./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.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_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/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_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/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_78de2824-aab4-4a6e-af2e-bb2afdfca608/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 de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:37:45,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:37:45,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:37:45,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:37:45,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:37:45,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:37:45,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:37:45,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:37:45,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:37:45,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:37:45,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:37:45,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:37:45,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:37:45,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:37:45,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:37:45,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:37:45,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:37:45,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:37:45,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:37:45,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:37:45,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:37:45,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:37:45,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:37:45,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:37:45,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:37:45,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:37:45,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:37:45,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:37:45,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:37:45,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:37:45,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:37:45,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:37:45,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:37:45,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:37:45,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:37:45,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:37:45,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:37:45,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:37:45,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:37:45,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:37:45,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:37:45,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:37:45,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:37:45,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:37:45,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:37:45,608 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:37:45,609 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:37:45,609 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:37:45,609 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:37:45,610 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:37:45,610 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:37:45,610 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:37:45,612 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:37:45,612 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:37:45,613 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:37:45,613 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:37:45,613 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:37:45,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:37:45,615 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:37:45,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:37:45,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:37:45,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:37:45,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:37:45,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:37:45,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:37:45,617 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:37:45,617 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:37:45,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:37:45,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:37:45,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:37:45,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:37:45,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:37:45,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:37:45,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:37:45,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:37:45,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:37:45,621 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:37:45,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:37:45,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:37:45,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:37:45,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:37:45,622 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d [2021-11-03 05:37:45,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:37:45,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:37:46,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:37:46,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:37:46,006 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:37:46,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-11-03 05:37:46,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data/5ba8f4a27/932e8b2a55c646698e3cb4abfe04d88e/FLAG2bb698826 [2021-11-03 05:37:46,748 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:37:46,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-11-03 05:37:46,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data/5ba8f4a27/932e8b2a55c646698e3cb4abfe04d88e/FLAG2bb698826 [2021-11-03 05:37:47,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data/5ba8f4a27/932e8b2a55c646698e3cb4abfe04d88e [2021-11-03 05:37:47,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:37:47,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:37:47,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:47,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:37:47,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:37:47,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e75ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47, skipping insertion in model container [2021-11-03 05:37:47,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:37:47,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:37:47,414 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-11-03 05:37:47,425 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-11-03 05:37:47,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:47,441 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:37:47,470 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-11-03 05:37:47,471 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-11-03 05:37:47,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:47,490 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:37:47,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47 WrapperNode [2021-11-03 05:37:47,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:47,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:37:47,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:37:47,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:37:47,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:37:47,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:37:47,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:37:47,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:37:47,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:37:47,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:37:47,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:37:47,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:37:47,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (1/1) ... [2021-11-03 05:37:47,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:37:47,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:37:47,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:37:47,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:37:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:37:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:37:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 05:37:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:37:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:37:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 05:37:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:37:48,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:37:48,935 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-03 05:37:48,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:37:48 BoogieIcfgContainer [2021-11-03 05:37:48,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:37:48,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:37:48,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:37:48,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:37:48,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:37:47" (1/3) ... [2021-11-03 05:37:48,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5ae582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:37:48, skipping insertion in model container [2021-11-03 05:37:48,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:47" (2/3) ... [2021-11-03 05:37:48,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5ae582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:37:48, skipping insertion in model container [2021-11-03 05:37:48,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:37:48" (3/3) ... [2021-11-03 05:37:48,959 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2021-11-03 05:37:48,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:37:48,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 05:37:49,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:37:49,041 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 05:37:49,042 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 05:37:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 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 05:37:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:37:49,063 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:49,064 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:49,065 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:37:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1154142022, now seen corresponding path program 1 times [2021-11-03 05:37:49,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:37:49,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548812798] [2021-11-03 05:37:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:49,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:37:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:49,298 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 05:37:49,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:37:49,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548812798] [2021-11-03 05:37:49,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548812798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:49,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:49,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:37:49,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969008642] [2021-11-03 05:37:49,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:37:49,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:37:49,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:37:49,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:37:49,329 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:49,348 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2021-11-03 05:37:49,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:37:49,350 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 05:37:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:49,360 INFO L225 Difference]: With dead ends: 36 [2021-11-03 05:37:49,360 INFO L226 Difference]: Without dead ends: 16 [2021-11-03 05:37:49,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:37:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-03 05:37:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-03 05:37:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-03 05:37:49,425 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-11-03 05:37:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:49,425 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-03 