./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.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_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/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_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/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_c0a6383a-00a3-4a82-9906-2a85d375fc62/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 e80d4f8b0edf8f5c4127bb92c8390ef5eb0df30ae80a58b9f994310767a3efd9 --- 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 02:20:18,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:20:18,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:20:18,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:20:18,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:20:18,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:20:18,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:20:18,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:20:18,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:20:18,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:20:18,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:20:18,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:20:18,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:20:18,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:20:18,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:20:18,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:20:18,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:20:18,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:20:18,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:20:18,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:20:18,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:20:18,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:20:18,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:20:18,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:20:18,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:20:18,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:20:18,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:20:18,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:20:18,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:20:18,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:20:18,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:20:18,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:20:18,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:20:18,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:20:18,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:20:18,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:20:18,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:20:18,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:20:18,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:20:18,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:20:18,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:20:18,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:20:18,492 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:20:18,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:20:18,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:20:18,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:20:18,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:20:18,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:20:18,495 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:20:18,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:20:18,495 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:20:18,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:20:18,496 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:20:18,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:20:18,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:20:18,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:20:18,497 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:20:18,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:20:18,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:20:18,498 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:20:18,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:20:18,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:20:18,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:20:18,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:20:18,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:20:18,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:20:18,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:20:18,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:20:18,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:20:18,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:20:18,502 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:20:18,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:20:18,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:20:18,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:20:18,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:18,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:20:18,504 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:20:18,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:20:18,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:20:18,504 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:20:18,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:20:18,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:20:18,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:20:18,505 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_c0a6383a-00a3-4a82-9906-2a85d375fc62/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e80d4f8b0edf8f5c4127bb92c8390ef5eb0df30ae80a58b9f994310767a3efd9 [2022-11-03 02:20:18,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:20:18,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:20:18,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:20:18,787 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:20:18,788 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:20:18,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c [2022-11-03 02:20:18,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/data/017ec8dfc/de331cbb1aea473f852aa1371d08b133/FLAG1b7ac376b [2022-11-03 02:20:20,028 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:20:20,028 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c [2022-11-03 02:20:20,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/data/017ec8dfc/de331cbb1aea473f852aa1371d08b133/FLAG1b7ac376b [2022-11-03 02:20:20,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/data/017ec8dfc/de331cbb1aea473f852aa1371d08b133 [2022-11-03 02:20:20,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:20:20,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:20:20,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:20,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:20:20,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:20:20,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:20" (1/1) ... [2022-11-03 02:20:20,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74931acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:20, skipping insertion in model container [2022-11-03 02:20:20,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:20" (1/1) ... [2022-11-03 02:20:20,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:20:20,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:20:22,673 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_c0a6383a-00a3-4a82-9906-2a85d375fc62/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c[380323,380336] [2022-11-03 02:20:22,705 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_c0a6383a-00a3-4a82-9906-2a85d375fc62/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c[383339,383352] [2022-11-03 02:20:23,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:23,106 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:20:24,324 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_c0a6383a-00a3-4a82-9906-2a85d375fc62/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c[380323,380336] [2022-11-03 02:20:24,332 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_c0a6383a-00a3-4a82-9906-2a85d375fc62/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c[383339,383352] [2022-11-03 02:20:24,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:24,445 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:20:24,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24 WrapperNode [2022-11-03 