./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/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_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:27:41,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:27:41,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:27:41,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:27:41,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:27:41,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:27:41,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:27:41,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:27:41,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:27:41,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:27:41,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:27:41,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:27:41,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:27:41,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:27:41,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:27:41,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:27:41,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:27:41,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:27:41,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:27:41,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:27:41,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:27:41,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:27:41,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:27:41,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:27:41,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:27:41,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:27:41,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:27:41,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:27:41,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:27:41,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:27:41,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:27:41,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:27:41,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:27:41,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:27:41,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:27:41,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:27:41,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:27:41,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:27:41,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:27:41,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:27:41,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:27:41,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:27:41,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:27:41,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:27:41,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:27:41,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:27:41,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:27:41,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:27:41,503 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:27:41,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:27:41,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:27:41,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:27:41,504 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:27:41,504 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:27:41,504 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:27:41,505 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:27:41,505 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:27:41,505 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:27:41,505 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:27:41,505 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:27:41,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:27:41,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:27:41,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:27:41,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:27:41,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:27:41,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:27:41,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:27:41,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:27:41,507 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:27:41,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:27:41,508 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:27:41,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:27:41,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:27:41,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:27:41,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:27:41,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:27:41,509 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:27:41,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:27:41,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:27:41,509 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:27:41,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:27:41,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:27:41,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:27:41,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d [2022-12-14 13:27:41,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:27:41,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:27:41,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:27:41,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:27:41,690 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:27:41,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2022-12-14 13:27:44,220 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:27:44,363 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:27:44,364 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2022-12-14 13:27:44,368 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/data/0f1b5b3a5/68bff17955e44142864535db7c369c79/FLAG0f1b8f5ba [2022-12-14 13:27:44,794 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/data/0f1b5b3a5/68bff17955e44142864535db7c369c79 [2022-12-14 13:27:44,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:27:44,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:27:44,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:27:44,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:27:44,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:27:44,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:44,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1948536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44, skipping insertion in model container [2022-12-14 13:27:44,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:44,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:27:44,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:27:44,924 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2022-12-14 13:27:44,927 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2022-12-14 13:27:44,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:27:44,935 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:27:44,950 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2022-12-14 13:27:44,950 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2022-12-14 13:27:44,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:27:44,961 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:27:44,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44 WrapperNode [2022-12-14 13:27:44,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:27:44,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:27:44,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:27:44,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:27:44,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:44,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:44,986 INFO L138 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2022-12-14 13:27:44,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:27:44,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:27:44,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:27:44,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:27:44,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:44,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:44,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:44,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:44,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:45,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:45,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:45,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:45,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:27:45,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:27:45,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:27:45,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:27:45,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (1/1) ... [2022-12-14 13:27:45,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:27:45,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:27:45,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:27:45,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:27:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:27:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:27:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:27:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-12-14 13:27:45,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-12-14 13:27:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-12-14 13:27:45,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-12-14 13:27:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-12-14 13:27:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:27:45,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:27:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:27:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:27:45,120 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:27:45,121 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:27:45,311 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:27:45,397 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:27:45,397 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 13:27:45,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:27:45 BoogieIcfgContainer [2022-12-14 13:27:45,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:27:45,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:27:45,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:27:45,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:27:45,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:27:44" (1/3) ... [2022-12-14 13:27:45,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca6c943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:27:45, skipping insertion in model container [2022-12-14 13:27:45,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:44" (2/3) ... [2022-12-14 13:27:45,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca6c943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:27:45, skipping insertion in model container [2022-12-14 13:27:45,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:27:45" (3/3) ... [2022-12-14 13:27:45,409 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2022-12-14 13:27:45,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:27:45,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 13:27:45,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:27:45,483 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@617d0ced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:27:45,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 13:27:45,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 32 states have (on average 1.40625) internal successors, (45), 34 states have internal predecessors, (45), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 13:27:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 13:27:45,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:45,497 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:27:45,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:45,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash 92772046, now seen corresponding path program 1 times [2022-12-14 13:27:45,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:27:45,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833873119] [2022-12-14 13:27:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:45,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:27:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:27:45,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:27:45,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833873119] [2022-12-14 13:27:45,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833873119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:27:45,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:27:45,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:27:45,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991885568] [2022-12-14 13:27:45,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:45,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:27:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:27:45,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:27:45,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:45,811 INFO L87 Difference]: Start difference. First operand has 47 states, 32 states have (on average 1.40625) internal successors, (45), 34 states have internal predecessors, (45), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:27:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:45,883 INFO L93 Difference]: Finished difference Result 89 states and 125 transitions. [2022-12-14 13:27:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:27:45,886 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-12-14 13:27:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:45,893 INFO L225 Difference]: With dead ends: 89 [2022-12-14 13:27:45,893 INFO L226 Difference]: Without dead ends: 53 [2022-12-14 13:27:45,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:27:45,900 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:45,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:27:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-14 13:27:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-12-14 13:27:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 13:27:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2022-12-14 13:27:45,934 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 24 [2022-12-14 13:27:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:45,934 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2022-12-14 13:27:45,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:27:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2022-12-14 13:27:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 13:27:45,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:45,936 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 13:27:45,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:27:45,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:45,937 INFO L85 PathProgramCache]: Analyzing trace with hash 291622722, now seen corresponding path program 1 times [2022-12-14 13:27:45,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:27:45,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718684966] [2022-12-14 13:27:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:45,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:27:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:27:45,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:27:45,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718684966] [2022-12-14 13:27:45,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718684966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:27:45,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:27:45,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:27:45,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058686603] [2022-12-14 13:27:45,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:45,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:27:45,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:27:45,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:27:45,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:27:45,995 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 13:27:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:46,016 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2022-12-14 13:27:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:27:46,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-12-14 13:27:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:46,018 INFO L225 Difference]: With dead ends: 49 [2022-12-14 13:27:46,018 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 13:27:46,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:27:46,019 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:46,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:27:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 13:27:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-14 13:27:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 13:27:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2022-12-14 13:27:46,025 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 29 [2022-12-14 13:27:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:46,026 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2022-12-14 13:27:46,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 13:27:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2022-12-14 13:27:46,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 13:27:46,028 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:46,028 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 13:27:46,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:27:46,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:46,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:46,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1894378411, now seen corresponding path program 1 times [2022-12-14 13:27:46,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:27:46,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380421061] [2022-12-14 13:27:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:46,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:27:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:27:46,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:27:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:27:46,101 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:27:46,101 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:27:46,102 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 13:27:46,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 13:27:46,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:27:46,107 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 13:27:46,109 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:27:46,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:27:46 BoogieIcfgContainer [2022-12-14 13:27:46,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:27:46,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:27:46,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:27:46,128 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:27:46,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:27:45" (3/4) ... [2022-12-14 13:27:46,131 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 13:27:46,131 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:27:46,132 INFO L158 Benchmark]: Toolchain (without parser) took 1334.04ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 85.5MB in the beginning and 89.4MB in the end (delta: -3.9MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-12-14 13:27:46,132 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:27:46,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.57ms. Allocated memory is still 119.5MB. Free memory was 85.5MB in the beginning and 74.