05:37:49,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:49,426 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-03 05:37:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:37:49,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:49,427 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:49,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:37:49,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:37:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:49,429 INFO L85 PathProgramCache]: Analyzing trace with hash -749756590, now seen corresponding path program 1 times [2021-11-03 05:37:49,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:37:49,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277351510] [2021-11-03 05:37:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:49,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:37:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:37:49,596 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 05:37:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:37:49,760 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 05:37:49,760 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 05:37:49,763 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:37:49,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:37:49,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:37:49,770 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 05:37:49,774 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:37:49,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:37:49 BoogieIcfgContainer [2021-11-03 05:37:49,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:37:49,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:37:49,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:37:49,825 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:37:49,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:37:48" (3/4) ... [2021-11-03 05:37:49,829 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:37:49,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:37:49,833 INFO L168 Benchmark]: Toolchain (without parser) took 2695.09 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 53.9 MB in the beginning and 72.7 MB in the end (delta: -18.8 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:49,837 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 60.3 MB in the beginning and 60.2 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:37:49,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.33 ms. Allocated memory is still 88.1 MB. Free memory was 53.7 MB in the beginning and 64.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:49,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.89 ms. Allocated memory is still 88.1 MB. Free memory was 63.8 MB in the beginning and 62.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:37:49,847 INFO L168 Benchmark]: Boogie Preprocessor took 57.33 ms. Allocated memory is still 88.1 MB. Free memory was 62.0 MB in the beginning and 60.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:49,848 INFO L168 Benchmark]: RCFGBuilder took 1320.69 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 60.3 MB in the beginning and 71.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:49,848 INFO L168 Benchmark]: TraceAbstraction took 883.08 ms. Allocated memory is still 109.1 MB. Free memory was 71.0 MB in the beginning and 73.0 MB in the end (delta: -2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:37:49,849 INFO L168 Benchmark]: Witness Printer took 5.95 ms. Allocated memory is still 109.1 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:37:49,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 60.3 MB in the beginning and 60.2 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.33 ms. Allocated memory is still 88.1 MB. Free memory was 53.7 MB in the beginning and 64.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.89 ms. Allocated memory is still 88.1 MB. Free memory was 63.8 MB in the beginning and 62.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.33 ms. Allocated memory is still 88.1 MB. Free memory was 62.0 MB in the beginning and 60.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1320.69 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 60.3 MB in the beginning and 71.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 883.08 ms. Allocated memory is still 109.1 MB. Free memory was 71.0 MB in the beginning and 73.0 MB in the end (delta: -2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.95 ms. Allocated memory is still 109.1 MB. Free memory is still 72.7 MB. 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: 76]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L57] return x != x; [L70] EXPR !isnan_float(x) && isnan_float(y) [L57] return x != x; [L70] EXPR !isnan_float(x) && isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L72] float res = fmax_float(x, y); [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L76] reach_error() - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 05:37:49,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/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_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/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_78de2824-aab4-4a6e-af2e-bb2afdfca608/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 de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:37:53,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:37:53,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:37:53,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:37:53,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:37:53,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:37:53,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:37:53,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:37:53,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:37:53,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:37:53,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:37:53,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:37:53,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:37:53,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:37:53,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:37:53,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:37:53,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:37:53,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:37:53,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:37:53,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:37:53,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:37:53,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:37:53,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:37:53,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:37:53,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:37:53,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:37:53,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:37:53,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:37:53,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:37:53,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:37:53,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:37:53,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:37:53,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:37:53,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:37:53,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:37:53,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:37:53,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:37:53,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:37:53,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:37:53,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:37:53,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:37:53,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:37:53,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:37:53,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:37:53,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:37:53,334 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:37:53,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:37:53,335 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:37:53,335 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:37:53,335 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:37:53,335 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:37:53,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:37:53,339 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:37:53,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:37:53,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:37:53,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:37:53,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:37:53,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:37:53,340 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:37:53,341 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:37:53,341 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:37:53,341 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:37:53,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:37:53,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:37:53,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:37:53,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:37:53,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:37:53,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:37:53,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:37:53,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:37:53,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:37:53,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:37:53,344 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:37:53,344 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:37:53,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:37:53,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:37:53,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:37:53,346 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d [2021-11-03 05:37:53,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:37:53,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:37:53,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:37:53,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:37:53,852 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:37:53,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-11-03 05:37:53,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data/1fefc8af0/6d13e54edeb94de0afdb8291d80df46d/FLAGce1f86564 [2021-11-03 05:37:54,707 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:37:54,712 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-11-03 05:37:54,736 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data/1fefc8af0/6d13e54edeb94de0afdb8291d80df46d/FLAGce1f86564 [2021-11-03 05:37:55,027 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/data/1fefc8af0/6d13e54edeb94de0afdb8291d80df46d [2021-11-03 05:37:55,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:37:55,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:37:55,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:55,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:37:55,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:37:55,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e44e235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55, skipping insertion in model container [2021-11-03 05:37:55,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:37:55,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:37:55,295 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-11-03 05:37:55,300 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-11-03 05:37:55,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:55,318 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:37:55,347 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-11-03 05:37:55,349 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_78de2824-aab4-4a6e-af2e-bb2afdfca608/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-11-03 05:37:55,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:55,403 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:37:55,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55 WrapperNode [2021-11-03 05:37:55,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:55,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:37:55,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:37:55,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:37:55,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:37:55,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:37:55,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:37:55,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:37:55,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:37:55,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:37:55,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:37:55,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:37:55,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (1/1) ... [2021-11-03 