02:20:24,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:24,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:24,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:20:24,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:20:24,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:24,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,034 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13204 [2022-11-03 02:20:25,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:25,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:20:25,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:20:25,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:20:25,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,478 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:20:25,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:20:25,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:20:25,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:20:25,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (1/1) ... [2022-11-03 02:20:25,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:25,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:25,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:20:25,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:20:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:20:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-03 02:20:25,754 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-03 02:20:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 02:20:25,754 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 02:20:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-03 02:20:25,754 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-03 02:20:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-03 02:20:25,755 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-03 02:20:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-03 02:20:25,755 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-03 02:20:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-03 02:20:25,755 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-03 02:20:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-03 02:20:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-03 02:20:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:20:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:20:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:20:25,972 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:20:25,974 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:20:35,123 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:20:37,794 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:20:37,794 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-03 02:20:37,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:37 BoogieIcfgContainer [2022-11-03 02:20:37,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:20:37,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:20:37,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:20:37,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:20:37,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:20:20" (1/3) ... [2022-11-03 02:20:37,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409d6831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:37, skipping insertion in model container [2022-11-03 02:20:37,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:24" (2/3) ... [2022-11-03 02:20:37,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409d6831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:37, skipping insertion in model container [2022-11-03 02:20:37,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:37" (3/3) ... [2022-11-03 02:20:37,808 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.12.cil-1.c [2022-11-03 02:20:37,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:20:37,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:20:37,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:20:37,922 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;@4c279862, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:20:37,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:20:37,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 1837 states, 1799 states have (on average 1.9560867148415786) internal successors, (3519), 1804 states have internal predecessors, (3519), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-03 02:20:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 02:20:37,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:37,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:37,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash 898139232, now seen corresponding path program 1 times [2022-11-03 02:20:37,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:37,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727207134] [2022-11-03 02:20:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:37,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:38,492 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 02:20:38,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:38,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727207134] [2022-11-03 02:20:38,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727207134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:38,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:38,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:20:38,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725285142] [2022-11-03 02:20:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:38,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:20:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:38,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:20:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:20:38,550 INFO L87 Difference]: Start difference. First operand has 1837 states, 1799 states have (on average 1.9560867148415786) internal successors, (3519), 1804 states have internal predecessors, (3519), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:20:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:39,792 INFO L93 Difference]: Finished difference Result 3844 states and 7447 transitions. [2022-11-03 02:20:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:20:39,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-03 02:20:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:39,825 INFO L225 Difference]: With dead ends: 3844 [2022-11-03 02:20:39,825 INFO L226 Difference]: Without dead ends: 2006 [2022-11-03 02:20:39,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:20:39,841 INFO L413 NwaCegarLoop]: 3518 mSDtfsCounter, 3787 mSDsluCounter, 3727 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 6936 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:39,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3787 Valid, 6936 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:20:39,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2022-11-03 02:20:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 2005. [2022-11-03 02:20:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 1941 states have (on average 1.919629057187017) internal successors, (3726), 1945 states have internal predecessors, (3726), 50 states have call successors, (50), 13 states have call predecessors, (50), 12 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-03 02:20:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 3824 transitions. [2022-11-03 02:20:40,016 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 3824 transitions. Word has length 68 [2022-11-03 02:20:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:40,018 INFO L495 AbstractCegarLoop]: Abstraction has 2005 states and 3824 transitions. [2022-11-03 02:20:40,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:20:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 3824 transitions. [2022-11-03 02:20:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:20:40,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:40,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:40,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:20:40,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1485406557, now seen corresponding path program 1 times [2022-11-03 02:20:40,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:40,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977634930] [2022-11-03 02:20:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:40,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:40,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:40,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977634930] [2022-11-03 02:20:40,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977634930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:40,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837584156] [2022-11-03 02:20:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:40,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:40,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:40,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:40,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:20:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:40,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:40,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:20:40,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:40,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837584156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:40,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:40,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:20:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221686241] [2022-11-03 02:20:40,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:40,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:40,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:40,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:40,761 INFO L87 Difference]: Start difference. First operand 2005 states and 3824 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:41,264 INFO L93 Difference]: Finished difference Result 2716 states and 4939 transitions. [2022-11-03 02:20:41,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:41,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-03 02:20:41,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:41,279 INFO L225 Difference]: With dead ends: 2716 [2022-11-03 02:20:41,279 INFO L226 Difference]: Without dead ends: 2357 [2022-11-03 02:20:41,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:41,284 INFO L413 NwaCegarLoop]: 3357 mSDtfsCounter, 3515 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:41,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3515 Valid, 3589 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2022-11-03 02:20:41,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2351. [2022-11-03 02:20:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 2233 states have (on average 1.8669950738916257) internal successors, (4169), 2238 states have internal predecessors, (4169), 92 states have call successors, (92), 25 states have call predecessors, (92), 24 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-11-03 02:20:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 4351 transitions. [2022-11-03 02:20:41,385 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 4351 transitions. Word has length 137 [2022-11-03 02:20:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:41,388 INFO L495 AbstractCegarLoop]: Abstraction has 2351 states and 4351 transitions. [2022-11-03 02:20:41,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 4351 transitions. [2022-11-03 02:20:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:20:41,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:41,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:41,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:41,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:41,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:41,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1514292797, now seen corresponding path program 1 times [2022-11-03 02:20:41,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:41,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875776919] [2022-11-03 02:20:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:41,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:41,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:41,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875776919] [2022-11-03 02:20:41,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875776919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:41,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443451642] [2022-11-03 02:20:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:41,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:41,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:41,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:41,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:20:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:42,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:42,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:20:42,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:42,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443451642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:42,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:42,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:20:42,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130209971] [2022-11-03 02:20:42,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:42,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:42,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:42,228 INFO L87 Difference]: Start difference. First operand 2351 states and 4351 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:42,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:42,798 INFO L93 Difference]: Finished difference Result 3748 states and 6538 transitions. [2022-11-03 02:20:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:42,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-03 02:20:42,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:42,814 INFO L225 Difference]: With dead ends: 3748 [2022-11-03 02:20:42,814 INFO L226 Difference]: Without dead ends: 3043 [2022-11-03 02:20:42,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:42,823 INFO L413 NwaCegarLoop]: 3317 mSDtfsCounter, 3509 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:42,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3509 Valid, 3549 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:20:42,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2022-11-03 02:20:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3035. [2022-11-03 02:20:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2811 states have (on average 1.7940234791889007) internal successors, (5043), 2818 states have internal predecessors, (5043), 174 states have call successors, (174), 49 states have call predecessors, (174), 48 states have return successors, (172), 168 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-03 02:20:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 5389 transitions. [2022-11-03 02:20:42,953 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 5389 transitions. Word has length 137 [2022-11-03 02:20:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:42,954 INFO L495 AbstractCegarLoop]: Abstraction has 3035 states and 5389 transitions. [2022-11-03 02:20:42,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 5389 transitions. [2022-11-03 02:20:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:20:42,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:42,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:42,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:43,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:43,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:43,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:43,187 INFO L85 PathProgramCache]: Analyzing trace with hash 866661149, now seen corresponding path program 1 times [2022-11-03 02:20:43,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:43,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676719390] [2022-11-03 02:20:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:43,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:43,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:43,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676719390] [2022-11-03 02:20:43,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676719390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:43,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738949887] [2022-11-03 02:20:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:43,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:43,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:43,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:43,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:20:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:43,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:43,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 02:20:43,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:43,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738949887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:43,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:43,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:20:43,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965206184] [2022-11-03 02:20:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:43,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:43,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:43,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:43,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:43,718 INFO L87 Difference]: Start difference. First operand 3035 states and 5389 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:44,304 INFO L93 Difference]: Finished difference Result 5788 states and 9686 transitions. [2022-11-03 02:20:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:44,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-03 02:20:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:44,325 INFO L225 Difference]: With dead ends: 5788 [2022-11-03 02:20:44,325 INFO L226 Difference]: Without dead ends: 4399 [2022-11-03 02:20:44,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:44,333 INFO L413 NwaCegarLoop]: 3344 mSDtfsCounter, 3533 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:44,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 3576 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-11-03 02:20:44,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4387. [2022-11-03 02:20:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 3955 states have (on average 1.710998735777497) internal successors, (6767), 3966 states have internal predecessors, (6767), 334 states have call successors, (334), 97 states have call predecessors, (334), 96 states have return successors, (332), 324 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-03 02:20:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 7433 transitions. [2022-11-03 02:20:44,621 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 7433 transitions. Word has length 137 [2022-11-03 02:20:44,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:44,621 INFO L495 AbstractCegarLoop]: Abstraction has 4387 states and 7433 transitions. [2022-11-03 02:20:44,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 7433 transitions. [2022-11-03 02:20:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:20:44,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:44,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:44,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:44,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:44,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:44,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1622310915, now seen corresponding path program 1 times [2022-11-03 02:20:44,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:44,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517436672] [2022-11-03 02:20:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:44,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:45,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:45,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517436672] [2022-11-03 02:20:45,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517436672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:45,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467659092] [2022-11-03 02:20:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:45,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:45,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:45,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:45,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:20:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:45,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:45,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 02:20:45,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:45,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467659092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:45,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:45,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:20:45,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578622357] [2022-11-03 02:20:45,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:45,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:45,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:45,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:45,370 INFO L87 Difference]: Start difference. First operand 4387 states and 7433 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:46,098 INFO L93 Difference]: Finished difference Result 9820 states and 15882 transitions. [2022-11-03 02:20:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:46,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-03 02:20:46,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:46,137 INFO L225 Difference]: With dead ends: 9820 [2022-11-03 02:20:46,138 INFO L226 Difference]: Without dead ends: 7079 [2022-11-03 02:20:46,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:46,152 INFO L413 NwaCegarLoop]: 3317 mSDtfsCounter, 3527 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:46,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 3549 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:20:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7079 states. [2022-11-03 02:20:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7079 to 7059. [2022-11-03 02:20:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7059 states, 6219 states have (on average 1.6348287506029908) internal successors, (10167), 6238 states have internal predecessors, (10167), 646 states have call successors, (646), 193 states have call predecessors, (646), 192 states have return successors, (644), 628 states have call predecessors, (644), 644 states have call successors, (644) [2022-11-03 02:20:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 11457 transitions. [2022-11-03 02:20:46,448 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 11457 transitions. Word has length 137 [2022-11-03 02:20:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:46,449 INFO L495 AbstractCegarLoop]: Abstraction has 7059 states and 11457 transitions. [2022-11-03 02:20:46,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 11457 transitions. [2022-11-03 02:20:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:20:46,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:46,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:46,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:46,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:46,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash -794430243, now seen corresponding path program 1 times [2022-11-03 02:20:46,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:46,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708452764] [2022-11-03 02:20:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:46,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:46,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:46,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708452764] [2022-11-03 02:20:46,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708452764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:46,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524266901] [2022-11-03 02:20:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:46,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:46,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:46,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:46,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:20:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:47,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:47,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:20:47,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:47,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524266901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:47,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:47,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:20:47,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367632292] [2022-11-03 02:20:47,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:47,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:47,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:47,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:47,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:47,170 INFO L87 Difference]: Start difference. First operand 