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:27:46,133 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.86ms. Allocated memory is still 119.5MB. Free memory was 74.4MB in the beginning and 72.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:27:46,133 INFO L158 Benchmark]: Boogie Preprocessor took 18.39ms. Allocated memory is still 119.5MB. Free memory was 72.6MB in the beginning and 71.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:27:46,133 INFO L158 Benchmark]: RCFGBuilder took 394.45ms. Allocated memory is still 119.5MB. Free memory was 71.0MB in the beginning and 51.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 13:27:46,134 INFO L158 Benchmark]: TraceAbstraction took 725.21ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 51.2MB in the beginning and 89.4MB in the end (delta: -38.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:27:46,134 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 151.0MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:27:46,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.57ms. Allocated memory is still 119.5MB. Free memory was 85.5MB in the beginning and 74.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.86ms. Allocated memory is still 119.5MB. Free memory was 74.4MB in the beginning and 72.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.39ms. Allocated memory is still 119.5MB. Free memory was 72.6MB in the beginning and 71.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 394.45ms. Allocated memory is still 119.5MB. Free memory was 71.0MB in the beginning and 51.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 725.21ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 51.2MB in the beginning and 89.4MB in the end (delta: -38.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 151.0MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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(); [L69] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578696] [L57] return x != x; [L69] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, x=4286578696] [L69] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, x=4286578696] [L69] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578697] [L57] return x != x; [L69] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L69] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L72] CALL, EXPR fmax_float(x, y) [L46] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696] [L23] __uint32_t w; VAL [\old(x)=4286578696, x=4286578696] [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] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696, \old(y)=4286578697, __fpclassify_float(x)=0, x=4286578696, y=4286578697] [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; VAL [\old(x)=4286578696, \old(y)=4286578697, \result=4286578697, x=4286578696, y=4286578697] [L72] RET, EXPR fmax_float(x, y) [L72] float res = fmax_float(x, y); [L75] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578696] [L57] return x != x; [L75] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, res=4286578697, x=4286578696, y=4286578697] [L75] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, res=4286578697, x=4286578696, y=4286578697] [L75] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578697] [L57] return x != x; [L75] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578697, x=4286578696, y=4286578697] [L75] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578697, x=4286578696, y=4286578697] [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L76] reach_error() VAL [res=4286578697, x=4286578696, y=4286578697] - 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 3 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 250 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 110 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 13:27:46,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/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_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:27:47,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:27:47,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:27:47,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:27:47,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:27:47,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:27:47,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:27:47,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:27:47,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:27:47,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:27:47,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:27:47,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:27:47,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:27:47,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:27:47,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:27:47,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:27:47,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:27:47,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:27:47,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:27:47,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:27:47,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:27:47,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:27:47,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:27:47,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:27:47,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:27:47,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:27:47,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:27:47,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:27:47,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:27:47,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:27:47,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:27:47,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:27:47,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:27:47,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:27:47,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:27:47,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:27:47,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:27:47,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:27:47,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:27:47,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:27:47,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:27:47,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 13:27:47,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:27:47,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:27:47,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:27:47,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:27:47,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:27:47,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:27:47,898 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:27:47,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:27:47,899 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:27:47,899 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:27:47,899 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:27:47,899 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:27:47,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:27:47,900 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:27:47,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:27:47,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:27:47,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:27:47,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:27:47,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:27:47,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 13:27:47,900 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 13:27:47,901 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 13:27:47,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:27:47,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:27:47,901 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:27:47,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:27:47,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:27:47,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 13:27:47,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:27:47,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:27:47,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:27:47,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:27:47,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:27:47,902 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 13:27:47,902 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 13:27:47,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:27:47,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:27:47,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 13:27:47,903 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_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d [2022-12-14 13:27:48,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:27:48,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:27:48,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:27:48,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:27:48,134 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:27:48,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2022-12-14 13:27:50,696 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:27:50,859 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:27:50,859 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2022-12-14 13:27:50,865 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/data/24cd6cd3c/4aacf17cd94e44aa9de2a64a1b009cd8/FLAGf1c1e84c3 [2022-12-14 13:27:50,876 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/data/24cd6cd3c/4aacf17cd94e44aa9de2a64a1b009cd8 [2022-12-14 13:27:50,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:27:50,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:27:50,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:27:50,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:27:50,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:27:50,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:27:50" (1/1) ... [2022-12-14 13:27:50,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cf4aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:50, skipping insertion in model container [2022-12-14 13:27:50,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:27:50" (1/1) ... [2022-12-14 13:27:50,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:27:50,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:27:51,049 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2022-12-14 13:27:51,053 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2022-12-14 13:27:51,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:27:51,067 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:27:51,090 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2022-12-14 13:27:51,091 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2022-12-14 13:27:51,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:27:51,109 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:27:51,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51 WrapperNode [2022-12-14 13:27:51,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:27:51,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:27:51,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:27:51,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:27:51,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,148 INFO L138 Inliner]: procedures = 21, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2022-12-14 13:27:51,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:27:51,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:27:51,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:27:51,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:27:51,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:27:51,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:27:51,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:27:51,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:27:51,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (1/1) ... [2022-12-14 13:27:51,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:27:51,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:27:51,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:27:51,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:27:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-12-14 13:27:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-12-14 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-12-14 13:27:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-12-14 13:27:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 13:27:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:27:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:27:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-12-14 13:27:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:27:51,321 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:27:51,323 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:27:51,516 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:27:51,522 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:27:51,522 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 13:27:51,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:27:51 BoogieIcfgContainer [2022-12-14 13:27:51,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:27:51,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:27:51,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:27:51,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:27:51,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:27:50" (1/3) ... [2022-12-14 13:27:51,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6066a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:27:51, skipping insertion in model container [2022-12-14 13:27:51,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:27:51" (2/3) ... [2022-12-14 13:27:51,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6066a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:27:51, skipping insertion in model container [2022-12-14 13:27:51,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:27:51" (3/3) ... [2022-12-14 13:27:51,533 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2022-12-14 13:27:51,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:27:51,552 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 13:27:51,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:27:51,605 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d1fe553, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:27:51,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 13:27:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 13:27:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 13:27:51,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:51,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:27:51,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:51,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1842866032, now seen corresponding path program 1 times [2022-12-14 13:27:51,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:27:51,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804855824] [2022-12-14 13:27:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:51,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:51,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:27:51,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:27:51,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 13:27:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:51,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 13:27:51,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:27:51,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:27:51,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:27:51,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804855824] [2022-12-14 13:27:51,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804855824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:27:51,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:27:51,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:27:51,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809296050] [2022-12-14 13:27:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:51,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:27:51,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:27:51,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:27:51,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:27:51,790 INFO L87 Difference]: Start difference. First operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:27:51,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:51,807 INFO L93 Difference]: Finished difference Result 89 states and 128 transitions. [2022-12-14 13:27:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:27:51,809 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-12-14 13:27:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:51,817 INFO L225 Difference]: With dead ends: 89 [2022-12-14 13:27:51,817 INFO L226 Difference]: Without dead ends: 49 [2022-12-14 13:27:51,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:27:51,824 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:51,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:27:51,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-14 13:27:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-12-14 13:27:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 13:27:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2022-12-14 13:27:51,862 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 27 [2022-12-14 