05:37:55,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:37:55,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:37:55,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:37:55,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:37:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:37:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:37:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:37:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:37:55,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:37:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-03 05:37:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:37:56,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:37:56,262 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-03 05:37:56,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:37:56 BoogieIcfgContainer [2021-11-03 05:37:56,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:37:56,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:37:56,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:37:56,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:37:56,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:37:55" (1/3) ... [2021-11-03 05:37:56,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ac6de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:37:56, skipping insertion in model container [2021-11-03 05:37:56,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:55" (2/3) ... [2021-11-03 05:37:56,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ac6de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:37:56, skipping insertion in model container [2021-11-03 05:37:56,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:37:56" (3/3) ... [2021-11-03 05:37:56,281 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2021-11-03 05:37:56,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:37:56,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 05:37:56,375 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:37:56,387 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 05:37:56,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 05:37:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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 05:37:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 05:37:56,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:56,432 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:56,432 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:37:56,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-11-03 05:37:56,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:56,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849192864] [2021-11-03 05:37:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:56,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:56,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:56,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:56,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:37:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:56,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:37:56,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:56,783 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 05:37:56,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:56,843 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 05:37:56,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:56,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849192864] [2021-11-03 05:37:56,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849192864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:56,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:56,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:37:56,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755778132] [2021-11-03 05:37:56,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:37:56,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:37:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:37:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:37:56,874 INFO L87 Difference]: Start difference. First operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:56,898 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-11-03 05:37:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:37:56,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 05:37:56,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:56,911 INFO L225 Difference]: With dead ends: 82 [2021-11-03 05:37:56,911 INFO L226 Difference]: Without dead ends: 43 [2021-11-03 05:37:56,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 05:37:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-03 05:37:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-03 05:37:56,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 42 states have internal predecessors, (58), 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 05:37:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-11-03 05:37:56,971 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-11-03 05:37:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:56,972 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-11-03 05:37:56,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:56,973 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-11-03 05:37:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 05:37:56,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:56,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:57,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:57,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:37:57,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:37:57,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:57,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-11-03 05:37:57,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:57,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360371413] [2021-11-03 05:37:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:57,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:57,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:57,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:57,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:37:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:57,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:37:57,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:57,480 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 05:37:57,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:57,551 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 05:37:57,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:57,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360371413] [2021-11-03 05:37:57,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360371413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:57,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:57,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:37:57,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633528949] [2021-11-03 05:37:57,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:37:57,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:37:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:37:57,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:37:57,557 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 05:37:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:57,616 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-11-03 05:37:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:37:57,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-11-03 05:37:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:57,618 INFO L225 Difference]: With dead ends: 82 [2021-11-03 05:37:57,619 INFO L226 Difference]: Without dead ends: 50 [2021-11-03 05:37:57,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:37:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-03 05:37:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-11-03 05:37:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 44 states have internal predecessors, (60), 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 05:37:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-11-03 05:37:57,635 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-11-03 05:37:57,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:57,635 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-11-03 05:37:57,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 05:37:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-11-03 05:37:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 05:37:57,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:57,637 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:57,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 05:37:57,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:37:57,839 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:37:57,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:57,840 INFO L85 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-11-03 05:37:57,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:57,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736292819] [2021-11-03 05:37:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:57,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:57,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:57,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:57,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:37:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:57,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:37:57,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:58,053 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 05:37:58,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:58,122 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 05:37:58,123 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:58,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736292819] [2021-11-03 05:37:58,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736292819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:58,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:58,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:37:58,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763052865] [2021-11-03 05:37:58,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:37:58,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:37:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:37:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:37:58,128 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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 05:37:58,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:58,215 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2021-11-03 05:37:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:37:58,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 05:37:58,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:58,218 INFO L225 Difference]: With dead ends: 96 [2021-11-03 05:37:58,218 INFO L226 Difference]: Without dead ends: 83 [2021-11-03 05:37:58,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:37:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-03 05:37:58,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2021-11-03 05:37:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 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 05:37:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-11-03 05:37:58,230 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-11-03 05:37:58,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:58,231 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-11-03 05:37:58,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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 05:37:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-11-03 05:37:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 05:37:58,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:58,233 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:58,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:58,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:37:58,455 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:37:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-11-03 05:37:58,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:58,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902709623] [2021-11-03 05:37:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:58,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:58,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:58,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:58,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:37:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:58,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 