7059 states and 11457 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:47,977 INFO L93 Difference]: Finished difference Result 17788 states and 28074 transitions. [2022-11-03 02:20:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:47,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-03 02:20:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:48,040 INFO L225 Difference]: With dead ends: 17788 [2022-11-03 02:20:48,040 INFO L226 Difference]: Without dead ends: 12375 [2022-11-03 02:20:48,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:48,066 INFO L413 NwaCegarLoop]: 3353 mSDtfsCounter, 3536 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:48,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3536 Valid, 3585 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12375 states. [2022-11-03 02:20:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12375 to 12339. [2022-11-03 02:20:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12339 states, 10699 states have (on average 1.5768763435835125) internal successors, (16871), 10734 states have internal predecessors, (16871), 1254 states have call successors, (1254), 385 states have call predecessors, (1254), 384 states have return successors, (1252), 1220 states have call predecessors, (1252), 1252 states have call successors, (1252) [2022-11-03 02:20:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12339 states to 12339 states and 19377 transitions. [2022-11-03 02:20:48,797 INFO L78 Accepts]: Start accepts. Automaton has 12339 states and 19377 transitions. Word has length 137 [2022-11-03 02:20:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:48,797 INFO L495 AbstractCegarLoop]: Abstraction has 12339 states and 19377 transitions. [2022-11-03 02:20:48,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12339 states and 19377 transitions. [2022-11-03 02:20:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:20:48,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:48,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:48,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:49,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:20:49,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:49,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1445790723, now seen corresponding path program 1 times [2022-11-03 02:20:49,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:49,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549926198] [2022-11-03 02:20:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:49,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:49,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:49,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549926198] [2022-11-03 02:20:49,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549926198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:49,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667634119] [2022-11-03 02:20:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:49,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:49,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:49,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:49,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:20:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:49,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:49,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:20:49,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:49,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667634119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:49,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:49,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:20:49,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234314131] [2022-11-03 02:20:49,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:49,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:49,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:49,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:49,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:49,541 INFO L87 Difference]: Start difference. First operand 12339 states and 19377 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:50,868 INFO L93 Difference]: Finished difference Result 33532 states and 52058 transitions. [2022-11-03 02:20:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:50,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-03 02:20:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:50,973 INFO L225 Difference]: With dead ends: 33532 [2022-11-03 02:20:50,974 INFO L226 Difference]: Without dead ends: 22839 [2022-11-03 02:20:51,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:51,012 INFO L413 NwaCegarLoop]: 3317 mSDtfsCounter, 3506 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3506 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:51,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3506 Valid, 3549 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:51,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22839 states. [2022-11-03 02:20:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22839 to 22771. [2022-11-03 02:20:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22771 states, 19563 states have (on average 1.537954301487502) internal successors, (30087), 19630 states have internal predecessors, (30087), 2438 states have call successors, (2438), 769 states have call predecessors, (2438), 768 states have return successors, (2436), 2372 states have call predecessors, (2436), 2436 states have call successors, (2436) [2022-11-03 02:20:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22771 states to 22771 states and 34961 transitions. [2022-11-03 02:20:52,359 INFO L78 Accepts]: Start accepts. Automaton has 22771 states and 34961 transitions. Word has length 137 [2022-11-03 02:20:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:52,359 INFO L495 AbstractCegarLoop]: Abstraction has 22771 states and 34961 transitions. [2022-11-03 02:20:52,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand 22771 states and 34961 transitions. [2022-11-03 02:20:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:20:52,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:52,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:52,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:52,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:52,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:52,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:52,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1235172125, now seen corresponding path program 1 times [2022-11-03 02:20:52,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:52,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388311995] [2022-11-03 02:20:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:52,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:20:52,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:52,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388311995] [2022-11-03 02:20:52,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388311995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:52,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119337991] [2022-11-03 02:20:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:52,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:52,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:52,861 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:52,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:20:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:53,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:53,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:20:53,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:53,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119337991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:53,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:53,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 02:20:53,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433113727] [2022-11-03 02:20:53,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:53,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:53,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:53,375 INFO L87 Difference]: Start difference. First operand 22771 states and 34961 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:55,207 INFO L93 Difference]: Finished difference Result 64636 states and 99226 transitions. [2022-11-03 02:20:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:55,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-03 02:20:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:55,412 INFO L225 Difference]: With dead ends: 64636 [2022-11-03 02:20:55,413 INFO L226 Difference]: Without dead ends: 43511 [2022-11-03 02:20:55,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:55,484 INFO L413 NwaCegarLoop]: 3317 mSDtfsCounter, 3521 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:55,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3521 Valid, 3549 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43511 states. [2022-11-03 02:20:57,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43511 to 43379. [2022-11-03 02:20:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43379 states, 37099 states have (on average 1.5131135610124262) internal successors, (56135), 37230 states have internal predecessors, (56135), 4742 states have call successors, (4742), 1537 states have call predecessors, (4742), 1536 states have return successors, (4740), 4612 states have call predecessors, (4740), 4740 states have call successors, (4740) [2022-11-03 02:20:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43379 states to 43379 states and 65617 transitions. [2022-11-03 02:20:57,693 INFO L78 Accepts]: Start accepts. Automaton has 43379 states and 65617 transitions. Word has length 137 [2022-11-03 02:20:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:57,694 INFO L495 AbstractCegarLoop]: Abstraction has 43379 states and 65617 transitions. [2022-11-03 02:20:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 43379 states and 65617 transitions. [2022-11-03 02:20:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:20:57,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:57,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:57,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:58,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:58,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:58,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:58,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1339500547, now seen corresponding path program 1 times [2022-11-03 02:20:58,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:58,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097564166] [2022-11-03 02:20:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:58,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 02:20:59,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097564166] [2022-11-03 02:20:59,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097564166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:59,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:59,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:59,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392664954] [2022-11-03 02:20:59,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:59,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:59,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:59,021 INFO L87 Difference]: Start difference. First operand 43379 states and 65617 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 02:21:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:04,939 INFO L93 Difference]: Finished difference Result 147579 states and 220888 transitions. [2022-11-03 02:21:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:21:04,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 137 [2022-11-03 02:21:04,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:05,501 INFO L225 Difference]: With dead ends: 147579 [2022-11-03 02:21:05,502 INFO L226 Difference]: Without dead ends: 105847 [2022-11-03 02:21:05,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:21:05,624 INFO L413 NwaCegarLoop]: 3319 mSDtfsCounter, 4350 mSDsluCounter, 10529 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4371 SdHoareTripleChecker+Valid, 13087 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:05,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4371 Valid, 13087 Invalid, 1388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [158 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:21:05,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105847 states. [2022-11-03 02:21:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105847 to 83571. [2022-11-03 02:21:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83571 states, 71275 states have (on average 1.4969484391441599) internal successors, (106695), 71534 states have internal predecessors, (106695), 9222 states have call successors, (9222), 3073 states have call predecessors, (9222), 3072 states have return successors, (9220), 8964 states have call predecessors, (9220), 9220 states have call successors, (9220) [2022-11-03 02:21:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83571 states to 83571 states and 125137 transitions. [2022-11-03 02:21:10,925 INFO L78 Accepts]: Start accepts. Automaton has 83571 states and 125137 transitions. Word has length 137 [2022-11-03 02:21:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:10,927 INFO L495 AbstractCegarLoop]: Abstraction has 83571 states and 125137 transitions. [2022-11-03 02:21:10,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 02:21:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 83571 states and 125137 transitions. [2022-11-03 02:21:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 02:21:11,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:11,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:11,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:21:11,468 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:11,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:11,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1056599927, now seen corresponding path program 1 times [2022-11-03 02:21:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:11,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764501857] [2022-11-03 02:21:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 02:21:11,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:11,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764501857] [2022-11-03 02:21:11,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764501857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:11,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134860405] [2022-11-03 02:21:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:11,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:11,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:11,874 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:11,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a6383a-00a3-4a82-9906-2a85d375fc62/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:21:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:12,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:12,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-03 02:21:12,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:12,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134860405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:12,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:21:12,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 02:21:12,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368583332] [2022-11-03 02:21:12,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:12,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:12,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:12,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:12,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:12,172 INFO L87 Difference]: Start difference. First operand 83571 states and 125137 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:21:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:16,876 INFO L93 Difference]: Finished difference Result 147191 states and 223572 transitions. [2022-11-03 02:21:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:16,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 159 [2022-11-03 02:21:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:17,353 INFO L225 Difference]: With dead ends: 147191 [2022-11-03 02:21:17,353 INFO L226 Difference]: Without dead ends: 105203 [2022-11-03 02:21:17,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:17,491 INFO L413 NwaCegarLoop]: 3427 mSDtfsCounter, 125 mSDsluCounter, 3566 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 6736 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:17,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 6736 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:21:17,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105203 states.