13:27:51,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:51,863 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2022-12-14 13:27:51,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:27:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2022-12-14 13:27:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 13:27:51,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:51,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:27:51,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:27:52,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:52,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:52,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:52,068 INFO L85 PathProgramCache]: Analyzing trace with hash -207460078, now seen corresponding path program 1 times [2022-12-14 13:27:52,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:27:52,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520014930] [2022-12-14 13:27:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:52,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:52,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:27:52,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:27:52,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 13:27:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:52,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:27:52,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:27:52,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:27:52,267 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:27:52,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520014930] [2022-12-14 13:27:52,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520014930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:27:52,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:27:52,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:27:52,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722212731] [2022-12-14 13:27:52,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:52,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:27:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:27:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:27:52,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:52,270 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:27:52,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:52,306 INFO L93 Difference]: Finished difference Result 92 states and 125 transitions. [2022-12-14 13:27:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:27:52,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-12-14 13:27:52,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:52,308 INFO L225 Difference]: With dead ends: 92 [2022-12-14 13:27:52,308 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 13:27:52,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:27:52,314 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 16 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:52,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 182 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:27:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 13:27:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2022-12-14 13:27:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 13:27:52,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2022-12-14 13:27:52,320 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 28 [2022-12-14 13:27:52,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:52,320 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2022-12-14 13:27:52,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:27:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2022-12-14 13:27:52,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 13:27:52,321 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:52,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 13:27:52,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 13:27:52,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:52,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:52,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash 318152461, now seen corresponding path program 1 times [2022-12-14 13:27:52,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:27:52,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012910622] [2022-12-14 13:27:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:52,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:52,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:27:52,532 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:27:52,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 13:27:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:52,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:27:52,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:27:52,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:27:52,745 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:27:52,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012910622] [2022-12-14 13:27:52,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012910622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:27:52,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:27:52,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:27:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421942407] [2022-12-14 13:27:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:52,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:27:52,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:27:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:27:52,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:52,747 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:27:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:52,807 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2022-12-14 13:27:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:27:52,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-12-14 13:27:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:52,809 INFO L225 Difference]: With dead ends: 74 [2022-12-14 13:27:52,809 INFO L226 Difference]: Without dead ends: 54 [2022-12-14 13:27:52,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:52,810 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:52,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:27:52,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-14 13:27:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-12-14 13:27:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-12-14 13:27:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-12-14 13:27:52,816 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 33 [2022-12-14 13:27:52,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:52,817 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-12-14 13:27:52,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:27:52,817 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-12-14 13:27:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 13:27:52,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:52,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 13:27:52,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 13:27:53,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:53,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash 810873816, now seen corresponding path program 1 times [2022-12-14 13:27:53,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:27:53,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336970289] [2022-12-14 13:27:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:53,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:53,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:27:53,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:27:53,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 13:27:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:53,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:27:53,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:27:53,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:27:53,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:27:53,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336970289] [2022-12-14 13:27:53,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336970289] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:27:53,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:27:53,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:27:53,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500647781] [2022-12-14 13:27:53,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:53,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:27:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:27:53,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:27:53,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:53,143 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:27:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:53,174 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-12-14 13:27:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:27:53,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-12-14 13:27:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:53,175 INFO L225 Difference]: With dead ends: 77 [2022-12-14 13:27:53,175 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 13:27:53,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:53,176 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:53,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:27:53,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 13:27:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-12-14 13:27:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-12-14 13:27:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-12-14 13:27:53,182 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 34 [2022-12-14 13:27:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:53,182 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-12-14 13:27:53,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:27:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-12-14 13:27:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 13:27:53,184 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:53,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 13:27:53,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-14 13:27:53,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:53,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:53,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2026721905, now seen corresponding path program 1 times [2022-12-14 13:27:53,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:27:53,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110551097] [2022-12-14 13:27:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:53,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:53,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:27:53,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:27:53,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 13:27:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:53,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:27:53,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:27:53,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:27:53,630 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:27:53,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110551097] [2022-12-14 13:27:53,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110551097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:27:53,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:27:53,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:27:53,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684309935] [2022-12-14 13:27:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:53,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:27:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:27:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:27:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:53,632 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:27:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:53,683 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-12-14 13:27:53,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:27:53,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-12-14 13:27:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:53,685 INFO L225 Difference]: With dead ends: 77 [2022-12-14 13:27:53,685 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 13:27:53,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:53,686 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:53,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:27:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 13:27:53,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-12-14 13:27:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-12-14 13:27:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-12-14 13:27:53,691 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 35 [2022-12-14 13:27:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:53,691 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-12-14 13:27:53,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:27:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-12-14 13:27:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 13:27:53,693 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:53,693 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 13:27:53,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-14 13:27:53,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:53,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -110305028, now seen corresponding path program 1 times [2022-12-14 13:27:53,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:27:53,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717194294] [2022-12-14 13:27:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:53,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:53,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:27:53,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:27:53,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 13:27:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:54,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:27:54,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:27:54,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:27:54,038 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:27:54,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717194294] [2022-12-14 13:27:54,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717194294] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:27:54,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:27:54,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:27:54,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210008589] [2022-12-14 13:27:54,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:54,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:27:54,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:27:54,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:27:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:54,040 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:27:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:54,092 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-12-14 13:27:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:27:54,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2022-12-14 13:27:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:54,093 INFO L225 Difference]: With dead ends: 77 [2022-12-14 13:27:54,093 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 13:27:54,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:27:54,094 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:54,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:27:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 13:27:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-12-14 13:27:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-12-14 13:27:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-12-14 13:27:54,099 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 36 [2022-12-14 13:27:54,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:54,099 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-12-14 13:27:54,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:27:54,099 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-12-14 13:27:54,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 13:27:54,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:54,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 13:27:54,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 13:27:54,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:54,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:54,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:54,303 INFO L85 PathProgramCache]: Analyzing trace with hash -403708035, now seen corresponding path program 1 times [2022-12-14 13:27:54,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:27:54,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718587766] [2022-12-14 13:27:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:54,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:54,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:27:54,308 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:27:54,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 13:27:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:54,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:27:54,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 13:27:54,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:27:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:27:54,893 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:27:54,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718587766] [2022-12-14 13:27:54,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718587766] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:27:54,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1199346228] [2022-12-14 13:27:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:54,894 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:27:54,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:27:54,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:27:54,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 13:27:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:55,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:27:55,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 13:27:55,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:27:55,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1199346228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:27:55,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:27:55,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 9] total 14 [2022-12-14 13:27:55,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458859785] [2022-12-14 13:27:55,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:55,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:27:55,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:27:55,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:27:55,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:27:55,044 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 13:27:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:55,053 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2022-12-14 13:27:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:27:55,053 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), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2022-12-14 13:27:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:55,054 INFO L225 Difference]: With dead ends: 57 [2022-12-14 13:27:55,054 INFO L226 Difference]: Without dead ends: 55 [2022-12-14 13:27:55,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:27:55,055 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:55,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:27:55,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-14 13:27:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-12-14 13:27:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 40 states have (on average 1.3) internal successors, (52), 41 states have internal predecessors, (52), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-12-14 13:27:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2022-12-14 13:27:55,061 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 36 [2022-12-14 13:27:55,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:55,061 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2022-12-14 13:27:55,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 13:27:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2022-12-14 13:27:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-14 13:27:55,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:55,063 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-12-14 13:27:55,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-12-14 13:27:55,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 13:27:55,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:55,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:27:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:27:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash -987503231, now seen corresponding path program 1 times [2022-12-14 13:27:55,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:27:55,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991267410] [2022-12-14 13:27:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:55,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:27:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:27:55,472 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:27:55,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 13:27:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:55,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:27:55,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:27:55,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:27:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:27:55,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:27:55,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991267410] [2022-12-14 13:27:55,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991267410] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:27:55,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [231434378] [2022-12-14 13:27:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:55,968 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:27:55,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:27:55,969 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:27:55,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-14 13:27:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:56,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:27:56,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:27:56,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:27:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:27:56,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [231434378] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:27:56,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781751036] [2022-12-14 13:27:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:27:56,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:27:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:27:56,456 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:27:56,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 13:27:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:27:56,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 13:27:56,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:27:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:27:56,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:27:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:27:59,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781751036] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 13:27:59,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2022-12-14 13:27:59,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10, 9, 9, 14] total 26 [2022-12-14 13:27:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404551101] [2022-12-14 13:27:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:27:59,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 13:27:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:27:59,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 13:27:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-12-14 13:27:59,191 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-14 13:27:59,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:27:59,762 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2022-12-14 13:27:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:27:59,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2022-12-14 13:27:59,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:27:59,763 INFO L225 Difference]: With dead ends: 73 [2022-12-14 13:27:59,763 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 13:27:59,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2022-12-14 13:27:59,764 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 53 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:27:59,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 296 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:27:59,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 13:27:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-12-14 13:27:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 13:27:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2022-12-14 13:27:59,769 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 41 [2022-12-14 13:27:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:27:59,769 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2022-12-14 13:27:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-14 13:27:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2022-12-14 13:27:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 13:27:59,770 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:27:59,770 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-12-14 13:27:59,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 13:27:59,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-12-14 13:28:00,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 13:28:00,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:00,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1731684142, now seen corresponding path program 1 times [2022-12-14 13:28:00,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:00,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084403594] [2022-12-14 13:28:00,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:00,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:00,383 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:00,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 13:28:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:00,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:28:00,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 13:28:00,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:28:00,774 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:00,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084403594] [2022-12-14 13:28:00,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084403594] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:00,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [83022481] [2022-12-14 13:28:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:00,774 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:00,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:28:00,775 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:28:00,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-12-14 13:28:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:00,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:28:00,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 13:28:00,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:00,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [83022481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:00,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:28:00,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 9] total 14 [2022-12-14 13:28:00,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149959278] [2022-12-14 13:28:00,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:00,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:28:00,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:28:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:28:00,901 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 13:28:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:00,909 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2022-12-14 13:28:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:28:00,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-12-14 13:28:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:00,911 INFO L225 Difference]: With dead ends: 64 [2022-12-14 13:28:00,911 INFO L226 Difference]: Without dead ends: 61 [2022-12-14 13:28:00,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:28:00,912 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:00,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:28:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-14 13:28:00,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-12-14 13:28:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 45 states have internal predecessors, (56), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 13:28:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2022-12-14 13:28:00,919 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 43 [2022-12-14 13:28:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:00,919 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-12-14 13:28:00,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 13:28:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2022-12-14 13:28:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 13:28:00,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:00,921 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-12-14 13:28:00,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-12-14 13:28:01,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 13:28:01,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:01,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:01,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:01,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1178252102, now seen corresponding path program 1 times [2022-12-14 13:28:01,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:01,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213227103] [2022-12-14 13:28:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:01,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:01,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:01,328 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:01,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 13:28:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:01,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:28:01,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:28:01,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:01,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:01,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213227103] [2022-12-14 13:28:01,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213227103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:01,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:01,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:28:01,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495035445] [2022-12-14 13:28:01,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:01,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:28:01,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:01,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:28:01,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:01,447 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 13:28:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:01,472 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2022-12-14 13:28:01,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:28:01,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-12-14 13:28:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:01,473 INFO L225 Difference]: With dead ends: 85 [2022-12-14 13:28:01,473 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 13:28:01,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:01,474 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:01,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:28:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 13:28:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-12-14 13:28:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 12 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (16), 14 states have call predecessors, (16), 12 states have call successors, (16) [2022-12-14 13:28:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-12-14 13:28:01,481 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 46 [2022-12-14 13:28:01,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:01,482 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-12-14 13:28:01,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 13:28:01,482 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-12-14 13:28:01,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 13:28:01,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:01,483 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-12-14 13:28:01,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-14 13:28:01,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:01,684 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:01,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash -101611576, now seen corresponding path program 1 times [2022-12-14 13:28:01,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:01,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165863830] [2022-12-14 13:28:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:01,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:01,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:01,690 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:01,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 13:28:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:01,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 13:28:01,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 13:28:02,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 13:28:03,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165863830] [2022-12-14 13:28:03,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165863830] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [358160410] [2022-12-14 13:28:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:03,604 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:28:03,605 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:28:03,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-12-14 13:28:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:03,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 13:28:03,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:28:03,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 13:28:04,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [358160410] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120895740] [2022-12-14 13:28:04,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:04,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:28:04,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:28:04,743 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:28:04,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 13:28:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:04,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 13:28:04,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:28:05,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:06,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120895740] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:28:06,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 13:28:06,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10, 10, 11] total 33 [2022-12-14 13:28:06,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018645626] [2022-12-14 13:28:06,530 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 13:28:06,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 13:28:06,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:06,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 13:28:06,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 13:28:06,532 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) [2022-12-14 13:28:08,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 13:28:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:11,328 INFO L93 Difference]: Finished difference Result 174 states and 232 transitions. [2022-12-14 13:28:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 13:28:11,328 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) Word has length 46 [2022-12-14 13:28:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:11,330 INFO L225 Difference]: With dead ends: 174 [2022-12-14 13:28:11,330 INFO L226 Difference]: Without dead ends: 136 [2022-12-14 13:28:11,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=441, Invalid=2639, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 