./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba --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 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e --- 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-b5237d8 [2022-11-22 02:28:14,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:28:14,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:28:14,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:28:14,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:28:14,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:28:14,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:28:14,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:28:14,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:28:14,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:28:14,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:28:14,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:28:14,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:28:14,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:28:14,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:28:14,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:28:14,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:28:14,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:28:14,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:28:14,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:28:14,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:28:14,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:28:14,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:28:14,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:28:14,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:28:14,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:28:14,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:28:14,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:28:14,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:28:14,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:28:14,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:28:14,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:28:14,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:28:14,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:28:14,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:28:14,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:28:14,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:28:14,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:28:14,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:28:14,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:28:14,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:28:14,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:28:14,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:28:14,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:28:14,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:28:14,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:28:14,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:28:14,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:28:14,901 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:28:14,902 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:28:14,902 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:28:14,902 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:28:14,902 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:28:14,903 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:28:14,903 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:28:14,903 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:28:14,903 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:28:14,904 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:28:14,904 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:28:14,904 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:28:14,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:28:14,905 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:28:14,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:28:14,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:28:14,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:28:14,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:28:14,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:28:14,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:28:14,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:28:14,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:28:14,907 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:28:14,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:28:14,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:28:14,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:28:14,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:28:14,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:28:14,909 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:28:14,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:28:14,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:28:14,910 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:28:14,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:28:14,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:28:14,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:28:14,910 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_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e [2022-11-22 02:28:15,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:28:15,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:28:15,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:28:15,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:28:15,204 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:28:15,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2022-11-22 02:28:18,302 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:28:19,123 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:28:19,123 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2022-11-22 02:28:19,194 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/data/0048f332c/7f987a0512b24ec28470e6a38baf1f9d/FLAG00b176894 [2022-11-22 02:28:19,212 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/data/0048f332c/7f987a0512b24ec28470e6a38baf1f9d [2022-11-22 02:28:19,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:28:19,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:28:19,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:28:19,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:28:19,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:28:19,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:28:19" (1/1) ... [2022-11-22 02:28:19,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3270a102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:19, skipping insertion in model container [2022-11-22 02:28:19,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:28:19" (1/1) ... [2022-11-22 02:28:19,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:28:19,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:28:21,696 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[382357,382370] [2022-11-22 02:28:21,723 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[383339,383352] [2022-11-22 02:28:22,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:28:22,098 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:28:23,337 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[382357,382370] [2022-11-22 02:28:23,340 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[383339,383352] [2022-11-22 02:28:23,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:28:23,496 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:28:23,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23 WrapperNode [2022-11-22 02:28:23,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:28:23,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:28:23,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:28:23,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:28:23,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:23,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,081 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2022-11-22 02:28:24,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:28:24,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:28:24,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:28:24,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:28:24,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,729 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:28:24,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:28:24,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:28:24,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:28:24,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (1/1) ... [2022-11-22 02:28:24,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:28:24,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:24,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:28:24,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:28:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:28:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-22 02:28:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-22 02:28:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-22 02:28:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-22 02:28:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-22 02:28:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-22 02:28:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-22 02:28:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-22 02:28:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-22 02:28:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-22 02:28:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-22 02:28:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-22 02:28:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-22 02:28:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-22 02:28:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:28:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:28:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:28:25,254 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:28:25,262 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:28:34,285 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:28:36,689 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:28:36,690 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-22 02:28:36,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:28:36 BoogieIcfgContainer [2022-11-22 02:28:36,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:28:36,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:28:36,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:28:36,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:28:36,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:28:19" (1/3) ... [2022-11-22 02:28:36,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1e9c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:28:36, skipping insertion in model container [2022-11-22 02:28:36,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:23" (2/3) ... [2022-11-22 02:28:36,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1e9c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:28:36, skipping insertion in model container [2022-11-22 02:28:36,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:28:36" (3/3) ... [2022-11-22 02:28:36,704 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.15.cil.c [2022-11-22 02:28:36,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:28:36,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 02:28:36,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:28:36,819 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;@68adf25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:28:36,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 02:28:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-22 02:28:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 02:28:36,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:36,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:36,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash 117342672, now seen corresponding path program 1 times [2022-11-22 02:28:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:36,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355561616] [2022-11-22 02:28:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:28:37,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:37,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355561616] [2022-11-22 02:28:37,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355561616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:37,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:37,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:28:37,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213378144] [2022-11-22 02:28:37,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:37,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:28:37,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:28:37,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:28:37,506 INFO L87 Difference]: Start difference. First operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:28:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:38,616 INFO L93 Difference]: Finished difference Result 3877 states and 7503 transitions. [2022-11-22 02:28:38,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:28:38,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2022-11-22 02:28:38,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:38,653 INFO L225 Difference]: With dead ends: 3877 [2022-11-22 02:28:38,653 INFO L226 Difference]: Without dead ends: 2028 [2022-11-22 02:28:38,665 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 [2022-11-22 02:28:38,670 INFO L413 NwaCegarLoop]: 3549 mSDtfsCounter, 3820 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 6994 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:38,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3820 Valid, 6994 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:28:38,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-11-22 02:28:38,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2027. [2022-11-22 02:28:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1961 states have (on average 1.9163691993880674) internal successors, (3758), 1965 states have internal predecessors, (3758), 52 states have call successors, (52), 13 states have call predecessors, (52), 12 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-22 02:28:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3860 transitions. [2022-11-22 02:28:38,873 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3860 transitions. Word has length 71 [2022-11-22 02:28:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:38,875 INFO L495 AbstractCegarLoop]: Abstraction has 2027 states and 3860 transitions. [2022-11-22 02:28:38,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:28:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3860 transitions. [2022-11-22 02:28:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:28:38,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:38,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:38,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:28:38,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1447840344, now seen corresponding path program 1 times [2022-11-22 02:28:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:38,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245211855] [2022-11-22 02:28:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:28:39,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:39,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245211855] [2022-11-22 02:28:39,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245211855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:28:39,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933709244] [2022-11-22 02:28:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:39,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:39,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:39,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:28:39,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:28:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:39,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:28:39,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:28:39,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:28:39,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933709244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:39,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:28:39,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:28:39,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064802544] [2022-11-22 02:28:39,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:39,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:28:39,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:28:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:39,767 INFO L87 Difference]: Start difference. First operand 2027 states and 3860 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:40,384 INFO L93 Difference]: Finished difference Result 2782 states and 5049 transitions. [2022-11-22 02:28:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:28:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-22 02:28:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:40,398 INFO L225 Difference]: With dead ends: 2782 [2022-11-22 02:28:40,398 INFO L226 Difference]: Without dead ends: 2401 [2022-11-22 02:28:40,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:40,401 INFO L413 NwaCegarLoop]: 3376 mSDtfsCounter, 3533 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:40,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 3624 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:28:40,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-11-22 02:28:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2395. [2022-11-22 02:28:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 2273 states have (on average 1.86229652441707) internal successors, (4233), 2278 states have internal predecessors, (4233), 96 states have call successors, (96), 25 states have call predecessors, (96), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-22 02:28:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 4423 transitions. [2022-11-22 02:28:40,522 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 4423 transitions. Word has length 144 [2022-11-22 02:28:40,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:40,523 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 4423 transitions. [2022-11-22 02:28:40,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 4423 transitions. [2022-11-22 02:28:40,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:28:40,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:40,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:40,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:28:40,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:40,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:40,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:40,752 INFO L85 PathProgramCache]: Analyzing trace with hash 461158038, now seen corresponding path program 1 times [2022-11-22 02:28:40,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:40,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215129349] [2022-11-22 02:28:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:40,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:28:41,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:41,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215129349] [2022-11-22 02:28:41,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215129349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:28:41,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677586081] [2022-11-22 02:28:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:41,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:41,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:41,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:28:41,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:28:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:41,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:28:41,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:28:41,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:28:41,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677586081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:41,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:28:41,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:28:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343190207] [2022-11-22 02:28:41,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:41,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:28:41,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:28:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:41,411 INFO L87 Difference]: Start difference. First operand 2395 states and 4423 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:41,991 INFO L93 Difference]: Finished difference Result 3880 states and 6758 transitions. [2022-11-22 02:28:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:28:41,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-22 02:28:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:42,014 INFO L225 Difference]: With dead ends: 3880 [2022-11-22 02:28:42,015 INFO L226 Difference]: Without dead ends: 3131 [2022-11-22 02:28:42,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:42,022 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3527 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:42,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:28:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-11-22 02:28:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3123. [2022-11-22 02:28:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 2891 states have (on average 1.7886544448287789) internal successors, (5171), 2898 states have internal predecessors, (5171), 182 states have call successors, (182), 49 states have call predecessors, (182), 48 states have return successors, (180), 176 states have call predecessors, (180), 180 states have call successors, (180) [2022-11-22 02:28:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5533 transitions. [2022-11-22 02:28:42,289 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5533 transitions. Word has length 144 [2022-11-22 02:28:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:42,290 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5533 transitions. [2022-11-22 02:28:42,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5533 transitions. [2022-11-22 02:28:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:28:42,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:42,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:42,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:28:42,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:42,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:42,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash -141907628, now seen corresponding path program 1 times [2022-11-22 02:28:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:42,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119188879] [2022-11-22 02:28:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:28:42,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:42,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119188879] [2022-11-22 02:28:42,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119188879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:28:42,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125658425] [2022-11-22 02:28:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:42,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:28:42,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:28:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:43,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:28:43,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-22 02:28:43,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:28:43,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125658425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:43,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:28:43,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:28:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296690103] [2022-11-22 02:28:43,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:43,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:28:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:28:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:43,067 INFO L87 Difference]: Start difference. First operand 3123 states and 5533 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:43,907 INFO L93 Difference]: Finished difference Result 6052 states and 10126 transitions. [2022-11-22 02:28:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:28:43,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-22 02:28:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:43,933 INFO L225 Difference]: With dead ends: 6052 [2022-11-22 02:28:43,933 INFO L226 Difference]: Without dead ends: 4575 [2022-11-22 02:28:43,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:43,943 INFO L413 NwaCegarLoop]: 3374 mSDtfsCounter, 3551 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:43,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3551 Valid, 3622 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:28:43,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2022-11-22 02:28:44,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4563. [2022-11-22 02:28:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4115 states have (on average 1.7066828675577157) internal successors, (7023), 4126 states have internal predecessors, (7023), 350 states have call successors, (350), 97 states have call predecessors, (350), 96 states have return successors, (348), 340 states have call predecessors, (348), 348 states have call successors, (348) [2022-11-22 02:28:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7721 transitions. [2022-11-22 02:28:44,216 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7721 transitions. Word has length 144 [2022-11-22 02:28:44,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:44,216 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 7721 transitions. [2022-11-22 02:28:44,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:44,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7721 transitions. [2022-11-22 02:28:44,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:28:44,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:44,230 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:44,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:28:44,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:44,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:44,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2126790126, now seen corresponding path program 1 times [2022-11-22 02:28:44,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:44,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913808346] [2022-11-22 02:28:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:28:44,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:44,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913808346] [2022-11-22 02:28:44,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913808346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:28:44,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916413626] [2022-11-22 02:28:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:44,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:44,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:44,731 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:28:44,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:28:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:45,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:28:45,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-22 02:28:45,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:28:45,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916413626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:45,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:28:45,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:28:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768490626] [2022-11-22 02:28:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:45,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:28:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:28:45,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:45,086 INFO L87 Difference]: Start difference. First operand 4563 states and 7721 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:45,945 INFO L93 Difference]: Finished difference Result 10348 states and 16762 transitions. [2022-11-22 02:28:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:28:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-22 02:28:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:45,990 INFO L225 Difference]: With dead ends: 10348 [2022-11-22 02:28:45,990 INFO L226 Difference]: Without dead ends: 7431 [2022-11-22 02:28:46,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:46,010 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3545 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:46,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:28:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2022-11-22 02:28:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7411. [2022-11-22 02:28:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 6539 states have (on average 1.6331243309374521) internal successors, (10679), 6558 states have internal predecessors, (10679), 678 states have call successors, (678), 193 states have call predecessors, (678), 192 states have return successors, (676), 660 states have call predecessors, (676), 676 states have call successors, (676) [2022-11-22 02:28:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 12033 transitions. [2022-11-22 02:28:46,464 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 12033 transitions. Word has length 144 [2022-11-22 02:28:46,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:46,464 INFO L495 AbstractCegarLoop]: Abstraction has 7411 states and 12033 transitions. [2022-11-22 02:28:46,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 12033 transitions. [2022-11-22 02:28:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:28:46,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:46,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:46,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:28:46,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:46,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:46,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash 149274960, now seen corresponding path program 1 times [2022-11-22 02:28:46,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:46,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325088004] [2022-11-22 02:28:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:46,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:28:47,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:47,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325088004] [2022-11-22 02:28:47,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325088004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:28:47,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095084552] [2022-11-22 02:28:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:47,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:47,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:47,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:28:47,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:28:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:47,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:28:47,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-22 02:28:47,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:28:47,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095084552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:47,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:28:47,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:28:47,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147720050] [2022-11-22 02:28:47,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:47,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:28:47,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:47,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:28:47,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:47,338 INFO L87 Difference]: Start difference. First operand 7411 states and 12033 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:48,254 INFO L93 Difference]: Finished difference Result 18844 states and 29834 transitions. [2022-11-22 02:28:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:28:48,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-22 02:28:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:48,333 INFO L225 Difference]: With dead ends: 18844 [2022-11-22 02:28:48,334 INFO L226 Difference]: Without dead ends: 13079 [2022-11-22 02:28:48,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:48,363 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3554 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3554 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:48,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3554 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:28:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13079 states. [2022-11-22 02:28:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13079 to 13043. [2022-11-22 02:28:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13043 states, 11339 states have (on average 1.578181497486551) internal successors, (17895), 11374 states have internal predecessors, (17895), 1318 states have call successors, (1318), 385 states have call predecessors, (1318), 384 states have return successors, (1316), 1284 states have call predecessors, (1316), 1316 states have call successors, (1316) [2022-11-22 02:28:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13043 states to 13043 states and 20529 transitions. [2022-11-22 02:28:49,014 INFO L78 Accepts]: Start accepts. Automaton has 13043 states and 20529 transitions. Word has length 144 [2022-11-22 02:28:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:49,015 INFO L495 AbstractCegarLoop]: Abstraction has 13043 states and 20529 transitions. [2022-11-22 02:28:49,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 13043 states and 20529 transitions. [2022-11-22 02:28:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:28:49,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:49,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:49,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:28:49,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 02:28:49,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1624508370, now seen corresponding path program 1 times [2022-11-22 02:28:49,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:49,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438785303] [2022-11-22 02:28:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:28:49,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:49,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438785303] [2022-11-22 02:28:49,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438785303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:28:49,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797979142] [2022-11-22 02:28:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:49,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:49,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:49,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:28:49,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:28:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:49,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:28:49,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 02:28:49,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:28:49,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797979142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:49,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:28:49,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:28:49,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113284752] [2022-11-22 02:28:49,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:49,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:28:49,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:49,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:28:49,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:49,833 INFO L87 Difference]: Start difference. First operand 13043 states and 20529 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:51,195 INFO L93 Difference]: Finished difference Result 35644 states and 55578 transitions. [2022-11-22 02:28:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:28:51,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-22 02:28:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:51,289 INFO L225 Difference]: With dead ends: 35644 [2022-11-22 02:28:51,289 INFO L226 Difference]: Without dead ends: 24247 [2022-11-22 02:28:51,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:51,331 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3524 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:51,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3524 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:28:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24247 states. [2022-11-22 02:28:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24247 to 24179. [2022-11-22 02:28:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24179 states, 20843 states have (on average 1.5417646212157559) internal successors, (32135), 20910 states have internal predecessors, (32135), 2566 states have call successors, (2566), 769 states have call predecessors, (2566), 768 states have return successors, (2564), 2500 states have call predecessors, (2564), 2564 states have call successors, (2564) [2022-11-22 02:28:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24179 states to 24179 states and 37265 transitions. [2022-11-22 02:28:52,407 INFO L78 Accepts]: Start accepts. Automaton has 24179 states and 37265 transitions. Word has length 144 [2022-11-22 02:28:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:52,407 INFO L495 AbstractCegarLoop]: Abstraction has 24179 states and 37265 transitions. [2022-11-22 02:28:52,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 24179 states and 37265 transitions. [2022-11-22 02:28:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:28:52,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:52,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:52,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:28:52,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:28:52,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:52,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash 888356308, now seen corresponding path program 1 times [2022-11-22 02:28:52,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:52,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149728913] [2022-11-22 02:28:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:52,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:28:52,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:52,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149728913] [2022-11-22 02:28:52,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149728913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:28:52,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731604140] [2022-11-22 02:28:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:52,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:52,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:52,873 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:28:52,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:28:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:53,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:28:53,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-22 02:28:53,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:28:53,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731604140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:53,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:28:53,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:28:53,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990837107] [2022-11-22 02:28:53,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:53,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:28:53,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:53,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:28:53,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:53,232 INFO L87 Difference]: Start difference. First operand 24179 states and 37265 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:55,540 INFO L93 Difference]: Finished difference Result 68860 states and 106266 transitions. [2022-11-22 02:28:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:28:55,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-22 02:28:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:55,756 INFO L225 Difference]: With dead ends: 68860 [2022-11-22 02:28:55,757 INFO L226 Difference]: Without dead ends: 46327 [2022-11-22 02:28:55,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:55,832 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3539 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:55,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:28:55,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46327 states. [2022-11-22 02:28:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46327 to 46195. [2022-11-22 02:28:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46195 states, 39659 states have (on average 1.5187221059532514) internal successors, (60231), 39790 states have internal predecessors, (60231), 4998 states have call successors, (4998), 1537 states have call predecessors, (4998), 1536 states have return successors, (4996), 4868 states have call predecessors, (4996), 4996 states have call successors, (4996) [2022-11-22 02:28:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46195 states to 46195 states and 70225 transitions. [2022-11-22 02:28:58,095 INFO L78 Accepts]: Start accepts. Automaton has 46195 states and 70225 transitions. Word has length 144 [2022-11-22 02:28:58,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:58,096 INFO L495 AbstractCegarLoop]: Abstraction has 46195 states and 70225 transitions. [2022-11-22 02:28:58,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:28:58,096 INFO L276 IsEmpty]: Start isEmpty. Operand 46195 states and 70225 transitions. [2022-11-22 02:28:58,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:28:58,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:58,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:58,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:28:58,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:58,369 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:58,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1189413778, now seen corresponding path program 1 times [2022-11-22 02:28:58,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:58,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069374954] [2022-11-22 02:28:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:58,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-22 02:28:59,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069374954] [2022-11-22 02:28:59,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069374954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:59,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:59,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:28:59,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290507793] [2022-11-22 02:28:59,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:59,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:28:59,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:28:59,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:59,317 INFO L87 Difference]: Start difference. First operand 46195 states and 70225 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:29:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:05,058 INFO L93 Difference]: Finished difference Result 158075 states and 238040 transitions. [2022-11-22 02:29:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:29:05,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 144 [2022-11-22 02:29:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:05,815 INFO L225 Difference]: With dead ends: 158075 [2022-11-22 02:29:05,815 INFO L226 Difference]: Without dead ends: 113527 [2022-11-22 02:29:05,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:29:05,919 INFO L413 NwaCegarLoop]: 3342 mSDtfsCounter, 4430 mSDsluCounter, 9823 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4452 SdHoareTripleChecker+Valid, 13165 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:05,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4452 Valid, 13165 Invalid, 1409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [151 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:29:06,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113527 states. [2022-11-22 02:29:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113527 to 89203. [2022-11-22 02:29:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89203 states, 76395 states have (on average 1.5038549643301262) internal successors, (114887), 76654 states have internal predecessors, (114887), 9734 states have call successors, (9734), 3073 states have call predecessors, (9734), 3072 states have return successors, (9732), 9476 states have call predecessors, (9732), 9732 states have call successors, (9732) [2022-11-22 02:29:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89203 states to 89203 states and 134353 transitions. [2022-11-22 02:29:11,222 INFO L78 Accepts]: Start accepts. Automaton has 89203 states and 134353 transitions. Word has length 144 [2022-11-22 02:29:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:11,224 INFO L495 AbstractCegarLoop]: Abstraction has 89203 states and 134353 transitions. [2022-11-22 02:29:11,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:29:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 89203 states and 134353 transitions. [2022-11-22 02:29:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-22 02:29:11,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:11,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:29:11,343 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:29:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash -275944296, now seen corresponding path program 1 times [2022-11-22 02:29:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:11,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092986757] [2022-11-22 02:29:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 02:29:12,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:12,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092986757] [2022-11-22 02:29:12,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092986757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:29:12,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575404986] [2022-11-22 02:29:12,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:12,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:29:12,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:29:12,060 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:29:12,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9212c7b7-835a-4360-badd-3e55dfbf1607/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:29:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:12,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:29:12,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:29:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-22 02:29:12,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:29:12,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575404986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:12,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:29:12,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-22 02:29:12,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674377272] [2022-11-22 02:29:12,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:12,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:29:12,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:12,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:29:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:29:12,398 INFO L87 Difference]: Start difference. First operand 89203 states and 134353 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 02:29:17,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:17,770 INFO L93 Difference]: Finished difference Result 157175 states and 240212 transitions. [2022-11-22 02:29:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:29:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 167 [2022-11-22 02:29:17,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:18,206 INFO L225 Difference]: With dead ends: 157175 [2022-11-22 02:29:18,206 INFO L226 Difference]: Without dead ends: 112371 [2022-11-22 02:29:18,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:29:18,319 INFO L413 NwaCegarLoop]: 3452 mSDtfsCounter, 134 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 6778 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:18,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 6778 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:29:18,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112371 states.