./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.07.cil.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_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/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_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.07.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/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_9d687016-3361-49f5-8e23-dee9c948361e/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 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f --- 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 02:30:13,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:30:13,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:30:13,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:30:13,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:30:13,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:30:13,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:30:13,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:30:13,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:30:13,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:30:13,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:30:13,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:30:13,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:30:13,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:30:13,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:30:13,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:30:13,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:30:13,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:30:13,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:30:13,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:30:13,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:30:13,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:30:13,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:30:13,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:30:13,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:30:13,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:30:13,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:30:13,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:30:13,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:30:13,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:30:13,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:30:13,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:30:13,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:30:13,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:30:13,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:30:13,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:30:13,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:30:13,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:30:13,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:30:13,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:30:13,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:30:13,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:30:13,649 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:30:13,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:30:13,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:30:13,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:30:13,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:30:13,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:30:13,652 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:30:13,653 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:30:13,653 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:30:13,653 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:30:13,655 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:30:13,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:30:13,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:30:13,656 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:30:13,656 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:30:13,656 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:30:13,657 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:30:13,657 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:30:13,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:30:13,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:30:13,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:30:13,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:30:13,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:30:13,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:30:13,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:30:13,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:30:13,662 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:30:13,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:30:13,662 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:30:13,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:30:13,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:30:13,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:30:13,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:30:13,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:30:13,664 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:30:13,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:30:13,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:30:13,665 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:30:13,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:30:13,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:30:13,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:30:13,666 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_9d687016-3361-49f5-8e23-dee9c948361e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f [2022-11-03 02:30:14,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:30:14,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:30:14,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:30:14,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:30:14,159 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:30:14,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/systemc/transmitter.07.cil.c [2022-11-03 02:30:14,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/data/38f155400/8ec36175544a41e193960d855c404f99/FLAG124af648d [2022-11-03 02:30:14,890 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:30:14,907 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/sv-benchmarks/c/systemc/transmitter.07.cil.c [2022-11-03 02:30:14,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/data/38f155400/8ec36175544a41e193960d855c404f99/FLAG124af648d [2022-11-03 02:30:15,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/data/38f155400/8ec36175544a41e193960d855c404f99 [2022-11-03 02:30:15,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:30:15,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:30:15,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:30:15,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:30:15,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:30:15,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f2ad7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15, skipping insertion in model container [2022-11-03 02:30:15,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:30:15,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:30:15,578 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_9d687016-3361-49f5-8e23-dee9c948361e/sv-benchmarks/c/systemc/transmitter.07.cil.c[706,719] [2022-11-03 02:30:15,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:30:15,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:30:15,750 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_9d687016-3361-49f5-8e23-dee9c948361e/sv-benchmarks/c/systemc/transmitter.07.cil.c[706,719] [2022-11-03 02:30:15,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:30:15,855 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:30:15,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15 WrapperNode [2022-11-03 02:30:15,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:30:15,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:30:15,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:30:15,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:30:15,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,926 INFO L138 Inliner]: procedures = 42, calls = 51, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 549 [2022-11-03 02:30:15,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:30:15,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:30:15,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:30:15,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:30:15,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,976 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:30:15,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:30:15,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:30:15,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:30:15,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (1/1) ... [2022-11-03 02:30:15,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:30:16,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:16,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:30:16,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d687016-3361-49f5-8e23-dee9c948361e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:30:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:30:16,144 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-03 02:30:16,144 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-03 02:30:16,144 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-03 02:30:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-03 