05:37:58,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:58,990 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 05:37:58,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:59,181 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 05:37:59,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:59,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902709623] [2021-11-03 05:37:59,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902709623] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:59,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:59,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-03 05:37:59,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128276494] [2021-11-03 05:37:59,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:37:59,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:37:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:37:59,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:37:59,189 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 05:37:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:59,686 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-11-03 05:37:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:37:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 21 [2021-11-03 05:37:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:59,689 INFO L225 Difference]: With dead ends: 149 [2021-11-03 05:37:59,689 INFO L226 Difference]: Without dead ends: 140 [2021-11-03 05:37:59,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:37:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-03 05:37:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-11-03 05:37:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 74 states have internal predecessors, (102), 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 05:37:59,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-11-03 05:37:59,719 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-11-03 05:37:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:59,719 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-11-03 05:37:59,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 05:37:59,721 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-11-03 05:37:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 05:37:59,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:59,724 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:59,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 05:37:59,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:37:59,940 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:37:59,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:59,941 INFO L85 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-11-03 05:37:59,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:59,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885409375] [2021-11-03 05:37:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:59,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:59,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:59,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:59,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:38:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:00,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 05:38:00,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:01,020 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 05:38:01,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:01,322 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 05:38:01,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:01,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885409375] [2021-11-03 05:38:01,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885409375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:01,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:01,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-03 05:38:01,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688540919] [2021-11-03 05:38:01,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 05:38:01,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 05:38:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:38:01,326 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 05:38:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:02,687 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-11-03 05:38:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 05:38:02,689 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 22 [2021-11-03 05:38:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:02,691 INFO L225 Difference]: With dead ends: 180 [2021-11-03 05:38:02,692 INFO L226 Difference]: Without dead ends: 178 [2021-11-03 05:38:02,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:38:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-03 05:38:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-11-03 05:38:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 88 states have internal predecessors, (121), 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 05:38:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-11-03 05:38:02,710 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-11-03 05:38:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:02,710 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-11-03 05:38:02,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 05:38:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-11-03 05:38:02,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 05:38:02,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:02,713 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:02,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:02,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:02,927 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:02,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:02,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-11-03 05:38:02,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:02,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544357532] [2021-11-03 05:38:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:02,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:02,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:02,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:02,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:38:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:03,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 05:38:03,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:03,456 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 05:38:03,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:03,614 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 05:38:03,614 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:03,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544357532] [2021-11-03 05:38:03,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544357532] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:03,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:03,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-03 05:38:03,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070988938] [2021-11-03 05:38:03,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:38:03,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:03,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:38:03,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:38:03,617 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 05:38:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:04,350 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-11-03 05:38:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:38:04,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 23 [2021-11-03 05:38:04,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:04,353 INFO L225 Difference]: With dead ends: 166 [2021-11-03 05:38:04,353 INFO L226 Difference]: Without dead ends: 131 [2021-11-03 05:38:04,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:38:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-03 05:38:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-11-03 05:38:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 88 states have internal predecessors, (120), 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 05:38:04,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-11-03 05:38:04,376 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-11-03 05:38:04,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:04,377 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-11-03 05:38:04,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 05:38:04,377 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-11-03 05:38:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 05:38:04,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:04,385 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:04,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:04,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:04,601 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:04,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:04,602 INFO L85 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-11-03 05:38:04,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:04,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554276698] [2021-11-03 05:38:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:04,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:04,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:04,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:04,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:38:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:04,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:38:04,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:04,896 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 05:38:04,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:04,979 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 05:38:04,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:04,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554276698] [2021-11-03 05:38:04,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554276698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:04,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:04,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:38:04,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150517205] [2021-11-03 05:38:04,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:38:04,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:04,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:38:04,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:38:04,984 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 05:38:05,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:05,148 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2021-11-03 05:38:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:38:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 24 [2021-11-03 05:38:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:05,150 INFO L225 Difference]: With dead ends: 157 [2021-11-03 05:38:05,150 INFO L226 Difference]: Without dead ends: 141 [2021-11-03 05:38:05,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:38:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-03 05:38:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2021-11-03 05:38:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 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 05:38:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-11-03 05:38:05,166 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-11-03 05:38:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:05,167 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-11-03 05:38:05,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 05:38:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-11-03 05:38:05,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 05:38:05,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:05,169 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:05,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:05,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:05,383 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:05,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:05,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-11-03 05:38:05,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:05,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894441926] [2021-11-03 05:38:05,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:05,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:05,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:05,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:05,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:38:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:05,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:38:05,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:05,653 