./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:21:03,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:21:03,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:21:03,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:21:03,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:21:03,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:21:03,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:21:03,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:21:03,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:21:03,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:21:03,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:21:03,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:21:03,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:21:03,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:21:03,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:21:03,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:21:03,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:21:03,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:21:03,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:21:03,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:21:03,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:21:03,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:21:03,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:21:03,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:21:03,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:21:03,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:21:03,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:21:03,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:21:03,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:21:03,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:21:03,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:21:03,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:21:03,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:21:03,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:21:03,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:21:03,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:21:03,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:21:03,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:21:03,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:21:03,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:21:03,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:21:03,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:21:03,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:21:03,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:21:03,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:21:03,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:21:03,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:21:03,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:21:03,581 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:21:03,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:21:03,582 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:21:03,582 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:21:03,583 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:21:03,583 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:21:03,583 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:21:03,584 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:21:03,584 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:21:03,584 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:21:03,584 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:21:03,585 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:21:03,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:21:03,585 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:21:03,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:21:03,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:21:03,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:21:03,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:21:03,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:21:03,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:21:03,587 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:21:03,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:21:03,587 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:21:03,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:21:03,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:21:03,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:21:03,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:03,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:21:03,589 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:21:03,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:21:03,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:21:03,590 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:21:03,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:21:03,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:21:03,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:21:03,590 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_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 [2022-11-03 02:21:03,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:21:03,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:21:03,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:21:03,895 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:21:03,896 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:21:03,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2022-11-03 02:21:03,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data/2eab4480a/f64d4d3b792340508d50af431c7c33ec/FLAGee35fd4f8 [2022-11-03 02:21:04,419 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:21:04,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2022-11-03 02:21:04,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data/2eab4480a/f64d4d3b792340508d50af431c7c33ec/FLAGee35fd4f8 [2022-11-03 02:21:04,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data/2eab4480a/f64d4d3b792340508d50af431c7c33ec [2022-11-03 02:21:04,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:21:04,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:21:04,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:04,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:21:04,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:21:04,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:04" (1/1) ... [2022-11-03 02:21:04,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d0cda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:04, skipping insertion in model container [2022-11-03 02:21:04,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:04" (1/1) ... [2022-11-03 02:21:04,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:21:04,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:21:05,078 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2022-11-03 02:21:05,099 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2022-11-03 02:21:05,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:05,125 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:21:05,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2022-11-03 02:21:05,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2022-11-03 02:21:05,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:05,184 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:21:05,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05 WrapperNode [2022-11-03 02:21:05,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:05,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:05,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:21:05,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:21:05,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,221 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 150 [2022-11-03 02:21:05,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:05,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:21:05,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:21:05,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:21:05,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:21:05,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:21:05,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:21:05,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:21:05,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (1/1) ... [2022-11-03 02:21:05,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:05,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:05,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:21:05,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:21:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:21:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:21:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:21:05,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:21:05,436 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:21:05,438 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:21:05,706 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:21:05,757 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:21:05,757 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:21:05,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:05 BoogieIcfgContainer [2022-11-03 