02:30:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 02:30:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 02:30:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-03 02:30:16,146 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-03 02:30:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-03 02:30:16,146 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-03 02:30:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:30:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-03 02:30:16,147 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-03 02:30:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:30:16,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:30:16,334 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:30:16,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:30:17,317 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:30:17,828 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:30:17,829 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-03 02:30:17,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:30:17 BoogieIcfgContainer [2022-11-03 02:30:17,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:30:17,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:30:17,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:30:17,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:30:17,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:30:15" (1/3) ... [2022-11-03 02:30:17,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4185bab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:30:17, skipping insertion in model container [2022-11-03 02:30:17,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:30:15" (2/3) ... [2022-11-03 02:30:17,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4185bab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:30:17, skipping insertion in model container [2022-11-03 02:30:17,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:30:17" (3/3) ... [2022-11-03 02:30:17,845 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.07.cil.c [2022-11-03 02:30:17,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:30:17,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:30:17,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:30:17,951 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;@ecd2d12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:30:17,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:30:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 103 states have (on average 1.5436893203883495) internal successors, (159), 105 states have internal predecessors, (159), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-03 02:30:17,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 02:30:17,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:17,973 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] [2022-11-03 02:30:17,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:17,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1870750755, now seen corresponding path program 1 times [2022-11-03 02:30:17,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:17,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795610243] [2022-11-03 02:30:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:17,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:18,667 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 02:30:18,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:18,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795610243] [2022-11-03 02:30:18,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795610243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:18,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:18,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:30:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595248820] [2022-11-03 02:30:18,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:18,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:30:18,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:30:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:30:18,741 INFO L87 Difference]: Start difference. First operand has 131 states, 103 states have (on average 1.5436893203883495) internal successors, (159), 105 states have internal predecessors, (159), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:19,345 INFO L93 Difference]: Finished difference Result 376 states and 589 transitions. [2022-11-03 02:30:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:30:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-03 02:30:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:19,362 INFO L225 Difference]: With dead ends: 376 [2022-11-03 02:30:19,362 INFO L226 Difference]: Without dead ends: 246 [2022-11-03 02:30:19,371 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 02:30:19,376 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 334 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:19,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 518 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:30:19,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-03 02:30:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2022-11-03 02:30:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 195 states have (on average 1.476923076923077) internal successors, (288), 196 states have internal predecessors, (288), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-03 02:30:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2022-11-03 02:30:19,472 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 57 [2022-11-03 02:30:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:19,472 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2022-11-03 02:30:19,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2022-11-03 02:30:19,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 02:30:19,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:19,477 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] [2022-11-03 02:30:19,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:30:19,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash 530774366, now seen corresponding path program 1 times [2022-11-03 02:30:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:19,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766450357] [2022-11-03 02:30:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:19,692 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 02:30:19,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:19,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766450357] [2022-11-03 02:30:19,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766450357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:19,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:19,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:19,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976593868] [2022-11-03 02:30:19,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:19,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:19,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:19,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:19,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:19,697 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:20,574 INFO L93 Difference]: Finished difference Result 825 states and 1227 transitions. [2022-11-03 02:30:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:30:20,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-03 02:30:20,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:20,583 INFO L225 Difference]: With dead ends: 825 [2022-11-03 02:30:20,591 INFO L226 Difference]: Without dead ends: 566 [2022-11-03 02:30:20,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:30:20,597 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 680 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:20,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 828 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:30:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-03 02:30:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 554. [2022-11-03 02:30:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 457 states have (on average 1.4704595185995624) internal successors, (672), 452 states have internal predecessors, (672), 68 states have call successors, (68), 26 states have call predecessors, (68), 28 states have return successors, (76), 76 states have call predecessors, (76), 68 states have call successors, (76) [2022-11-03 02:30:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 816 transitions. [2022-11-03 02:30:20,718 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 816 transitions. Word has length 57 [2022-11-03 02:30:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:20,720 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 816 transitions. [2022-11-03 02:30:20,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 816 transitions. [2022-11-03 02:30:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 02:30:20,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:20,734 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] [2022-11-03 02:30:20,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:30:20,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:20,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:20,736 INFO L85 PathProgramCache]: Analyzing trace with hash 45599647, now seen corresponding path program 1 times [2022-11-03 02:30:20,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:20,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832542610] [2022-11-03 02:30:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:20,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:20,981 