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 05:38:05,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:05,713 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 05:38:05,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:05,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894441926] [2021-11-03 05:38:05,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894441926] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:05,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:05,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:38:05,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576670555] [2021-11-03 05:38:05,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:38:05,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:38:05,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:38:05,717 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 05:38:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:05,745 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-11-03 05:38:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:38:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 24 [2021-11-03 05:38:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:05,748 INFO L225 Difference]: With dead ends: 96 [2021-11-03 05:38:05,748 INFO L226 Difference]: Without dead ends: 94 [2021-11-03 05:38:05,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:38:05,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-03 05:38:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-11-03 05:38:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 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 05:38:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-11-03 05:38:05,760 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-11-03 05:38:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:05,760 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-11-03 05:38:05,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 05:38:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-11-03 05:38:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-03 05:38:05,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:05,762 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:05,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:05,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:05,987 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-11-03 05:38:05,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:05,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74901968] [2021-11-03 05:38:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:05,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:05,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:05,990 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:05,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:38:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:06,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 05:38:06,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:06,436 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 05:38:06,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:06,611 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 05:38:06,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:06,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74901968] [2021-11-03 05:38:06,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74901968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:06,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:06,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-03 05:38:06,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234210214] [2021-11-03 05:38:06,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:38:06,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:38:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:38:06,615 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 05:38:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:07,424 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-11-03 05:38:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:38:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 25 [2021-11-03 05:38:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:07,428 INFO L225 Difference]: With dead ends: 131 [2021-11-03 05:38:07,428 INFO L226 Difference]: Without dead ends: 118 [2021-11-03 05:38:07,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:38:07,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-03 05:38:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-11-03 05:38:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 88 states have internal predecessors, (118), 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 05:38:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-11-03 05:38:07,438 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-11-03 05:38:07,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:07,444 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-11-03 05:38:07,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 05:38:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-11-03 05:38:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-03 05:38:07,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:07,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:07,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:07,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:07,647 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:07,648 INFO L85 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-11-03 05:38:07,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:07,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874976757] [2021-11-03 05:38:07,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:07,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:07,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:07,650 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:07,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:38:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:07,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 05:38:07,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:08,082 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 05:38:08,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:08,239 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 05:38:08,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:08,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874976757] [2021-11-03 05:38:08,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874976757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:08,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:08,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-11-03 05:38:08,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063412505] [2021-11-03 05:38:08,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:38:08,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:38:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:38:08,241 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 05:38:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:08,837 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-11-03 05:38:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:38:08,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 25 [2021-11-03 05:38:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:08,839 INFO L225 Difference]: With dead ends: 114 [2021-11-03 05:38:08,839 INFO L226 Difference]: Without dead ends: 78 [2021-11-03 05:38:08,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:38:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-03 05:38:08,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-11-03 05:38:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 75 states have internal predecessors, (98), 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 05:38:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-11-03 05:38:08,848 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-11-03 05:38:08,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:08,848 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-11-03 05:38:08,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 05:38:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-11-03 05:38:08,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-03 05:38:08,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:08,856 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:08,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:09,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:09,071 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:09,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:09,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-11-03 05:38:09,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:09,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139457860] [2021-11-03 05:38:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:09,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:09,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:09,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:09,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:38:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:09,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 05:38:09,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:09,537 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 05:38:09,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:09,696 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 05:38:09,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:09,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139457860] [2021-11-03 05:38:09,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139457860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:09,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:09,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-03 05:38:09,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165666794] [2021-11-03 05:38:09,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:38:09,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:09,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:38:09,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:38:09,700 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 05:38:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:10,026 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-11-03 05:38:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:38:10,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 25 [2021-11-03 05:38:10,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:10,039 INFO L225 Difference]: With dead ends: 84 [2021-11-03 05:38:10,039 INFO L226 Difference]: Without dead ends: 74 [2021-11-03 05:38:10,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:38:10,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-03 05:38:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-03 05:38:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 73 states have internal predecessors, (94), 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 05:38:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-11-03 05:38:10,048 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-11-03 05:38:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:10,049 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-11-03 05:38:10,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 05:38:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-11-03 05:38:10,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 05:38:10,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:10,050 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:10,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:10,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:10,267 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:10,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:10,268 INFO L85 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-11-03 05:38:10,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:10,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44498968] [2021-11-03 05:38:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:10,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:10,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:10,271 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:10,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:38:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:10,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:38:10,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:10,741 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 05:38:10,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:11,358 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 05:38:11,359 