02:21:05,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:21:05,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:21:05,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:21:05,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:21:05,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:21:04" (1/3) ... [2022-11-03 02:21:05,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ad71d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:05, skipping insertion in model container [2022-11-03 02:21:05,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:05" (2/3) ... [2022-11-03 02:21:05,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ad71d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:05, skipping insertion in model container [2022-11-03 02:21:05,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:05" (3/3) ... [2022-11-03 02:21:05,769 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+lhb-reducer.c [2022-11-03 02:21:05,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:21:05,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:21:05,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:21:05,857 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;@6eb82dcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:21:05,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:21:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:21:05,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:05,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:05,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:05,897 INFO L85 PathProgramCache]: Analyzing trace with hash 610657513, now seen corresponding path program 1 times [2022-11-03 02:21:05,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:05,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270847849] [2022-11-03 02:21:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:05,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:21:06,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:21:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:21:06,122 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:21:06,124 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:21:06,126 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-03 02:21:06,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-03 02:21:06,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:21:06,134 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:21:06,139 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:21:06,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:21:06 BoogieIcfgContainer [2022-11-03 02:21:06,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:21:06,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:21:06,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:21:06,172 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:21:06,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:05" (3/4) ... [2022-11-03 02:21:06,175 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:21:06,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:21:06,176 INFO L158 Benchmark]: Toolchain (without parser) took 1370.00ms. Allocated memory is still 125.8MB. Free memory was 87.7MB in the beginning and 63.1MB in the end (delta: 24.6MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-03 02:21:06,177 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:21:06,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.62ms. Allocated memory is still 125.8MB. Free memory was 87.4MB in the beginning and 97.1MB in the end (delta: -9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:21:06,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.26ms. Allocated memory is still 125.8MB. Free memory was 97.1MB in the beginning and 95.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:21:06,179 INFO L158 Benchmark]: Boogie Preprocessor took 54.19ms. Allocated memory is still 125.8MB. Free memory was 95.5MB in the beginning and 94.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:21:06,180 INFO L158 Benchmark]: RCFGBuilder took 483.51ms. Allocated memory is still 125.8MB. Free memory was 93.9MB in the beginning and 78.7MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 02:21:06,180 INFO L158 Benchmark]: TraceAbstraction took 408.59ms. Allocated memory is still 125.8MB. Free memory was 78.3MB in the beginning and 63.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 02:21:06,181 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 125.8MB. Free memory was 63.6MB in the beginning and 63.1MB in the end (delta: 454.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:21:06,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.62ms. Allocated memory is still 125.8MB. Free memory was 87.4MB in the beginning and 97.1MB in the end (delta: -9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.26ms. Allocated memory is still 125.8MB. Free memory was 97.1MB in the beginning and 95.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.19ms. Allocated memory is still 125.8MB. Free memory was 95.5MB in the beginning and 94.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 483.51ms. Allocated memory is still 125.8MB. Free memory was 93.9MB in the beginning and 78.7MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 408.59ms. Allocated memory is still 125.8MB. Free memory was 78.3MB in the beginning and 63.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 125.8MB. Free memory was 63.6MB in the beginning and 63.1MB in the end (delta: 454.0kB). 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: 67]: 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 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of to_real at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 48. Possible FailurePath: [L1] int __return_main; [L12] int __tmp_160_0; [L13] int __tmp_160_1; [L14] int __tmp_160_2; [L15] int __return_165; [L18] float main__X; [L19] float main__Y; [L20] float main__S; [L21] float main__R; [L22] float main__D; [L23] int main__i; [L24] main__Y = 0 [L25] main__i = 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__i=0] [L26] COND TRUE main__i < 100000 [L28] main__X = __VERIFIER_nondet_float() [L29] main__D = __VERIFIER_nondet_float() [L30] int main____CPAchecker_TMP_0; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=53, main__i=0, main__X=54] [L31] COND TRUE main__X >= -128.0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=53, main__i=0, main__X=54] [L33] COND TRUE main__X <= 128.0 [L35] main____CPAchecker_TMP_0 = 1 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=53, main__i=0, main__X=54] [L36] COND TRUE main____CPAchecker_TMP_0 != 0 [L38] int main____CPAchecker_TMP_1; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=53, main__i=0, main__X=54] [L39] COND TRUE main__D >= 0.0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=53, main__i=0, main__X=54] [L41] COND TRUE main__D <= 16.0 [L43] main____CPAchecker_TMP_1 = 1 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=53, main__i=0, main__X=54] [L44] COND TRUE main____CPAchecker_TMP_1 != 0 [L46] main__S = main__Y [L47] main__Y = main__X [L48] main__R = main__X - main__S [L49] COND TRUE main__R <= (-main__D) [L51] main__Y = main__S - main__D [L53] int main____CPAchecker_TMP_2; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L54] COND FALSE !(main__Y >= -129.0) VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L205] main____CPAchecker_TMP_2 = 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L61] int __tmp_1; [L62] __tmp_1 = main____CPAchecker_TMP_2 [L63] int __VERIFIER_assert__cond; [L64] __VERIFIER_assert__cond = __tmp_1 VAL [__return_165=0, __return_main=0, __tmp_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L65] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_165=0, __return_main=0, __tmp_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L67] reach_error() VAL [__return_165=0, __return_main=0, __tmp_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] - UnprovableResult [Line: 123]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:21:06,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:21:08,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:21:08,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:21:08,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:21:08,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:21:08,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:21:08,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:21:08,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:21:08,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:21:08,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:21:08,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:21:08,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:21:08,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:21:08,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:21:08,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:21:08,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:21:08,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:21:08,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:21:08,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:21:08,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:21:08,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:21:08,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:21:08,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:21:08,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:21:08,