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 02:30:20,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:20,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832542610] [2022-11-03 02:30:20,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832542610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:20,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:20,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:20,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927231287] [2022-11-03 02:30:20,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:20,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:20,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:20,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:20,985 INFO L87 Difference]: Start difference. First operand 554 states and 816 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:21,713 INFO L93 Difference]: Finished difference Result 1925 states and 2870 transitions. [2022-11-03 02:30:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:30:21,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-03 02:30:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:21,724 INFO L225 Difference]: With dead ends: 1925 [2022-11-03 02:30:21,725 INFO L226 Difference]: Without dead ends: 1337 [2022-11-03 02:30:21,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:30:21,730 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 680 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:21,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 809 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:30:21,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-11-03 02:30:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1045. [2022-11-03 02:30:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 864 states have (on average 1.4699074074074074) internal successors, (1270), 860 states have internal predecessors, (1270), 124 states have call successors, (124), 50 states have call predecessors, (124), 56 states have return successors, (147), 135 states have call predecessors, (147), 124 states have call successors, (147) [2022-11-03 02:30:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1541 transitions. [2022-11-03 02:30:21,872 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1541 transitions. Word has length 57 [2022-11-03 02:30:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:21,872 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1541 transitions. [2022-11-03 02:30:21,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1541 transitions. [2022-11-03 02:30:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 02:30:21,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:21,875 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] [2022-11-03 02:30:21,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:30:21,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash 568920318, now seen corresponding path program 1 times [2022-11-03 02:30:21,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:21,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029628847] [2022-11-03 02:30:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:21,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:22,012 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 02:30:22,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:22,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029628847] [2022-11-03 02:30:22,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029628847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:22,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:22,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:22,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459269791] [2022-11-03 02:30:22,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:22,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:22,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:22,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:22,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:22,015 INFO L87 Difference]: Start difference. First operand 1045 states and 1541 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:22,812 INFO L93 Difference]: Finished difference Result 3566 states and 5337 transitions. [2022-11-03 02:30:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:30:22,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-03 02:30:22,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:22,834 INFO L225 Difference]: With dead ends: 3566 [2022-11-03 02:30:22,834 INFO L226 Difference]: Without dead ends: 2452 [2022-11-03 02:30:22,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:30:22,842 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 680 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:22,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 680 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:30:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2022-11-03 02:30:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2001. [2022-11-03 02:30:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1656 states have (on average 1.4673913043478262) internal successors, (2430), 1656 states have internal predecessors, (2430), 232 states have call successors, (232), 98 states have call predecessors, (232), 112 states have return successors, (283), 247 states have call predecessors, (283), 232 states have call successors, (283) [2022-11-03 02:30:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2945 transitions. [2022-11-03 02:30:23,092 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2945 transitions. Word has length 57 [2022-11-03 02:30:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:23,094 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 2945 transitions. [2022-11-03 02:30:23,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:23,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2945 transitions. [2022-11-03 02:30:23,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 02:30:23,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:23,100 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] [2022-11-03 02:30:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:30:23,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1487894941, now seen corresponding path program 1 times [2022-11-03 02:30:23,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:23,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088755947] [2022-11-03 02:30:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:23,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:23,283 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 02:30:23,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:23,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088755947] [2022-11-03 02:30:23,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088755947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:23,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:23,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:23,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861664126] [2022-11-03 02:30:23,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:23,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:23,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:23,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:23,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:23,286 INFO L87 Difference]: Start difference. First operand 2001 states and 2945 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:24,227 INFO L93 Difference]: Finished difference Result 6728 states and 10091 transitions. [2022-11-03 02:30:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:30:24,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-03 02:30:24,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:24,257 INFO L225 Difference]: With dead ends: 6728 [2022-11-03 02:30:24,258 INFO L226 Difference]: Without dead ends: 4590 [2022-11-03 02:30:24,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:30:24,269 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 682 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:24,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 681 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:30:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4590 states. [2022-11-03 02:30:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4590 to 3889. [2022-11-03 02:30:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3889 states, 3208 states have (on average 1.4607231920199502) internal successors, (4686), 3216 states have internal predecessors, (4686), 456 states have call successors, (456), 194 states have call predecessors, (456), 224 states have return successors, (567), 479 states have call predecessors, (567), 456 states have call successors, (567) [2022-11-03 02:30:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 5709 transitions. [2022-11-03 02:30:24,679 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 5709 transitions. Word has length 57 [2022-11-03 02:30:24,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:24,680 INFO L495 AbstractCegarLoop]: Abstraction has 3889 states and 5709 transitions. [2022-11-03 02:30:24,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:30:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 5709 transitions. [2022-11-03 02:30:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:30:24,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:24,685 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-11-03 02:30:24,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:30:24,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:24,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2137262399, now seen corresponding path program 1 times [2022-11-03 02:30:24,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:24,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536702472] [2022-11-03 02:30:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:24,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:30:25,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:25,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536702472] [2022-11-03 02:30:25,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536702472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:25,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:25,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:30:25,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337116793] [2022-11-03 02:30:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:25,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:30:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:25,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:30:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:30:25,091 INFO L87 Difference]: Start difference. First operand 3889 states and 5709 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:26,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:26,102 INFO L93 Difference]: Finished difference Result 11946 states and 17635 transitions. [2022-11-03 02:30:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:30:26,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 74 [2022-11-03 02:30:26,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:26,157 INFO L225 Difference]: With dead ends: 11946 [2022-11-03 02:30:26,158 INFO L226 Difference]: Without dead ends: 8063 [2022-11-03 02:30:26,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:30:26,173 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 678 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:26,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 462 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:30:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8063 states. [2022-11-03 02:30:26,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8063 to 6503. [2022-11-03 02:30:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 5426 states have (on average 1.4472908219683007) internal successors, (7853), 5441 states have internal predecessors, (7853), 692 states have call successors, (692), 324 states have call predecessors, (692), 384 states have return successors, (914), 738 states have call predecessors, (914), 692 states have call successors, (914) [2022-11-03 02:30:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 9459 transitions. [2022-11-03 02:30:26,927 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 9459 transitions. Word has length 74 [2022-11-03 02:30:26,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:26,928 INFO L495 AbstractCegarLoop]: Abstraction has 6503 states and 9459 transitions. [2022-11-03 02:30:26,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:26,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 9459 transitions. [2022-11-03 02:30:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 02:30:26,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:26,934 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-11-03 02:30:26,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:30:26,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash -128449713, now seen corresponding path program 1 times [2022-11-03 02:30:26,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:26,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273014342] [2022-11-03 02:30:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:26,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:30:27,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:27,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273014342] [2022-11-03 02:30:27,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273014342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:27,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:27,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:30:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628522391] [2022-11-03 02:30:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:27,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:30:27,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:27,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:30:27,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:30:27,328 INFO L87 Difference]: Start difference. First operand 6503 states and 9459 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:29,195 INFO L93 Difference]: Finished difference Result 23659 states and 34568 transitions. [2022-11-03 02:30:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:30:29,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 76 [2022-11-03 02:30:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:29,306 INFO L225 Difference]: With dead ends: 23659 [2022-11-03 02:30:29,306 INFO L226 Difference]: Without dead ends: 17162 [2022-11-03 02:30:29,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:30:29,333 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 660 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:29,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 512 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:30:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17162 states. [2022-11-03 02:30:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17162 to 12700. [2022-11-03 02:30:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12700 states, 10599 states have (on average 1.4392867251627512) internal successors, (15255), 10630 states have internal predecessors, (15255), 1332 states have call successors, (1332), 648 states have call predecessors, (1332), 768 states have return successors, (1746), 1422 states have call predecessors, (1746), 1332 states have call successors, (1746) [2022-11-03 02:30:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12700 states to 12700 states and 18333 transitions. [2022-11-03 02:30:31,133 INFO L78 Accepts]: Start accepts. Automaton has 12700 states and 18333 transitions. Word has length 76 [2022-11-03 02:30:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:31,133 INFO L495 AbstractCegarLoop]: Abstraction has 12700 states and 18333 transitions. [2022-11-03 02:30:31,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:31,135 INFO L276 IsEmpty]: Start isEmpty. Operand 12700 states and 18333 transitions. [2022-11-03 02:30:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:30:31,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:31,146 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-11-03 02:30:31,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:30:31,147 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:31,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1364751073, now seen corresponding path program 1 times [2022-11-03 02:30:31,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:31,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940982049] [2022-11-03 02:30:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:31,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:30:31,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:31,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940982049] [2022-11-03 02:30:31,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940982049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:31,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:31,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:30:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274306698] [2022-11-03 02:30:31,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:30:31,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:31,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:30:31,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:30:31,465 INFO L87 Difference]: Start difference. First operand 12700 states and 18333 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:34,020 INFO L93 Difference]: Finished difference Result 35860 states and 52089 transitions. [2022-11-03 02:30:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:30:34,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 78 [2022-11-03 02:30:34,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:34,159 INFO L225 Difference]: With dead ends: 35860 [2022-11-03 02:30:34,159 INFO L226 Difference]: Without dead ends: 23166 [2022-11-03 02:30:34,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:30:34,208 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 573 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:34,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 582 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:30:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23166 states. [2022-11-03 02:30:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23166 to 18788. [2022-11-03 02:30:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18788 states, 15655 states have (on average 1.4320664324496966) internal successors, (22419), 15688 states have internal predecessors, (22419), 1980 states have call successors, (1980), 976 states have call predecessors, (1980), 1152 states have return successors, (2572), 2124 states have call predecessors, (2572), 1980 states have call successors, (2572) [2022-11-03 02:30:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18788 states to 18788 states and 26971 transitions. [2022-11-03 02:30:36,850 INFO L78 Accepts]: Start accepts. Automaton has 18788 states and 26971 transitions. Word has length 78 [2022-11-03 02:30:36,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:36,850 INFO L495 AbstractCegarLoop]: Abstraction has 18788 states and 26971 transitions. [2022-11-03 02:30:36,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 18788 states and 26971 transitions. [2022-11-03 02:30:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:30:36,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:36,860 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-11-03 02:30:36,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:30:36,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:36,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1247671593, now seen corresponding path program 1 times [2022-11-03 02:30:36,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:36,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824516290] [2022-11-03 02:30:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:36,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:30:37,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:37,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824516290] [2022-11-03 02:30:37,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824516290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:37,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:37,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:30:37,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964675426] [2022-11-03 02:30:37,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:37,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:30:37,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:30:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:30:37,078 INFO L87 Difference]: Start difference. First operand 18788 states and 26971 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:39,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:39,973 INFO L93 Difference]: Finished difference Result 46656 states and 66893 transitions. [2022-11-03 02:30:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:30:39,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 80 [2022-11-03 02:30:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:40,151 INFO L225 Difference]: With dead ends: 46656 [2022-11-03 02:30:40,151 INFO L226 Difference]: Without dead ends: 27874 [2022-11-03 02:30:40,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:30:40,228 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 518 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:40,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 447 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:30:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27874 states. [2022-11-03 02:30:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27874 to 27872. [2022-11-03 02:30:42,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27872 states, 23195 states have (on average 1.4245742616943307) internal successors, (33043), 23220 states have internal predecessors, (33043), 2948 states have call successors, (2948), 1472 states have call predecessors, (2948), 1728 states have return successors, (3788), 3180 states have call predecessors, (3788), 2948 states have call successors, (3788) [2022-11-03 02:30:42,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27872 states to 27872 states and 39779 transitions. [2022-11-03 02:30:42,920 INFO L78 Accepts]: Start accepts. Automaton has 27872 states and 39779 transitions. Word has length 80 [2022-11-03 02:30:42,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:42,921 INFO L495 AbstractCegarLoop]: Abstraction has 27872 states and 39779 transitions. [2022-11-03 02:30:42,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 27872 states and 39779 transitions. [2022-11-03 02:30:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 02:30:42,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:42,935 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-11-03 02:30:42,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:30:42,935 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:42,937 INFO L85 PathProgramCache]: Analyzing trace with hash 785546593, now seen corresponding path program 1 times [2022-11-03 02:30:42,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:42,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949861162] [2022-11-03 02:30:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:42,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:30:43,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:43,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949861162] [2022-11-03 02:30:43,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949861162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:43,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:43,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:30:43,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791817200] [2022-11-03 02:30:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:43,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:30:43,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:43,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:30:43,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:30:43,301 INFO L87 Difference]: Start difference. First operand 27872 states and 39779 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:48,331 INFO L93 Difference]: Finished difference Result 74218 states and 106645 transitions. [2022-11-03 02:30:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:30:48,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 82 [2022-11-03 02:30:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:48,550 INFO L225 Difference]: With dead ends: 74218 [2022-11-03 02:30:48,551 INFO L226 Difference]: Without dead ends: 46352 [2022-11-03 02:30:48,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:30:48,620 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 523 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:48,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 537 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:30:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46352 states. [2022-11-03 02:30:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46352 to 41566. [2022-11-03 02:30:52,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41566 states, 34575 states have (on average 1.417006507592191) internal successors, (48993), 34568 states have internal predecessors, (48993), 4398 states have call successors, (4398), 2224 states have call predecessors, (4398), 2592 states have return successors, (5578), 4774 states have call predecessors, (5578), 4398 states have call successors, (5578) [2022-11-03 02:30:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41566 states to 41566 states and 58969 transitions. [2022-11-03 02:30:53,006 INFO L78 Accepts]: Start accepts. Automaton has 41566 states and 58969 transitions. Word has length 82 [2022-11-03 02:30:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:53,007 INFO L495 AbstractCegarLoop]: Abstraction has 41566 states and 58969 transitions. [2022-11-03 02:30:53,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:30:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 41566 states and 58969 transitions. [2022-11-03 02:30:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:30:53,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:53,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:30:53,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:30:53,023 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1390026839, now seen corresponding path program 1 times [2022-11-03 02:30:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:53,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936941880] [2022-11-03 02:30:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:53,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 02:30:53,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:53,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936941880] [2022-11-03 02:30:53,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936941880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:53,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:53,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:30:53,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232729906] [2022-11-03 02:30:53,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:53,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:30:53,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:53,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:30:53,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:30:53,294 INFO L87 Difference]: Start difference. First operand 41566 states and 58969 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:31:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:01,268 INFO L93 Difference]: Finished difference Result 130646 states and 186342 transitions. [2022-11-03 02:31:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:31:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 84 [2022-11-03 02:31:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:01,904 INFO L225 Difference]: With dead ends: 130646 [2022-11-03 02:31:01,904 INFO L226 Difference]: Without dead ends: 89086 [2022-11-03 02:31:02,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:31:02,029 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 524 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:02,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 406 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:31:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89086 states.