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:11,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44498968] [2021-11-03 05:38:11,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44498968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:11,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:11,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 05:38:11,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273551017] [2021-11-03 05:38:11,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:38:11,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:11,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:38:11,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:38:11,362 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 05:38:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:11,702 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-11-03 05:38:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:38:11,703 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 26 [2021-11-03 05:38:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:11,704 INFO L225 Difference]: With dead ends: 82 [2021-11-03 05:38:11,705 INFO L226 Difference]: Without dead ends: 74 [2021-11-03 05:38:11,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:38:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-03 05:38:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-03 05:38:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 73 states have internal predecessors, (93), 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 05:38:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-11-03 05:38:11,713 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-11-03 05:38:11,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:11,713 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-11-03 05:38:11,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 05:38:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-11-03 05:38:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 05:38:11,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:11,715 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:11,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:11,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:11,919 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-11-03 05:38:11,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:11,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875233145] [2021-11-03 05:38:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:11,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:11,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:11,923 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:11,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:38:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:12,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 05:38:12,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:12,711 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 05:38:12,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:13,183 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 05:38:13,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:13,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875233145] [2021-11-03 05:38:13,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875233145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:13,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:13,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-03 05:38:13,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004443217] [2021-11-03 05:38:13,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 05:38:13,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:13,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 05:38:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:38:13,187 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 05:38:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:16,847 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-11-03 05:38:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:38:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 26 [2021-11-03 05:38:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:16,849 INFO L225 Difference]: With dead ends: 154 [2021-11-03 05:38:16,849 INFO L226 Difference]: Without dead ends: 134 [2021-11-03 05:38:16,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:38:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-03 05:38:16,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-11-03 05:38:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 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 05:38:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-11-03 05:38:16,859 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2021-11-03 05:38:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:16,859 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-11-03 05:38:16,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 05:38:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-11-03 05:38:16,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 05:38:16,860 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:16,861 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:16,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:17,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:17,075 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-11-03 05:38:17,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:17,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809042765] [2021-11-03 05:38:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:17,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:17,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:17,077 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:17,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:38:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:17,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 05:38:17,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:18,005 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 05:38:18,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:18,421 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 05:38:18,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:18,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809042765] [2021-11-03 05:38:18,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809042765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:18,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:18,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2021-11-03 05:38:18,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694802573] [2021-11-03 05:38:18,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 05:38:18,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:18,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 05:38:18,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:38:18,424 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 05:38:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:20,748 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2021-11-03 05:38:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-03 05:38:20,749 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 27 [2021-11-03 05:38:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:20,750 INFO L225 Difference]: With dead ends: 195 [2021-11-03 05:38:20,750 INFO L226 Difference]: Without dead ends: 158 [2021-11-03 05:38:20,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2021-11-03 05:38:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-03 05:38:20,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-11-03 05:38:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 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 05:38:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-11-03 05:38:20,761 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-11-03 05:38:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:20,761 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-11-03 05:38:20,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 05:38:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-11-03 05:38:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 05:38:20,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:20,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:20,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:20,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:20,980 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-11-03 05:38:20,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:20,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906844954] [2021-11-03 05:38:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:20,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:20,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:20,983 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:20,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:38:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:21,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 05:38:21,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:21,838 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 05:38:21,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:22,173 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 05:38:22,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:22,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906844954] [2021-11-03 05:38:22,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906844954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:22,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:22,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-03 05:38:22,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052672227] [2021-11-03 05:38:22,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:38:22,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:22,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:38:22,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:38:22,176 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 05:38:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:23,569 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2021-11-03 05:38:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 05:38:23,569 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 28 [2021-11-03 05:38:23,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:23,571 INFO L225 Difference]: With dead ends: 125 [2021-11-03 05:38:23,571 INFO L226 Difference]: Without dead ends: 101 [2021-11-03 05:38:23,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2021-11-03 05:38:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-03 05:38:23,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2021-11-03 05:38:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 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 05:38:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-11-03 05:38:23,580 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-11-03 05:38:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:23,581 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-11-03 05:38:23,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 05:38:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-11-03 05:38:23,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 05:38:23,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:23,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:23,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:23,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:23,791 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-11-03 05:38:23,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:23,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884058290] [2021-11-03 05:38:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:23,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:23,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:23,794 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:23,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 05:38:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:24,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:38:24,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:24,501 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 05:38:24,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:25,047 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 05:38:25,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:25,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884058290] [2021-11-03 05:38:25,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884058290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:25,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:25,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 05:38:25,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20953959] [2021-11-03 05:38:25,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:38:25,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:25,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:38:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:38:25,049 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 05:38:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:25,860 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-11-03 05:38:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:38:25,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 32 [2021-11-03 05:38:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:25,861 INFO L225 Difference]: With dead ends: 52 [2021-11-03 05:38:25,861 INFO L226 Difference]: Without dead ends: 41 [2021-11-03 05:38:25,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:38:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-03 05:38:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-03 05:38:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 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 05:38:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-11-03 05:38:25,869 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-11-03 05:38:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:25,869 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-11-03 05:38:25,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 05:38:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-11-03 05:38:25,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 05:38:25,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:25,871 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:25,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-03 05:38:26,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:26,089 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-11-03 05:38:26,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:26,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783678405] [2021-11-03 05:38:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:26,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:26,093 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:26,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:38:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:26,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 05:38:26,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:26,834 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 05:38:26,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:27,220 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 05:38:27,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:27,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783678405] [2021-11-03 05:38:27,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783678405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:27,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:27,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-03 05:38:27,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726506837] [2021-11-03 05:38:27,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 05:38:27,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:27,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 05:38:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:38:27,225 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 05:38:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:28,101 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-11-03 05:38:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:38:28,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 32 [2021-11-03 05:38:28,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:28,102 INFO L225 Difference]: With dead ends: 55 [2021-11-03 05:38:28,103 INFO L226 Difference]: Without dead ends: 41 [2021-11-03 05:38:28,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:38:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-03 05:38:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-11-03 05:38:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 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 05:38:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-11-03 05:38:28,112 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-11-03 05:38:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:28,112 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-11-03 05:38:28,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 05:38:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-11-03 05:38:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 05:38:28,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:28,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:28,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:28,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:28,321 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:28,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-11-03 05:38:28,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:28,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494283818] [2021-11-03 05:38:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:28,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:28,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:28,328 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:28,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 05:38:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:28,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:38:28,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:29,456 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 05:38:29,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:29,748 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 05:38:29,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:29,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494283818] [2021-11-03 05:38:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494283818] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:29,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:29,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-03 05:38:29,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895442715] [2021-11-03 05:38:29,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:38:29,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:38:29,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:38:29,752 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 05:38:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:30,713 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2021-11-03 05:38:30,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:38:30,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 33 [2021-11-03 05:38:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:30,715 INFO L225 Difference]: With dead ends: 79 [2021-11-03 05:38:30,715 INFO L226 Difference]: Without dead ends: 61 [2021-11-03 05:38:30,716 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:38:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-03 05:38:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2021-11-03 05:38:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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 05:38:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-11-03 05:38:30,723 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2021-11-03 05:38:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:30,724 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-11-03 05:38:30,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 05:38:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-11-03 05:38:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 05:38:30,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:30,725 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:30,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:30,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:30,939 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-11-03 05:38:30,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:30,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029843693] [2021-11-03 05:38:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:30,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:30,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:30,942 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:30,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 05:38:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:31,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:38:31,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:31,557 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 05:38:31,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:31,634 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 05:38:31,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:31,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029843693] [2021-11-03 05:38:31,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029843693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:31,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:31,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:38:31,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074927149] [2021-11-03 05:38:31,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:38:31,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:38:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:38:31,636 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 05:38:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:31,685 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-03 05:38:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:38:31,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2021-11-03 05:38:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:31,686 INFO L225 Difference]: With dead ends: 39 [2021-11-03 05:38:31,686 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 05:38:31,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:38:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 05:38:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 05:38:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 05:38:31,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-11-03 05:38:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:31,687 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 05:38:31,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 05:38:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 05:38:31,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 05:38:31,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:38:31,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:38:31,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:31,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:31,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 05:38:31,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:32,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:38:38,729 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2021-11-03 05:38:38,729 INFO L857 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2021-11-03 05:38:38,729 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 42) no Hoare annotation was computed. [2021-11-03 05:38:38,729 INFO L857 garLoopResultBuilder]: For program point L69-2(line 69) no Hoare annotation was computed. [2021-11-03 05:38:38,730 INFO L857 garLoopResultBuilder]: For program point L36-1(lines 36 42) no Hoare annotation was computed. [2021-11-03 05:38:38,730 INFO L857 garLoopResultBuilder]: For program point L69-3(lines 69 70) no Hoare annotation was computed. [2021-11-03 05:38:38,730 INFO L857 garLoopResultBuilder]: For program point L69-5(lines 69 85) no Hoare annotation was computed. [2021-11-03 05:38:38,730 INFO L857 garLoopResultBuilder]: For program point L69-7(lines 69 85) no Hoare annotation was computed. [2021-11-03 05:38:38,730 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 05:38:38,730 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-03 05:38:38,730 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-11-03 05:38:38,731 INFO L857 garLoopResultBuilder]: For program point L53-2(line 53) no Hoare annotation was computed. [2021-11-03 05:38:38,731 INFO L853 garLoopResultBuilder]: At program point L53-3(lines 45 54) the Hoare annotation is: (let ((.cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|) .cse1) (and .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y .cse2) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) .cse1 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0)) (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (not (fp.eq .cse2 .cse2)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0)))) [2021-11-03 05:38:38,731 INFO L857 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2021-11-03 05:38:38,732 INFO L857 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-11-03 05:38:38,732 INFO L860 garLoopResultBuilder]: At program point L87(lines 59 88) the Hoare annotation is: true [2021-11-03 05:38:38,732 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 48) no Hoare annotation was computed. [2021-11-03 05:38:38,732 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-11-03 05:38:38,732 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2021-11-03 05:38:38,733 INFO L857 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-11-03 05:38:38,733 INFO L857 garLoopResultBuilder]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2021-11-03 05:38:38,733 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-03 05:38:38,733 INFO L853 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-11-03 05:38:38,734 INFO L853 garLoopResultBuilder]: At program point L57-1(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short15| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-11-03 05:38:38,734 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2021-11-03 05:38:38,734 INFO L853 garLoopResultBuilder]: At program point L57-2(line 57) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short19|)) (.cse1 (not |ULTIMATE.start_main_#t~short15|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) .cse0 .cse1 (not .cse2) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 .cse1 .cse2))) [2021-11-03 05:38:38,734 INFO L853 garLoopResultBuilder]: At program point L57-3(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short18| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not |ULTIMATE.start_main_#t~short19|) (not |ULTIMATE.start_main_#t~short15|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2021-11-03 05:38:38,735 INFO L853 garLoopResultBuilder]: At program point L57-4(line 57) the Hoare annotation is: (let ((.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (or (and (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y .cse1) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) .cse2 .cse3 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0)) (and (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|) .cse2 .cse3) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq .cse1 .cse1)) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0)))) [2021-11-03 05:38:38,735 INFO L853 garLoopResultBuilder]: At program point L57-5(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and |ULTIMATE.start_main_#t~short23| (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 .cse1 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) .cse2 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0)) (and |ULTIMATE.start_main_#t~short23| .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|) .cse2))) [2021-11-03 05:38:38,735 INFO L853 garLoopResultBuilder]: At program point L57-6(line 57) the Hoare annotation is: (or (and (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0))) [2021-11-03 05:38:38,735 INFO L853 garLoopResultBuilder]: At program point L57-7(line 57) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0)) [2021-11-03 05:38:38,735 INFO L857 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2021-11-03 05:38:38,735 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 42) no Hoare annotation was computed. [2021-11-03 05:38:38,735 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 05:38:38,736 INFO L857 garLoopResultBuilder]: For program point L33-1(lines 33 42) no Hoare annotation was computed. [2021-11-03 05:38:38,736 INFO L857 garLoopResultBuilder]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2021-11-03 05:38:38,736 INFO L853 garLoopResultBuilder]: At program point L25-2(lines 25 29) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse0 (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (not .cse0) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0 (not .cse2)))) [2021-11-03 05:38:38,736 INFO L857 garLoopResultBuilder]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2021-11-03 05:38:38,736 INFO L857 garLoopResultBuilder]: For program point L25-5(lines 25 29) no Hoare annotation was computed. [2021-11-03 05:38:38,736 INFO L853 garLoopResultBuilder]: At program point L25-6(lines 25 29) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y) .cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-11-03 05:38:38,736 INFO L857 garLoopResultBuilder]: For program point L25-7(lines 22 43) no Hoare annotation was computed. [2021-11-03 05:38:38,737 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 52) no Hoare annotation was computed. [2021-11-03 05:38:38,737 INFO L857 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2021-11-03 05:38:38,737 INFO L853 garLoopResultBuilder]: At program point L42(lines 22 43) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse1 (not .cse2)) (and (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (not .cse1) .cse0 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= ULTIMATE.start_fmax_float_~x (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))))) [2021-11-03 05:38:38,737 INFO L853 garLoopResultBuilder]: At program point L42-1(lines 22 43) the Hoare annotation is: (let ((.cse2 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_fmax_float_~y .cse2)) (.cse4 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))) (or (and .cse0 (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1 (not (fp.eq .cse2 .cse2)) .cse3 .cse4 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and .cse1 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse3 (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) .cse4 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (not .cse0))))) [2021-11-03 05:38:38,738 INFO L857 garLoopResultBuilder]: For program point L75-2(lines 75 78) no Hoare annotation was computed. [2021-11-03 05:38:38,738 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-11-03 05:38:38,741 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:38,743 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:38:38,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:38:38 BoogieIcfgContainer [2021-11-03 05:38:38,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:38:38,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:38:38,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:38:38,793 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:38:38,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:37:56" (3/4) ... [2021-11-03 05:38:38,797 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 05:38:38,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-03 05:38:38,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-03 05:38:38,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 05:38:38,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 05:38:38,846 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-11-03 05:38:38,847 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2021-11-03 05:38:38,847 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(y, y) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || (((0bv32 == \result && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) [2021-11-03 05:38:38,848 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-!isnan_float(x) && isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) [2021-11-03 05:38:38,848 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2021-11-03 05:38:38,849 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2021-11-03 05:38:38,849 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && y == \result) && !~fp.eq~FLOAT(x, x)) || (((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y))) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) [2021-11-03 05:38:38,850 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) || ((((~fp.eq~FLOAT(x, x) && y == y) && !~fp.eq~FLOAT(x, x)) && y == x) && 1bv32 == \result) [2021-11-03 05:38:38,850 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.eq~FLOAT(res, y) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) || (((((~fp.eq~FLOAT(y, y) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result)) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && ~fp.eq~FLOAT(\result, x)) [2021-11-03 05:38:38,850 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && 1bv32 == \result) || ((((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) && !(0bv32 == \result)) [2021-11-03 05:38:38,851 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) [2021-11-03 05:38:38,852 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && ~fp.eq~FLOAT(\result, x)) [2021-11-03 05:38:38,852 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) [2021-11-03 05:38:38,893 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 05:38:38,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:38:38,899 INFO L168 Benchmark]: Toolchain (without parser) took 43858.21 ms. Allocated memory was 77.6 MB in the beginning and 102.8 MB in the end (delta: 25.2 MB). Free memory was 61.1 MB in the beginning and 51.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:38,900 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:38:38,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.88 ms. Allocated memory is still 77.6 MB. Free memory was 61.1 MB in the beginning and 60.9 MB in the end (delta: 276.7 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:38,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.56 ms. Allocated memory is still 77.6 MB. Free memory was 60.9 MB in the beginning and 58.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:38,901 INFO L168 Benchmark]: Boogie Preprocessor took 46.79 ms. Allocated memory is still 77.6 MB. Free memory was 58.8 MB in the beginning and 57.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:38:38,901 INFO L168 Benchmark]: RCFGBuilder took 723.72 ms. Allocated memory is still 77.6 MB. Free memory was 57.3 MB in the beginning and 42.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:38,902 INFO L168 Benchmark]: TraceAbstraction took 42523.94 ms. Allocated memory was 77.6 MB in the beginning and 102.8 MB in the end (delta: 25.2 MB). Free memory was 42.1 MB in the beginning and 56.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:38,902 INFO L168 Benchmark]: Witness Printer took 105.62 ms. Allocated memory is still 102.8 MB. Free memory was 56.6 MB in the beginning and 51.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:38,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.88 ms. Allocated memory is still 77.6 MB. Free memory was 61.1 MB in the beginning and 60.9 MB in the end (delta: 276.7 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.56 ms. Allocated memory is still 77.6 MB. Free memory was 60.9 MB in the beginning and 58.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.79 ms. Allocated memory is still 77.6 MB. Free memory was 58.8 MB in the beginning and 57.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 723.72 ms. Allocated memory is still 77.6 MB. Free memory was 57.3 MB in the beginning and 42.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 42523.94 ms. Allocated memory was 77.6 MB in the beginning and 102.8 MB in the end (delta: 25.2 MB). Free memory was 42.1 MB in the beginning and 56.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. * Witness Printer took 105.62 ms. Allocated memory is still 102.8 MB. Free memory was 56.6 MB in the beginning and 51.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 42.3s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2600 SDslu, 4552 SDs, 0 SdLazy, 2015 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 774 SyntacticMatches, 6 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 616 HoareAnnotationTreeSize, 14 FomulaSimplifications, 584044 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 78839 FormulaSimplificationTreeSizeReductionInter, 5.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 31 QuantifiedInterpolants, 3559 SizeOfPredicates, 145 NumberOfNonLiveVariables, 1646 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && 1bv32 == \result) || ((((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) && !(0bv32 == \result)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((~fp.eq~FLOAT(res, y) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) || (((((~fp.eq~FLOAT(y, y) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result)) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && y == \result) && !~fp.eq~FLOAT(x, x)) || (((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y))) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((aux-!isnan_float(x) && isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(y, y) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || (((0bv32 == \result && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) || ((((~fp.eq~FLOAT(x, x) && y == y) && !~fp.eq~FLOAT(x, x)) && y == x) && 1bv32 == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) RESULT: Ultimate proved your program to be correct! [2021-11-03 05:38:39,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de2824-aab4-4a6e-af2e-bb2afdfca608/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE