:40,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:50:40,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:50:40,811 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:50:40,811 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:50:40,811 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:50:40,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:50:40,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:50:40,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:50:40,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:50:40,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:50:40,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:50:40,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:50:40,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:50:40,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:50:40,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:50:40,814 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:50:40,814 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:40,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:50:40,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:50:40,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:50:40,815 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_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2021-11-03 03:50:41,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:50:41,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:50:41,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:50:41,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:50:41,279 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:50:41,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-11-03 03:50:41,358 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data/7e9bde4f9/f60ea80a42fe44618117cb04d9aca6cb/FLAGe53130b7d [2021-11-03 03:50:41,923 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:50:41,925 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-11-03 03:50:41,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data/7e9bde4f9/f60ea80a42fe44618117cb04d9aca6cb/FLAGe53130b7d [2021-11-03 03:50:42,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/data/7e9bde4f9/f60ea80a42fe44618117cb04d9aca6cb [2021-11-03 03:50:42,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:50:42,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:50:42,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:42,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:50:42,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:50:42,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9c8136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42, skipping insertion in model container [2021-11-03 03:50:42,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:50:42,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:50:42,451 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2021-11-03 03:50:42,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:42,483 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:50:42,535 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2021-11-03 03:50:42,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:42,585 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:50:42,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42 WrapperNode [2021-11-03 03:50:42,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:42,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:50:42,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:50:42,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:50:42,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:50:42,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:50:42,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:50:42,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:50:42,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:50:42,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:50:42,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:50:42,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:50:42,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (1/1) ... [2021-11-03 03:50:42,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:50:42,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:42,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:50:42,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:50:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:50:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:50:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:50:42,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:50:45,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:50:45,369 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-03 03:50:45,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:45 BoogieIcfgContainer [2021-11-03 03:50:45,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:50:45,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:50:45,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:50:45,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:50:45,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:50:42" (1/3) ... [2021-11-03 03:50:45,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4db72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:45, skipping insertion in model container [2021-11-03 03:50:45,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:42" (2/3) ... [2021-11-03 03:50:45,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4db72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:45, skipping insertion in model container [2021-11-03 03:50:45,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:45" (3/3) ... [2021-11-03 03:50:45,381 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2021-11-03 03:50:45,387 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:50:45,387 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:50:45,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:50:45,456 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:50:45,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:50:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:50:45,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:45,478 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:45,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:50:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972244, now seen corresponding path program 1 times [2021-11-03 03:50:45,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:45,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861948692] [2021-11-03 03:50:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:45,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:45,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:45,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:45,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:50:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:47,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:50:47,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:47,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:47,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:47,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861948692] [2021-11-03 03:50:47,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861948692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:47,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:47,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:50:47,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654405008] [2021-11-03 03:50:47,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:50:47,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:50:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:50:47,311 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:47,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:47,327 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-11-03 03:50:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:50:47,329 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 03:50:47,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:47,338 INFO L225 Difference]: With dead ends: 33 [2021-11-03 03:50:47,339 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 03:50:47,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:50:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 03:50:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-03 03:50:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-03 03:50:47,376 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-11-03 03:50:47,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:47,377 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-03 03:50:47,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-03 03:50:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:50:47,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:47,379 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:47,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:47,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:47,605 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:50:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash 604445650, now seen corresponding path program 1 times [2021-11-03 03:50:47,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:47,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463689153] [2021-11-03 03:50:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:47,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:47,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:47,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:47,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:51:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:05,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 03:51:05,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:52:28,807 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (or (not .cse0) (not .cse1)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1)))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from false [2021-11-03 03:52:30,861 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (or (not .cse0) (not .cse1)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1)))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from true [2021-11-03 03:53:19,938 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse2)))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 (fp.neg .cse1))))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from false [2021-11-03 03:53:21,985 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse2)))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 (fp.neg .cse1))))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from true [2021-11-03 03:53:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:53:21,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:33,358 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E0~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S0~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-11-03 03:53:35,516 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E0~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S0~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2021-11-03 03:53:46,347 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2021-11-03 03:53:48,451 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2021-11-03 03:54:03,576 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from false [2021-11-03 03:54:05,693 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-11-03 03:54:51,174 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~E~0_11 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~E~0_11 (_ +zero 11 53))) (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 v_ULTIMATE.start_main_~E~0_11) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (not (fp.leq v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) is different from false [2021-11-03 03:54:53,283 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~E~0_11 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~E~0_11 (_ +zero 11 53))) (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 v_ULTIMATE.start_main_~E~0_11) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (not (fp.leq v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) is different from true [2021-11-03 03:58:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:25,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:58:25,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463689153] [2021-11-03 03:58:25,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463689153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:25,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:25,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-03 03:58:25,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722230284] [2021-11-03 03:58:25,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:58:25,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:58:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:58:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=27, Unknown=12, NotChecked=90, Total=156 [2021-11-03 03:58:25,327 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:27,415 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~E~0_11 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~E~0_11 (_ +zero 11 53))) (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 v_ULTIMATE.start_main_~E~0_11) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (not (fp.leq v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-03 03:58:29,554 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~E~0_11 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~E~0_11 (_ +zero 11 53))) (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 v_ULTIMATE.start_main_~E~0_11) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (not (fp.leq v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 03:58:31,638 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse1 (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53))) (.cse2 (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (or (and .cse0 (or (not .cse1) (not .cse2))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1 .cse2))) (or (let ((.cse3 (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse5 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse5)))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse3 (fp.neg .cse4)) (fp.leq .cse3 .cse4))) .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-03 03:58:33,766 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse1 (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53))) (.cse2 (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (or (and .cse0 (or (not .cse1) (not .cse2))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1 .cse2))) (or (let ((.cse3 (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse5 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse5)))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse3 (fp.neg .cse4)) (fp.leq .cse3 .cse4))) .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 03:58:35,855 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1) (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-03 03:58:37,980 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1) (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-03 03:58:40,088 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E0~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S0~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~S~0) (fp.leq .cse0 .cse1) (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53)) (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~E1~0) (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~S0~0) (fp.geq .cse0 (fp.neg .cse1)) (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~E0~0) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-03 03:58:42,269 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E0~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S0~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~S~0) (fp.leq .cse0 .cse1) (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53)) (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~E1~0) (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~S0~0) (fp.geq .cse0 (fp.neg .cse1)) (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~E0~0) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-03 03:58:44,346 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (or (not .cse0) (not .cse1)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1)))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2021-11-03 03:58:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:51,134 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-03 03:58:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:58:51,135 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 03:58:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:51,136 INFO L225 Difference]: With dead ends: 26 [2021-11-03 03:58:51,136 INFO L226 Difference]: Without dead ends: 24 [2021-11-03 03:58:51,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.7s TimeCoverageRelationStatistics Valid=37, Invalid=28, Unknown=21, NotChecked=220, Total=306 [2021-11-03 03:58:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-03 03:58:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-11-03 03:58:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-03 03:58:51,142 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-11-03 03:58:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:51,142 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-03 03:58:51,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-03 03:58:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:58:51,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:51,143 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:58:51,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:58:51,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:58:51,344 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:58:51,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:51,345 INFO L85 PathProgramCache]: Analyzing trace with hash 604505232, now seen corresponding path program 1 times [2021-11-03 03:58:51,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:58:51,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146081099] [2021-11-03 03:58:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:51,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:58:51,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:58:51,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:58:51,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8680c1-d83a-49c0-ad3e-4ae2c2a8b2e2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:59:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:01,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 03:59:01,329 INFO L286 TraceCheckSpWp]: Computing forward predicates...