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:21:08,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:21:08,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:21:08,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:21:08,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:21:08,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:21:08,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:21:08,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:21:08,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:21:08,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:21:08,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:21:08,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:21:08,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:21:08,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:21:08,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:21:08,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:21:08,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:21:08,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:21:08,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:21:08,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:21:08,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:21:08,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:21:08,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:21:08,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:21:08,569 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:21:08,569 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:21:08,569 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:21:08,569 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:21:08,570 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:21:08,571 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:21:08,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:21:08,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:21:08,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:21:08,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:21:08,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:21:08,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:21:08,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:21:08,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:21:08,574 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:21:08,574 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:21:08,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:21:08,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:21:08,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:21:08,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:21:08,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:21:08,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:21:08,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:21:08,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:08,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:21:08,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:21:08,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:21:08,577 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:21:08,577 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:08,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:21:08,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:21:08,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:21:08,578 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_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 [2022-11-03 02:21:08,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:21:08,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:21:08,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:21:08,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:21:08,984 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:21:08,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2022-11-03 02:21:09,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data/26e8e633b/c73000466f7c4ae69bdc645eecbf2df0/FLAG67fab6b1d [2022-11-03 02:21:09,653 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:21:09,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2022-11-03 02:21:09,669 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data/26e8e633b/c73000466f7c4ae69bdc645eecbf2df0/FLAG67fab6b1d [2022-11-03 02:21:10,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/data/26e8e633b/c73000466f7c4ae69bdc645eecbf2df0 [2022-11-03 02:21:10,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:21:10,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:21:10,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:10,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:21:10,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:21:10,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@802e8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10, skipping insertion in model container [2022-11-03 02:21:10,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:21:10,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:21:10,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2022-11-03 02:21:10,245 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2022-11-03 02:21:10,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:10,280 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:21:10,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2022-11-03 02:21:10,313 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2022-11-03 02:21:10,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:10,338 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:21:10,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10 WrapperNode [2022-11-03 02:21:10,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:10,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:10,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:21:10,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:21:10,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,377 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 151 [2022-11-03 02:21:10,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:10,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:21:10,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:21:10,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:21:10,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,403 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:21:10,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:21:10,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:21:10,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:21:10,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (1/1) ... [2022-11-03 02:21:10,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:10,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:10,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:21:10,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:21:10,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:21:10,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:21:10,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:21:10,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:21:10,603 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:21:10,605 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:21:12,758 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:21:12,764 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:21:12,764 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:21:12,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:12 BoogieIcfgContainer [2022-11-03 02:21:12,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:21:12,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:21:12,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:21:12,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:21:12,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:21:10" (1/3) ... [2022-11-03 02:21:12,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570db120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:12, skipping insertion in model container [2022-11-03 02:21:12,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:10" (2/3) ... [2022-11-03 02:21:12,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570db120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:12, skipping insertion in model container [2022-11-03 02:21:12,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:12" (3/3) ... [2022-11-03 02:21:12,776 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+lhb-reducer.c [2022-11-03 02:21:12,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:21:12,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:21:12,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:21:12,868 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;@ce0e53e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:21:12,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:21:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:12,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:21:12,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:12,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:12,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:12,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash 346658074, now seen corresponding path program 1 times [2022-11-03 02:21:12,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:12,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631269183] [2022-11-03 02:21:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:12,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:12,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:12,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:12,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:21:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:13,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:21:13,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:18,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:18,846 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:18,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631269183] [2022-11-03 02:21:18,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631269183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:18,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:18,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342969915] [2022-11-03 02:21:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:18,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:18,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:18,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:18,882 INFO L87 Difference]: Start difference. First operand has 42 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:40,008 INFO L93 Difference]: Finished difference Result 114 states and 159 transitions. [2022-11-03 02:21:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:40,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 02:21:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:40,025 INFO L225 Difference]: With dead ends: 114 [2022-11-03 02:21:40,025 INFO L226 Difference]: Without dead ends: 68 [2022-11-03 02:21:40,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:21:40,031 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 90 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:40,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 253 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 23 Unchecked, 18.5s Time] [2022-11-03 02:21:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-03 02:21:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 41. [2022-11-03 02:21:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2022-11-03 02:21:40,067 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 16 [2022-11-03 02:21:40,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:40,068 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2022-11-03 02:21:40,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2022-11-03 02:21:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:21:40,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:40,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:40,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 02:21:40,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:40,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:40,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:40,277 INFO L85 PathProgramCache]: Analyzing trace with hash 257195701, now seen corresponding path program 1 times [2022-11-03 02:21:40,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:40,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80620743] [2022-11-03 02:21:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:40,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:40,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:40,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:40,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:21:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:40,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:21:40,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:40,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:40,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:40,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80620743] [2022-11-03 02:21:40,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80620743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:40,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:40,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:21:40,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356959104] [2022-11-03 02:21:40,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:21:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:21:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:21:40,452 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:40,513 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2022-11-03 02:21:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:40,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 02:21:40,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:40,517 INFO L225 Difference]: With dead ends: 66 [2022-11-03 02:21:40,517 INFO L226 Difference]: Without dead ends: 64 [2022-11-03 02:21:40,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:40,519 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 32 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 140 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 [2022-11-03 02:21:40,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 140 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-03 02:21:40,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2022-11-03 02:21:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2022-11-03 02:21:40,526 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 16 [2022-11-03 02:21:40,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:40,526 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2022-11-03 02:21:40,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2022-11-03 02:21:40,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:21:40,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:40,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:40,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-03 02:21:40,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:40,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:40,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:40,744 INFO L85 PathProgramCache]: Analyzing trace with hash -533932591, now seen corresponding path program 1 times [2022-11-03 02:21:40,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:40,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647006545] [2022-11-03 02:21:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:40,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:40,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:40,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:40,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:21:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:40,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:21:40,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:49,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:49,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:49,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647006545] [2022-11-03 02:21:49,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647006545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:49,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:49,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:49,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743968172] [2022-11-03 02:21:49,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:49,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:49,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:49,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:49,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:49,995 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:58,821 INFO L93 Difference]: Finished difference Result 96 states and 125 transitions. [2022-11-03 02:21:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:21:58,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 02:21:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:58,831 INFO L225 Difference]: With dead ends: 96 [2022-11-03 02:21:58,831 INFO L226 Difference]: Without dead ends: 71 [2022-11-03 02:21:58,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:21:58,832 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:58,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 136 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 24 Unchecked, 6.4s Time] [2022-11-03 02:21:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-03 02:21:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 44. [2022-11-03 02:21:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2022-11-03 02:21:58,840 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 17 [2022-11-03 02:21:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:58,840 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2022-11-03 02:21:58,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:58,841 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2022-11-03 02:21:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:21:58,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:58,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:58,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:59,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:59,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash -354879015, now seen corresponding path program 1 times [2022-11-03 02:21:59,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:59,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178466797] [2022-11-03 02:21:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:59,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:59,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:59,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:59,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:21:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:59,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:21:59,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:03,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:22:03,845 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:22:03,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178466797] [2022-11-03 02:22:03,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178466797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:03,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:03,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:22:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261801708] [2022-11-03 02:22:03,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:03,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:22:03,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:22:03,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:22:03,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:22:03,847 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:07,552 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2022-11-03 02:22:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:22:07,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 02:22:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:07,557 INFO L225 Difference]: With dead ends: 71 [2022-11-03 02:22:07,557 INFO L226 Difference]: Without dead ends: 46 [2022-11-03 02:22:07,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:22:07,559 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:07,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 83 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 26 Unchecked, 1.6s Time] [2022-11-03 02:22:07,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-03 02:22:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-03 02:22:07,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-03 02:22:07,565 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 17 [2022-11-03 02:22:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:07,566 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-03 02:22:07,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-03 02:22:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:22:07,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:07,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:07,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:07,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:22:07,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:07,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1420128347, now seen corresponding path program 1 times [2022-11-03 02:22:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:22:07,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470271988] [2022-11-03 02:22:07,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:07,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:22:07,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:22:07,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:22:07,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:22:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:07,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:22:07,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:11,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:22:11,628 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:22:11,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470271988] [2022-11-03 02:22:11,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470271988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:11,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:11,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:22:11,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784569271] [2022-11-03 02:22:11,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:11,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:22:11,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:22:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:22:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:22:11,630 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:43,893 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2022-11-03 02:22:43,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:22:43,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 02:22:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:43,903 INFO L225 Difference]: With dead ends: 137 [2022-11-03 02:22:43,903 INFO L226 Difference]: Without dead ends: 112 [2022-11-03 02:22:43,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:22:43,905 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 97 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:43,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 109 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time] [2022-11-03 02:22:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-03 02:22:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 54. [2022-11-03 02:22:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-11-03 02:22:43,915 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 17 [2022-11-03 02:22:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:43,915 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-11-03 02:22:43,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-11-03 02:22:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:22:43,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:43,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:43,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:44,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:22:44,118 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -806745870, now seen corresponding path program 1 times [2022-11-03 02:22:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:22:44,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893156757] [2022-11-03 02:22:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:44,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:22:44,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:22:44,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:22:44,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:22:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:44,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:22:44,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:53,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:22:53,023 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:22:53,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893156757] [2022-11-03 02:22:53,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893156757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:53,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:53,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:22:53,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231273463] [2022-11-03 02:22:53,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:53,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:22:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:22:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:22:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:22:53,024 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:03,495 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2022-11-03 02:23:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:23:03,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 02:23:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:03,501 INFO L225 Difference]: With dead ends: 86 [2022-11-03 02:23:03,501 INFO L226 Difference]: Without dead ends: 51 [2022-11-03 02:23:03,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:23:03,502 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 62 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:03,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 80 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 25 Unchecked, 7.8s Time] [2022-11-03 02:23:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-03 02:23:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-11-03 02:23:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-11-03 02:23:03,510 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 18 [2022-11-03 02:23:03,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:03,511 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-03 02:23:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-11-03 02:23:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:23:03,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:03,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:03,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-03 02:23:03,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:23:03,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:03,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:03,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1099426199, now seen corresponding path program 1 times [2022-11-03 02:23:03,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:23:03,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682705590] [2022-11-03 02:23:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:03,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:23:03,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:23:03,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:23:03,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:23:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:03,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:23:03,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:23:03,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:23:03,910 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:23:03,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682705590] [2022-11-03 02:23:03,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682705590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:03,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:03,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:23:03,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482184162] [2022-11-03 02:23:03,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:03,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:23:03,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:23:03,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:23:03,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:23:03,912 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:03,962 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2022-11-03 02:23:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:23:03,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-03 02:23:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:03,964 INFO L225 Difference]: With dead ends: 78 [2022-11-03 02:23:03,964 INFO L226 Difference]: Without dead ends: 76 [2022-11-03 02:23:03,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:03,965 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 45 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:03,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 153 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:23:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-03 02:23:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 48. [2022-11-03 02:23:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 47 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2022-11-03 02:23:03,974 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 30 [2022-11-03 02:23:03,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:03,974 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2022-11-03 02:23:03,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2022-11-03 02:23:03,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:23:03,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:03,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:03,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:04,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:23:04,183 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:04,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1082415538, now seen corresponding path program 1 times [2022-11-03 02:23:04,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:23:04,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523661521] [2022-11-03 02:23:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:04,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:23:04,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:23:04,185 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:23:04,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:23:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:04,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:23:04,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:20,193 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_13| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_21| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_21|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_21|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_13| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_21|)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from false [2022-11-03 02:24:22,207 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_13| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_21| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_21|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_21|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_13| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_21|)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from true [2022-11-03 02:25:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:43,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:43,678 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523661521] [2022-11-03 02:25:43,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523661521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:43,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:43,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 02:25:43,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860039334] [2022-11-03 02:25:43,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:43,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:25:43,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:43,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:25:43,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=83, Unknown=2, NotChecked=20, Total=156 [2022-11-03 02:25:43,680 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:47,794 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-11-03 02:25:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:25:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-03 02:25:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:47,800 INFO L225 Difference]: With dead ends: 69 [2022-11-03 02:25:47,800 INFO L226 Difference]: Without dead ends: 67 [2022-11-03 02:25:47,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=60, Invalid=98, Unknown=2, NotChecked=22, Total=182 [2022-11-03 02:25:47,801 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:47,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 75 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 104 Unchecked, 1.4s Time] [2022-11-03 02:25:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-03 02:25:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2022-11-03 02:25:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.328125) internal successors, (85), 64 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2022-11-03 02:25:47,813 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 30 [2022-11-03 02:25:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:47,814 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2022-11-03 02:25:47,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2022-11-03 02:25:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:25:47,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:47,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:47,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:48,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:48,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1958707529, now seen corresponding path program 1 times [2022-11-03 02:25:48,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:48,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143864448] [2022-11-03 02:25:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:48,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:48,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:48,041 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:48,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:25:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:48,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:25:48,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:48,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:48,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:48,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143864448] [2022-11-03 02:25:48,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143864448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:48,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:48,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462034305] [2022-11-03 02:25:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:48,218 INFO L87 Difference]: Start difference. First operand 65 states and 85 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:48,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:48,435 INFO L93 Difference]: Finished difference Result 99 states and 131 transitions. [2022-11-03 02:25:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:48,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-03 02:25:48,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:48,437 INFO L225 Difference]: With dead ends: 99 [2022-11-03 02:25:48,437 INFO L226 Difference]: Without dead ends: 63 [2022-11-03 02:25:48,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:48,438 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:48,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-03 02:25:48,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-03 02:25:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 62 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2022-11-03 02:25:48,455 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 30 [2022-11-03 02:25:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:48,455 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2022-11-03 02:25:48,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:48,455 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2022-11-03 02:25:48,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:25:48,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:48,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:48,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:48,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:48,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:48,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:48,657 INFO L85 PathProgramCache]: Analyzing trace with hash 311933747, now seen corresponding path program 1 times [2022-11-03 02:25:48,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:48,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690393498] [2022-11-03 02:25:48,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:48,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:48,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:48,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:48,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:25:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:48,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:25:48,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:48,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:48,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:48,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690393498] [2022-11-03 02:25:48,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690393498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:48,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:48,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:48,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910509296] [2022-11-03 02:25:48,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:48,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:48,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:48,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:48,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:48,840 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:48,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:48,912 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2022-11-03 02:25:48,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:48,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-03 02:25:48,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:48,914 INFO L225 Difference]: With dead ends: 88 [2022-11-03 02:25:48,914 INFO L226 Difference]: Without dead ends: 56 [2022-11-03 02:25:48,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:48,915 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:48,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:48,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-03 02:25:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-03 02:25:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-11-03 02:25:48,924 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 30 [2022-11-03 02:25:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:48,924 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-11-03 02:25:48,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-11-03 02:25:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:25:48,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:48,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:48,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:49,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:49,139 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:49,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:49,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1868306222, now seen corresponding path program 1 times [2022-11-03 02:25:49,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:49,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341474939] [2022-11-03 02:25:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:49,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:49,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:49,141 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:49,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:25:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:49,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:49,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:04,691 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__S~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 129.0))) (let ((.cse0 (fp.neg .cse3)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1| |ULTIMATE.start_main_~main__D~0#1|)) .cse0)) (fp.geq .cse1 .cse0) (fp.leq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (fp.leq .cse1 .cse3) (fp.geq .cse2 (_ +zero 11 53)) (fp.geq |ULTIMATE.start_main_~main__R~0#1| |ULTIMATE.start_main_~main__D~0#1|))))) is different from false [2022-11-03 02:27:06,705 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__S~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 129.0))) (let ((.cse0 (fp.neg .cse3)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1| |ULTIMATE.start_main_~main__D~0#1|)) .cse0)) (fp.geq .cse1 .cse0) (fp.leq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (fp.leq .cse1 .cse3) (fp.geq .cse2 (_ +zero 11 53)) (fp.geq |ULTIMATE.start_main_~main__R~0#1| |ULTIMATE.start_main_~main__D~0#1|))))) is different from true [2022-11-03 02:27:29,910 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__S~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1| |ULTIMATE.start_main_~main__D~0#1|)) .cse0)) (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1|) .cse0) (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (fp.geq .cse1 (_ +zero 11 53)) (fp.geq |ULTIMATE.start_main_~main__R~0#1| |ULTIMATE.start_main_~main__D~0#1|)))) is different from false [2022-11-03 02:27:31,923 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__S~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1| |ULTIMATE.start_main_~main__D~0#1|)) .cse0)) (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1|) .cse0) (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (fp.geq .cse1 (_ +zero 11 53)) (fp.geq |ULTIMATE.start_main_~main__R~0#1| |ULTIMATE.start_main_~main__D~0#1|)))) is different from true [2022-11-03 02:28:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:28:07,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:28:07,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:28:07,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341474939] [2022-11-03 02:28:07,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341474939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:07,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:07,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:28:07,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85279441] [2022-11-03 02:28:07,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:07,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:28:07,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:28:07,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:28:07,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=38, Unknown=11, NotChecked=30, Total=110 [2022-11-03 02:28:07,851 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:28:15,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:18,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:43,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:45,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:16,625 WARN L234 SmtUtils]: Spent 11.00s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:21,070 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__S~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (exists ((|ULTIMATE.start_main_~main__S~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse6 ((_ to_fp 11 53) roundNearestTiesToEven 129.0))) (let ((.cse3 (fp.neg .cse6)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1|)) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1| |ULTIMATE.start_main_~main__D~0#1|)) .cse3)) (fp.geq .cse4 .cse3) (fp.leq .cse5 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (fp.leq .cse4 .cse6) (fp.geq .cse5 (_ +zero 11 53)) (fp.geq |ULTIMATE.start_main_~main__R~0#1| |ULTIMATE.start_main_~main__D~0#1|))))) (fp.geq .cse2 (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-03 02:29:29,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:29,684 INFO L93 Difference]: Finished difference Result 135 states and 152 transitions. [2022-11-03 02:29:29,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:29:29,689 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-03 02:29:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:29,689 INFO L225 Difference]: With dead ends: 135 [2022-11-03 02:29:29,690 INFO L226 Difference]: Without dead ends: 133 [2022-11-03 02:29:29,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 90.0s TimeCoverageRelationStatistics Valid=52, Invalid=69, Unknown=23, NotChecked=66, Total=210 [2022-11-03 02:29:29,691 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 109 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:29,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 82 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 104 Invalid, 4 Unknown, 214 Unchecked, 32.8s Time] [2022-11-03 02:29:29,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-03 02:29:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2022-11-03 02:29:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 91 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2022-11-03 02:29:29,711 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 31 [2022-11-03 02:29:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:29,712 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2022-11-03 02:29:29,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2022-11-03 02:29:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:29:29,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:29,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:29,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-03 02:29:29,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:29,933 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash 288009802, now seen corresponding path program 1 times [2022-11-03 02:29:29,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:29,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590394084] [2022-11-03 02:29:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:29,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:29,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:29,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:29,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:29:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:30,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:29:30,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:54,800 WARN L234 SmtUtils]: Spent 8.95s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:22,117 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__S~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1| |ULTIMATE.start_main_~main__D~0#1|))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 129.0))) (and (not (fp.leq .cse0 .cse1)) (fp.leq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1|) .cse1) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53)) (fp.geq .cse0 (fp.neg .cse1))))) is different from false [2022-11-03 02:31:24,136 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__S~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1| |ULTIMATE.start_main_~main__D~0#1|))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 129.0))) (and (not (fp.leq .cse0 .cse1)) (fp.leq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__S~0#1|) .cse1) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53)) (fp.geq .cse0 (fp.neg .cse1))))) is different from true [2022-11-03 02:32:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:32:33,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:32:33,887 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:32:33,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590394084] [2022-11-03 02:32:33,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590394084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:33,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:33,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:32:33,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215460246] [2022-11-03 02:32:33,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:33,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:32:33,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:32:33,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:32:33,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=44, Unknown=13, NotChecked=16, Total=110 [2022-11-03 02:32:33,888 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:47,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:13,409 WARN L234 SmtUtils]: Spent 12.11s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:33:15,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:18,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:18,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:18,604 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2022-11-03 02:33:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:33:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-03 02:33:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:18,618 INFO L225 Difference]: With dead ends: 103 [2022-11-03 02:33:18,618 INFO L226 Difference]: Without dead ends: 101 [2022-11-03 02:33:18,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 86.0s TimeCoverageRelationStatistics Valid=42, Invalid=54, Unknown=18, NotChecked=18, Total=132 [2022-11-03 02:33:18,618 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:18,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 50 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 2 Unknown, 88 Unchecked, 19.2s Time] [2022-11-03 02:33:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-03 02:33:18,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2022-11-03 02:33:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 92 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2022-11-03 02:33:18,632 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 31 [2022-11-03 02:33:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:18,632 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2022-11-03 02:33:18,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:18,632 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2022-11-03 02:33:18,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:33:18,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:18,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:18,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:18,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:18,853 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:18,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:18,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1470124237, now seen corresponding path program 1 times [2022-11-03 02:33:18,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:18,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896899399] [2022-11-03 02:33:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:18,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:18,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:18,855 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:18,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8238f0d1-6094-4020-917e-b4e7976ccfb6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:33:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:19,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:33:19,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:50,759 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_22| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_22|)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.geq |v_ULTIMATE.start_main_~main__R~0#1_14| |v_ULTIMATE.start_main_~main__D~0#1_22|) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_22|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse0 (_ +zero 11 53))))) is different from false [2022-11-03 02:34:52,776 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_22| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_22|)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.geq |v_ULTIMATE.start_main_~main__R~0#1_14| |v_ULTIMATE.start_main_~main__D~0#1_22|) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_22|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse0 (_ +zero 11 53))))) is different from true [2022-11-03 02:35:21,849 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_22| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_22|))) (and (fp.geq |v_ULTIMATE.start_main_~main__R~0#1_14| |v_ULTIMATE.start_main_~main__D~0#1_22|) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_22|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|) .cse0) (fp.leq .cse1 .cse0) (fp.geq .cse1 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|))))) is different from false [2022-11-03 02:35:23,864 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_22| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_22|))) (and (fp.geq |v_ULTIMATE.start_main_~main__R~0#1_14| |v_ULTIMATE.start_main_~main__D~0#1_22|) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_22|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|) .cse0) (fp.leq .cse1 .cse0) (fp.geq .cse1 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|))))) is different from true [2022-11-03 02:36:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:12,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:12,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:12,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896899399] [2022-11-03 02:36:12,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896899399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:12,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:12,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:36:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340179601] [2022-11-03 02:36:12,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:12,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:36:12,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:12,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:36:12,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=80, Unknown=10, NotChecked=42, Total=182 [2022-11-03 02:36:12,806 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)