13:28:11,333 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 333 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:11,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 983 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 13:28:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-12-14 13:28:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 77. [2022-12-14 13:28:11,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 54 states have internal predecessors, (70), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (23), 20 states have call predecessors, (23), 16 states have call successors, (23) [2022-12-14 13:28:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2022-12-14 13:28:11,340 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 46 [2022-12-14 13:28:11,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:11,340 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2022-12-14 13:28:11,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) [2022-12-14 13:28:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2022-12-14 13:28:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 13:28:11,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:11,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 13:28:11,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 13:28:11,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-14 13:28:11,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-12-14 13:28:11,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:11,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:11,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1695459100, now seen corresponding path program 1 times [2022-12-14 13:28:11,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:11,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498590308] [2022-12-14 13:28:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:11,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:11,949 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:11,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 13:28:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:12,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:28:12,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 13:28:12,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:12,077 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:12,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498590308] [2022-12-14 13:28:12,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498590308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:12,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:12,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:28:12,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544024205] [2022-12-14 13:28:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:12,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:28:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:28:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:12,079 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 13:28:12,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:12,113 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2022-12-14 13:28:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:28:12,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2022-12-14 13:28:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:12,114 INFO L225 Difference]: With dead ends: 102 [2022-12-14 13:28:12,114 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 13:28:12,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:12,115 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:12,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:28:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 13:28:12,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-12-14 13:28:12,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 16 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (27), 20 states have call predecessors, (27), 16 states have call successors, (27) [2022-12-14 13:28:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2022-12-14 13:28:12,120 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 48 [2022-12-14 13:28:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:12,120 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2022-12-14 13:28:12,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 13:28:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2022-12-14 13:28:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 13:28:12,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:12,121 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1] [2022-12-14 13:28:12,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 13:28:12,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:12,322 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:12,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:12,323 INFO L85 PathProgramCache]: Analyzing trace with hash -754173183, now seen corresponding path program 1 times [2022-12-14 13:28:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:12,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141519726] [2022-12-14 13:28:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:12,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:12,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:12,328 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:12,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-14 13:28:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:12,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:28:12,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:28:12,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:28:12,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:12,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141519726] [2022-12-14 13:28:12,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141519726] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:12,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1705341689] [2022-12-14 13:28:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:12,866 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:12,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:28:12,867 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:28:12,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 13:28:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:13,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 13:28:13,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 13:28:13,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:28:15,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1705341689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:15,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432604771] [2022-12-14 13:28:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:15,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:28:15,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:28:15,041 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:28:15,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 13:28:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:15,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:28:15,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:28:15,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:28:15,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432604771] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:15,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:28:15,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9, 10, 8, 9] total 22 [2022-12-14 13:28:15,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30153742] [2022-12-14 13:28:15,271 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:28:15,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 13:28:15,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:15,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 13:28:15,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-12-14 13:28:15,273 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 13:28:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:16,300 INFO L93 Difference]: Finished difference Result 146 states and 205 transitions. [2022-12-14 13:28:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 13:28:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) Word has length 48 [2022-12-14 13:28:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:16,302 INFO L225 Difference]: With dead ends: 146 [2022-12-14 13:28:16,302 INFO L226 Difference]: Without dead ends: 120 [2022-12-14 13:28:16,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=1112, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 13:28:16,303 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 157 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:16,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 967 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 13:28:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-12-14 13:28:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 99. [2022-12-14 13:28:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-12-14 13:28:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2022-12-14 13:28:16,310 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 48 [2022-12-14 13:28:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:16,310 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2022-12-14 13:28:16,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 13:28:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2022-12-14 13:28:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 13:28:16,311 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:16,311 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-12-14 13:28:16,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-14 13:28:16,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 13:28:16,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-12-14 13:28:16,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:16,913 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:16,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1891599591, now seen corresponding path program 1 times [2022-12-14 13:28:16,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:16,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446110075] [2022-12-14 13:28:16,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:16,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:16,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:16,916 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:16,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 13:28:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:16,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:28:16,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:28:17,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:17,094 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:17,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446110075] [2022-12-14 13:28:17,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446110075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:17,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:17,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 13:28:17,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692788098] [2022-12-14 13:28:17,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:17,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 13:28:17,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 13:28:17,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:28:17,095 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 13:28:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:17,344 INFO L93 Difference]: Finished difference Result 165 states and 228 transitions. [2022-12-14 13:28:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:28:17,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2022-12-14 13:28:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:17,346 INFO L225 Difference]: With dead ends: 165 [2022-12-14 13:28:17,346 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 13:28:17,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-12-14 13:28:17,347 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 53 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:17,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 397 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:28:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 13:28:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2022-12-14 13:28:17,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-12-14 13:28:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 142 transitions. [2022-12-14 13:28:17,355 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 142 transitions. Word has length 48 [2022-12-14 13:28:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:17,355 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 142 transitions. [2022-12-14 13:28:17,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 13:28:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2022-12-14 13:28:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 13:28:17,356 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:17,356 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-12-14 13:28:17,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-12-14 13:28:17,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:17,557 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:17,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:17,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1319000567, now seen corresponding path program 1 times [2022-12-14 13:28:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:17,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637063629] [2022-12-14 13:28:17,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:17,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:17,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:17,562 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:17,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-14 13:28:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:17,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:28:17,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 13:28:17,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:17,650 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:17,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637063629] [2022-12-14 13:28:17,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637063629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:17,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:17,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:28:17,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407165725] [2022-12-14 13:28:17,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:17,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:28:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:28:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:17,651 INFO L87 Difference]: Start difference. First operand 99 states and 142 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 13:28:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:17,680 INFO L93 Difference]: Finished difference Result 136 states and 192 transitions. [2022-12-14 13:28:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:28:17,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-12-14 13:28:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:17,682 INFO L225 Difference]: With dead ends: 136 [2022-12-14 13:28:17,682 INFO L226 Difference]: Without dead ends: 103 [2022-12-14 13:28:17,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:17,683 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:17,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:28:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-14 13:28:17,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2022-12-14 13:28:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-12-14 13:28:17,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 142 transitions. [2022-12-14 13:28:17,691 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 142 transitions. Word has length 49 [2022-12-14 13:28:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:17,691 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 142 transitions. [2022-12-14 13:28:17,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 13:28:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2022-12-14 13:28:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 13:28:17,693 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:17,693 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-12-14 13:28:17,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-12-14 13:28:17,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:17,894 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:17,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash 584647616, now seen corresponding path program 1 times [2022-12-14 13:28:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:17,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457698733] [2022-12-14 13:28:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:17,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:17,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:17,899 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:17,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-14 13:28:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:17,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:28:17,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 13:28:17,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:17,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:17,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457698733] [2022-12-14 13:28:17,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457698733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:17,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:17,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:28:17,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268796883] [2022-12-14 13:28:17,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:17,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:28:17,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:17,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:28:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:17,996 INFO L87 Difference]: Start difference. First operand 99 states and 142 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 13:28:18,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:18,030 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2022-12-14 13:28:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:28:18,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-12-14 13:28:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:18,032 INFO L225 Difference]: With dead ends: 134 [2022-12-14 13:28:18,032 INFO L226 Difference]: Without dead ends: 101 [2022-12-14 13:28:18,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:18,033 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:18,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:28:18,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-14 13:28:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-12-14 13:28:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 68 states have internal predecessors, (83), 22 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (30), 26 states have call predecessors, (30), 22 states have call successors, (30) [2022-12-14 13:28:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2022-12-14 13:28:18,042 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 50 [2022-12-14 13:28:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:18,042 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2022-12-14 13:28:18,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 13:28:18,042 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2022-12-14 13:28:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 13:28:18,043 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:18,043 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-12-14 13:28:18,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-12-14 13:28:18,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:18,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:18,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:18,246 INFO L85 PathProgramCache]: Analyzing trace with hash -412424737, now seen corresponding path program 1 times [2022-12-14 13:28:18,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:18,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68681042] [2022-12-14 13:28:18,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:18,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:18,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:18,252 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:18,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-14 13:28:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:18,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 13:28:18,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 13:28:18,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:18,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:18,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68681042] [2022-12-14 13:28:18,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68681042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:18,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:18,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-14 13:28:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134961929] [2022-12-14 13:28:18,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:18,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 13:28:18,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:18,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 13:28:18,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:28:18,822 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 13:28:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:19,673 INFO L93 Difference]: Finished difference Result 106 states and 150 transitions. [2022-12-14 13:28:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 13:28:19,673 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2022-12-14 13:28:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:19,674 INFO L225 Difference]: With dead ends: 106 [2022-12-14 13:28:19,674 INFO L226 Difference]: Without dead ends: 89 [2022-12-14 13:28:19,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-12-14 13:28:19,674 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 48 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:19,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 489 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 13:28:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-14 13:28:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2022-12-14 13:28:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 60 states have internal predecessors, (74), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (25), 22 states have call predecessors, (25), 18 states have call successors, (25) [2022-12-14 13:28:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2022-12-14 13:28:19,681 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 50 [2022-12-14 13:28:19,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:19,681 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2022-12-14 13:28:19,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 13:28:19,681 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2022-12-14 13:28:19,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 13:28:19,682 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:19,682 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 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] [2022-12-14 13:28:19,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-12-14 13:28:19,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:19,883 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:19,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash 992710810, now seen corresponding path program 1 times [2022-12-14 13:28:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:19,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492884407] [2022-12-14 13:28:19,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:19,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:19,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:19,889 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:19,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-14 13:28:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:19,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:28:19,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:28:20,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 13:28:20,273 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492884407] [2022-12-14 13:28:20,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492884407] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [142403584] [2022-12-14 13:28:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:20,273 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:20,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:28:20,274 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:28:20,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-12-14 13:28:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:20,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 13:28:20,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:28:20,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 13:28:21,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [142403584] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:21,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272649525] [2022-12-14 13:28:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:21,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:28:21,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:28:21,114 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:28:21,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-14 13:28:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:21,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 13:28:21,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:28:21,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 13:28:22,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272649525] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:22,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:28:22,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 10, 12] total 17 [2022-12-14 13:28:22,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141543926] [2022-12-14 13:28:22,496 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:28:22,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 13:28:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 13:28:22,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-12-14 13:28:22,497 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 13:28:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:23,000 INFO L93 Difference]: Finished difference Result 130 states and 174 transitions. [2022-12-14 13:28:23,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 13:28:23,000 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 53 [2022-12-14 13:28:23,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:23,001 INFO L225 Difference]: With dead ends: 130 [2022-12-14 13:28:23,001 INFO L226 Difference]: Without dead ends: 95 [2022-12-14 13:28:23,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-12-14 13:28:23,002 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 87 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:23,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 519 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:28:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-14 13:28:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2022-12-14 13:28:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 57 states have internal predecessors, (68), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (24), 21 states have call predecessors, (24), 17 states have call successors, (24) [2022-12-14 13:28:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2022-12-14 13:28:23,009 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 53 [2022-12-14 13:28:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:23,009 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2022-12-14 13:28:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 13:28:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2022-12-14 13:28:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 13:28:23,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:23,009 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:28:23,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2022-12-14 13:28:23,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-14 13:28:23,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-12-14 13:28:23,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:23,612 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1377347757, now seen corresponding path program 1 times [2022-12-14 13:28:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:23,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330940228] [2022-12-14 13:28:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:23,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:23,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:23,617 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:23,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-12-14 13:28:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:23,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 13:28:23,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:28:24,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 13:28:25,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:25,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330940228] [2022-12-14 13:28:25,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330940228] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:25,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1153340200] [2022-12-14 13:28:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:25,060 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:25,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:28:25,061 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:28:25,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-12-14 13:28:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:25,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 13:28:25,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:28:25,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 13:28:26,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1153340200] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:26,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711623743] [2022-12-14 13:28:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:26,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:28:26,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:28:26,667 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:28:26,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-14 13:28:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:26,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 13:28:26,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:28:26,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 13:28:32,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711623743] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:32,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:28:32,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 15, 16] total 27 [2022-12-14 13:28:32,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109223652] [2022-12-14 13:28:32,091 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:28:32,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 13:28:32,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 13:28:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2022-12-14 13:28:32,092 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-14 13:28:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:33,395 INFO L93 Difference]: Finished difference Result 127 states and 168 transitions. [2022-12-14 13:28:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 13:28:33,395 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 55 [2022-12-14 13:28:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:33,396 INFO L225 Difference]: With dead ends: 127 [2022-12-14 13:28:33,396 INFO L226 Difference]: Without dead ends: 94 [2022-12-14 13:28:33,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 294 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 13:28:33,398 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 132 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:33,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 482 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 13:28:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-12-14 13:28:33,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2022-12-14 13:28:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2022-12-14 13:28:33,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2022-12-14 13:28:33,404 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 55 [2022-12-14 13:28:33,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:33,404 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2022-12-14 13:28:33,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-14 13:28:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2022-12-14 13:28:33,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 13:28:33,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:33,405 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-12-14 13:28:33,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2022-12-14 13:28:33,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-14 13:28:33,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-12-14 13:28:34,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:34,008 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1696305608, now seen corresponding path program 1 times [2022-12-14 13:28:34,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:34,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759195157] [2022-12-14 13:28:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:34,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:34,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:34,013 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:34,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-12-14 13:28:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:34,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 13:28:34,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:28:34,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:34,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:34,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759195157] [2022-12-14 13:28:34,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759195157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:34,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:34,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 13:28:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763483547] [2022-12-14 13:28:34,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:34,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:28:34,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:28:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:28:34,215 INFO L87 Difference]: Start difference. First operand 80 states and 106 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 13:28:34,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:34,755 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2022-12-14 13:28:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:28:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-12-14 13:28:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:34,756 INFO L225 Difference]: With dead ends: 104 [2022-12-14 13:28:34,756 INFO L226 Difference]: Without dead ends: 80 [2022-12-14 13:28:34,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:28:34,756 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 41 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:34,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 292 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 13:28:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-14 13:28:34,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-12-14 13:28:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (21), 20 states have call predecessors, (21), 17 states have call successors, (21) [2022-12-14 13:28:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2022-12-14 13:28:34,761 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 60 [2022-12-14 13:28:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:34,761 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2022-12-14 13:28:34,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 13:28:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2022-12-14 13:28:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 13:28:34,762 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:34,762 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-12-14 13:28:34,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-12-14 13:28:34,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:34,963 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:34,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1055709639, now seen corresponding path program 1 times [2022-12-14 13:28:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:34,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371819418] [2022-12-14 13:28:34,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:34,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:34,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:34,965 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:34,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-12-14 13:28:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:35,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 13:28:35,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:28:35,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:35,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:35,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371819418] [2022-12-14 13:28:35,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371819418] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:35,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:35,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 13:28:35,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780952648] [2022-12-14 13:28:35,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:35,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:28:35,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:35,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:28:35,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:28:35,276 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 13:28:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:35,758 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-12-14 13:28:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:28:35,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2022-12-14 13:28:35,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:35,759 INFO L225 Difference]: With dead ends: 106 [2022-12-14 13:28:35,759 INFO L226 Difference]: Without dead ends: 82 [2022-12-14 13:28:35,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:28:35,759 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 38 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:35,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 298 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 13:28:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-14 13:28:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-12-14 13:28:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 17 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2022-12-14 13:28:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2022-12-14 13:28:35,766 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 61 [2022-12-14 13:28:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:35,766 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2022-12-14 13:28:35,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 13:28:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2022-12-14 13:28:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 13:28:35,767 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:35,767 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-12-14 13:28:35,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-12-14 13:28:35,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:35,968 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:35,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:35,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1911580054, now seen corresponding path program 1 times [2022-12-14 13:28:35,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:35,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131726467] [2022-12-14 13:28:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:35,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:35,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:35,973 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:35,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-12-14 13:28:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:36,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:28:36,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 13:28:36,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 13:28:36,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:36,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131726467] [2022-12-14 13:28:36,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131726467] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:36,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1772732284] [2022-12-14 13:28:36,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:36,482 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:36,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:28:36,483 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:28:36,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-12-14 13:28:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:36,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 13:28:36,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-14 13:28:36,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 13:28:37,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1772732284] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:37,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786374740] [2022-12-14 13:28:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:37,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:28:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:28:37,171 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:28:37,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-14 13:28:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:37,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 13:28:37,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:28:37,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:37,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786374740] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:28:37,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 13:28:37,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 10] total 24 [2022-12-14 13:28:37,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217508804] [2022-12-14 13:28:37,755 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 13:28:37,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 13:28:37,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 13:28:37,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-12-14 13:28:37,756 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) [2022-12-14 13:28:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:38,858 INFO L93 Difference]: Finished difference Result 111 states and 136 transitions. [2022-12-14 13:28:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 13:28:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) Word has length 62 [2022-12-14 13:28:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:38,859 INFO L225 Difference]: With dead ends: 111 [2022-12-14 13:28:38,859 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 13:28:38,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 13:28:38,859 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 81 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:38,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 413 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 13:28:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 13:28:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-12-14 13:28:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-14 13:28:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-12-14 13:28:38,862 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2022-12-14 13:28:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:38,863 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-12-14 13:28:38,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) [2022-12-14 13:28:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-12-14 13:28:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 13:28:38,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:38,863 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:28:38,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-12-14 13:28:39,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2022-12-14 13:28:39,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-12-14 13:28:39,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:28:39,466 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash -187739156, now seen corresponding path program 1 times [2022-12-14 13:28:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:39,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119390278] [2022-12-14 13:28:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:39,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:39,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:39,469 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:39,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-12-14 13:28:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:39,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 13:28:39,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:28:39,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:39,783 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:39,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119390278] [2022-12-14 13:28:39,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119390278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:39,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:39,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 13:28:39,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280516712] [2022-12-14 13:28:39,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:39,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:28:39,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:39,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:28:39,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:28:39,784 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 13:28:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:40,307 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-12-14 13:28:40,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:28:40,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-12-14 13:28:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:40,308 INFO L225 Difference]: With dead ends: 67 [2022-12-14 13:28:40,308 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 13:28:40,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:28:40,309 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 32 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:40,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 241 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:28:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 13:28:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-12-14 13:28:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-14 13:28:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-12-14 13:28:40,312 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2022-12-14 13:28:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:40,313 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-12-14 13:28:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 13:28:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-12-14 13:28:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 13:28:40,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:40,313 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:28:40,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-12-14 13:28:40,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:40,514 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:40,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1230639261, now seen corresponding path program 1 times [2022-12-14 13:28:40,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:40,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478978793] [2022-12-14 13:28:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:40,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:40,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:40,520 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:40,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-12-14 13:28:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:40,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 13:28:40,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:28:40,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:40,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:40,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478978793] [2022-12-14 13:28:40,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478978793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:40,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:40,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 13:28:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279274251] [2022-12-14 13:28:40,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:40,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:28:40,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:28:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:28:40,749 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 13:28:41,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:41,176 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-12-14 13:28:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:28:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2022-12-14 13:28:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:41,177 INFO L225 Difference]: With dead ends: 64 [2022-12-14 13:28:41,177 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 13:28:41,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:28:41,178 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 31 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:41,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 241 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:28:41,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 13:28:41,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-12-14 13:28:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 13:28:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-12-14 13:28:41,182 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 63 [2022-12-14 13:28:41,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:41,182 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-12-14 13:28:41,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 13:28:41,182 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-12-14 13:28:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 13:28:41,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:41,183 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:28:41,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-12-14 13:28:41,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:41,384 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1065424800, now seen corresponding path program 1 times [2022-12-14 13:28:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:41,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433926132] [2022-12-14 13:28:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:41,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:41,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:41,389 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:41,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-12-14 13:28:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:41,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 13:28:41,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 13:28:41,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 13:28:41,933 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:41,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433926132] [2022-12-14 13:28:41,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433926132] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:41,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1444832574] [2022-12-14 13:28:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:41,933 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:41,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:28:41,934 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:28:41,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-12-14 13:28:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:42,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 13:28:42,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-14 13:28:42,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-14 13:28:42,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1444832574] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:42,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739566266] [2022-12-14 13:28:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:42,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:28:42,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:28:42,968 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:28:42,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-14 13:28:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:43,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 13:28:43,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 13:28:43,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:28:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 13:28:45,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739566266] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:28:45,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:28:45,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 12, 9] total 28 [2022-12-14 13:28:45,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603827680] [2022-12-14 13:28:45,240 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:28:45,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-14 13:28:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-14 13:28:45,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2022-12-14 13:28:45,241 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2022-12-14 13:28:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:46,726 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-12-14 13:28:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 13:28:46,727 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) Word has length 63 [2022-12-14 13:28:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:46,727 INFO L225 Difference]: With dead ends: 88 [2022-12-14 13:28:46,727 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 13:28:46,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 13:28:46,728 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 163 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:46,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 395 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 13:28:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 13:28:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2022-12-14 13:28:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 13:28:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2022-12-14 13:28:46,731 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 63 [2022-12-14 13:28:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:46,731 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2022-12-14 13:28:46,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2022-12-14 13:28:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2022-12-14 13:28:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 13:28:46,731 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:28:46,731 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:28:46,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-12-14 13:28:46,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-12-14 13:28:47,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2022-12-14 13:28:47,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 13:28:47,334 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:28:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:28:47,335 INFO L85 PathProgramCache]: Analyzing trace with hash -846570082, now seen corresponding path program 1 times [2022-12-14 13:28:47,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:28:47,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755725939] [2022-12-14 13:28:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:28:47,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:47,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:28:47,337 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:28:47,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-12-14 13:28:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:28:47,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:28:47,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:28:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 13:28:47,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:28:47,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:28:47,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755725939] [2022-12-14 13:28:47,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755725939] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:28:47,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:28:47,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:28:47,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322011475] [2022-12-14 13:28:47,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:28:47,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:28:47,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:28:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:28:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:47,433 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 13:28:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:28:47,446 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-12-14 13:28:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:28:47,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-12-14 13:28:47,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:28:47,447 INFO L225 Difference]: With dead ends: 48 [2022-12-14 13:28:47,447 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 13:28:47,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:28:47,447 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:28:47,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:28:47,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 13:28:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 13:28:47,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:28:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 13:28:47,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-12-14 13:28:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:28:47,448 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 13:28:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 13:28:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 13:28:47,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 13:28:47,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 13:28:47,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 13:28:47,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-12-14 13:28:47,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:28:47,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 13:28:48,870 INFO L899 garLoopResultBuilder]: For program point isnan_floatFINAL(line 57) no Hoare annotation was computed. [2022-12-14 13:28:48,871 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 57) the Hoare annotation is: true [2022-12-14 13:28:48,871 INFO L899 garLoopResultBuilder]: For program point isnan_floatEXIT(line 57) no Hoare annotation was computed. [2022-12-14 13:28:48,871 INFO L895 garLoopResultBuilder]: At program point fmax_float_returnLabel#1(lines 45 54) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (fp.eq |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0)) (and (= |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))))) [2022-12-14 13:28:48,871 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2022-12-14 13:28:48,871 INFO L895 garLoopResultBuilder]: At program point L81(line 81) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (= |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) (and (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0)))) [2022-12-14 13:28:48,871 INFO L899 garLoopResultBuilder]: For program point L81-1(line 81) no Hoare annotation was computed. [2022-12-14 13:28:48,871 INFO L899 garLoopResultBuilder]: For program point L81-2(line 81) no Hoare annotation was computed. [2022-12-14 13:28:48,872 INFO L895 garLoopResultBuilder]: At program point L81-3(line 81) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (= |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) (and (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0)))) [2022-12-14 13:28:48,872 INFO L899 garLoopResultBuilder]: For program point L81-4(line 81) no Hoare annotation was computed. [2022-12-14 13:28:48,872 INFO L899 garLoopResultBuilder]: For program point L81-6(lines 81 84) no Hoare annotation was computed. [2022-12-14 13:28:48,872 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 59 88) the Hoare annotation is: true [2022-12-14 13:28:48,872 INFO L902 garLoopResultBuilder]: At program point L69(line 69) the Hoare annotation is: true [2022-12-14 13:28:48,872 INFO L899 garLoopResultBuilder]: For program point L69-1(line 69) no Hoare annotation was computed. [2022-12-14 13:28:48,872 INFO L899 garLoopResultBuilder]: For program point L69-2(line 69) no Hoare annotation was computed. [2022-12-14 13:28:48,872 INFO L895 garLoopResultBuilder]: At program point L69-3(line 69) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short11#1| (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (= (_ bv1 32) |ULTIMATE.start_main_#t~ret9#1|)) [2022-12-14 13:28:48,872 INFO L899 garLoopResultBuilder]: For program point L69-4(line 69) no Hoare annotation was computed. [2022-12-14 13:28:48,872 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 13:28:48,872 INFO L899 garLoopResultBuilder]: For program point L69-6(line 69) no Hoare annotation was computed. [2022-12-14 13:28:48,873 INFO L899 garLoopResultBuilder]: For program point L69-7(lines 69 70) no Hoare annotation was computed. [2022-12-14 13:28:48,873 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 13:28:48,873 INFO L899 garLoopResultBuilder]: For program point L69-9(lines 69 85) no Hoare annotation was computed. [2022-12-14 13:28:48,873 INFO L899 garLoopResultBuilder]: For program point L69-11(lines 69 85) no Hoare annotation was computed. [2022-12-14 13:28:48,873 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2022-12-14 13:28:48,873 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2022-12-14 13:28:48,873 INFO L895 garLoopResultBuilder]: At program point L70(line 70) the Hoare annotation is: (let ((.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (not |ULTIMATE.start_main_#t~short11#1|)) (.cse2 (not |ULTIMATE.start_main_#t~short15#1|))) (or (and (= |ULTIMATE.start_main_#t~ret10#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (not .cse1) (= (_ bv1 32) |ULTIMATE.start_main_#t~ret9#1|) .cse2) (and (= (_ bv0 32) |ULTIMATE.start_main_#t~ret9#1|) .cse1 .cse0 .cse2))) [2022-12-14 13:28:48,873 INFO L899 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2022-12-14 13:28:48,873 INFO L899 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2022-12-14 13:28:48,873 INFO L895 garLoopResultBuilder]: At program point L70-3(line 70) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short14#1| (= (_ bv0 32) |ULTIMATE.start_main_#t~ret9#1|) (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|) (not |ULTIMATE.start_main_#t~short11#1|) (not |ULTIMATE.start_main_#t~short15#1|) (= |ULTIMATE.start_main_#t~ret12#1| (_ bv0 32))) [2022-12-14 13:28:48,873 INFO L899 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2022-12-14 13:28:48,874 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 13:28:48,874 INFO L899 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2022-12-14 13:28:48,874 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) (or (and (= |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_fmax_float_~x#1|)) (not .cse0) .cse1) (and (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not .cse1)))) [2022-12-14 13:28:48,874 INFO L899 garLoopResultBuilder]: For program point L50-1(lines 50 52) no Hoare annotation was computed. [2022-12-14 13:28:48,874 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) (or (and (= |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_fmax_float_~x#1|)) (not .cse0) .cse1) (and (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not .cse1)))) [2022-12-14 13:28:48,874 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 48) no Hoare annotation was computed. [2022-12-14 13:28:48,874 INFO L895 garLoopResultBuilder]: At program point L75(line 75) the Hoare annotation is: (let ((.cse4 (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse5 (not .cse4))) (let ((.cse0 (or (fp.eq |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~y~0#1|) .cse5)) (.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (or (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) .cse5)) (.cse3 (or (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) .cse5))) (or (and (= |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|)) .cse2 .cse3) (and .cse0 (not .cse1) .cse2 .cse3 .cse4))))) [2022-12-14 13:28:48,874 INFO L899 garLoopResultBuilder]: For program point L75-1(line 75) no Hoare annotation was computed. [2022-12-14 13:28:48,874 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 13:28:48,874 INFO L899 garLoopResultBuilder]: For program point L75-2(line 75) no Hoare annotation was computed. [2022-12-14 13:28:48,875 INFO L895 garLoopResultBuilder]: At program point L75-3(line 75) the Hoare annotation is: (and (fp.eq |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_#t~short19#1| (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~ret17#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) [2022-12-14 13:28:48,875 INFO L899 garLoopResultBuilder]: For program point L75-4(line 75) no Hoare annotation was computed. [2022-12-14 13:28:48,875 INFO L899 garLoopResultBuilder]: For program point L75-6(lines 75 78) no Hoare annotation was computed. [2022-12-14 13:28:48,875 INFO L899 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2022-12-14 13:28:48,875 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 42) no Hoare annotation was computed. [2022-12-14 13:28:48,875 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 22 43) no Hoare annotation was computed. [2022-12-14 13:28:48,875 INFO L899 garLoopResultBuilder]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2022-12-14 13:28:48,875 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 29) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2022-12-14 13:28:48,875 INFO L899 garLoopResultBuilder]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2022-12-14 13:28:48,875 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 43) the Hoare annotation is: true [2022-12-14 13:28:48,876 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 42) no Hoare annotation was computed. [2022-12-14 13:28:48,876 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 22 43) no Hoare annotation was computed. [2022-12-14 13:28:48,876 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2022-12-14 13:28:48,879 INFO L445 BasicCegarLoop]: Path program 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] [2022-12-14 13:28:48,881 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:28:48,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:28:48 BoogieIcfgContainer [2022-12-14 13:28:48,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:28:48,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:28:48,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:28:48,893 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:28:48,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:27:51" (3/4) ... [2022-12-14 13:28:48,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 13:28:48,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2022-12-14 13:28:48,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-12-14 13:28:48,906 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-14 13:28:48,906 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 13:28:48,906 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 13:28:48,906 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 13:28:48,928 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-12-14 13:28:48,928 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.eq~FLOAT(\result, y) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || ((((\result == x && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && !~fp.eq~FLOAT(y, y)) [2022-12-14 13:28:48,936 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:28:48,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:28:48,937 INFO L158 Benchmark]: Toolchain (without parser) took 58058.24ms. Allocated memory is still 77.6MB. Free memory was 56.5MB in the beginning and 21.8MB in the end (delta: 34.7MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2022-12-14 13:28:48,937 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:28:48,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.62ms. Allocated memory is still 77.6MB. Free memory was 56.3MB in the beginning and 44.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 13:28:48,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.60ms. Allocated memory is still 77.6MB. Free memory was 44.6MB in the beginning and 42.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:28:48,937 INFO L158 Benchmark]: Boogie Preprocessor took 33.06ms. Allocated memory is still 77.6MB. Free memory was 42.9MB in the beginning and 41.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:28:48,937 INFO L158 Benchmark]: RCFGBuilder took 341.34ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 46.2MB in the end (delta: -4.9MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-12-14 13:28:48,938 INFO L158 Benchmark]: TraceAbstraction took 57365.34ms. Allocated memory is still 77.6MB. Free memory was 45.5MB in the beginning and 25.3MB in the end (delta: 20.2MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2022-12-14 13:28:48,938 INFO L158 Benchmark]: Witness Printer took 43.77ms. Allocated memory is still 77.6MB. Free memory was 25.3MB in the beginning and 21.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 13:28:48,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.62ms. Allocated memory is still 77.6MB. Free memory was 56.3MB in the beginning and 44.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.60ms. Allocated memory is still 77.6MB. Free memory was 44.6MB in the beginning and 42.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.06ms. Allocated memory is still 77.6MB. Free memory was 42.9MB in the beginning and 41.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 341.34ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 46.2MB in the end (delta: -4.9MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * TraceAbstraction took 57365.34ms. Allocated memory is still 77.6MB. Free memory was 45.5MB in the beginning and 25.3MB in the end (delta: 20.2MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. * Witness Printer took 43.77ms. Allocated memory is still 77.6MB. Free memory was 25.3MB in the beginning and 21.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 3 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 57.3s, OverallIterations: 26, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1314 SdHoareTripleChecker+Valid, 9.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1265 mSDsluCounter, 8173 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6701 mSDsCounter, 441 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6040 IncrementalHoareTripleChecker+Invalid, 6481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 441 mSolverCounterUnsat, 1472 mSDtfsCounter, 6040 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3251 GetRequests, 2872 SyntacticMatches, 8 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=13, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 190 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 152 PreInvPairs, 178 NumberOfFragments, 306 HoareAnnotationTreeSize, 152 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 15 FomulaSimplificationsInter, 14308 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 27.8s InterpolantComputationTime, 2055 NumberOfCodeBlocks, 2055 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3067 ConstructedInterpolants, 13 QuantifiedInterpolants, 10235 SizeOfPredicates, 260 NumberOfNonLiveVariables, 4739 ConjunctsInSsa, 509 ConjunctsInUnsatCore, 63 InterpolantComputations, 20 PerfectInterpolantSequences, 1711/1986 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: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((~fp.eq~FLOAT(\result, y) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || ((((\result == x && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && !~fp.eq~FLOAT(y, y)) RESULT: Ultimate proved your program to be correct! [2022-12-14 13:28:48,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eacf3cd4-c85e-411d-88cc-08a02f3530d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE