./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4ef8e9ed2cd06e3f1b2681e4efb1f48663612c7770f819d08e3f1f515d36787 --- 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-38b53e6 [2022-11-25 18:00:10,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:00:10,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:00:10,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:00:10,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:00:10,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:00:10,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:00:10,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:00:10,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:00:10,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:00:10,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:00:10,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:00:10,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:00:10,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:00:10,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:00:10,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:00:10,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:00:10,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:00:10,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:00:10,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:00:10,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:00:10,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:00:10,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:00:10,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:00:10,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:00:10,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:00:10,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:00:10,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:00:10,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:00:10,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:00:10,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:00:10,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:00:10,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:00:10,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:00:10,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:00:10,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:00:10,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:00:10,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:00:10,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:00:10,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:00:10,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:00:10,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:00:10,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:00:10,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:00:10,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:00:10,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:00:10,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:00:10,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:00:10,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:00:10,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:00:10,860 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:00:10,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:00:10,861 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:00:10,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:00:10,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:00:10,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:00:10,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:00:10,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:00:10,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:00:10,863 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:00:10,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:00:10,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:00:10,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:00:10,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:00:10,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:00:10,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:00:10,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:00:10,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:00:10,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:00:10,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:00:10,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:00:10,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:00:10,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:00:10,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:00:10,867 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:00:10,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:00:10,868 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ef8e9ed2cd06e3f1b2681e4efb1f48663612c7770f819d08e3f1f515d36787 [2022-11-25 18:00:11,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:00:11,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:00:11,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:00:11,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:00:11,192 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:00:11,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c [2022-11-25 18:00:14,400 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:00:15,258 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:00:15,259 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c [2022-11-25 18:00:15,327 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/data/40fe7d1d9/2c30fee57a734776b34e895ccb4ecc7c/FLAG6e9ad80f9 [2022-11-25 18:00:15,350 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/data/40fe7d1d9/2c30fee57a734776b34e895ccb4ecc7c [2022-11-25 18:00:15,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:00:15,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:00:15,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:00:15,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:00:15,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:00:15,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:15" (1/1) ... [2022-11-25 18:00:15,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29532295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:15, skipping insertion in model container [2022-11-25 18:00:15,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:15" (1/1) ... [2022-11-25 18:00:15,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:00:15,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:00:18,277 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_18d6d091-7db5-4c21-ab90-0f914376a1c6/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c[382357,382370] [2022-11-25 18:00:18,316 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_18d6d091-7db5-4c21-ab90-0f914376a1c6/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c[383339,383352] [2022-11-25 18:00:18,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:00:18,691 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:00:20,251 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_18d6d091-7db5-4c21-ab90-0f914376a1c6/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c[382357,382370] [2022-11-25 18:00:20,257 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_18d6d091-7db5-4c21-ab90-0f914376a1c6/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c[383339,383352] [2022-11-25 18:00:20,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:00:20,401 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:00:20,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20 WrapperNode [2022-11-25 18:00:20,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:00:20,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:00:20,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:00:20,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:00:20,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:20,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:20,975 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13202 [2022-11-25 18:00:20,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:00:20,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:00:20,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:00:20,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:00:20,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:20,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:21,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:21,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:21,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:21,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:21,511 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:21,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:21,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:00:21,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:00:21,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:00:21,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:00:21,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (1/1) ... [2022-11-25 18:00:21,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:00:21,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:21,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:00:21,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d6d091-7db5-4c21-ab90-0f914376a1c6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:00:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:00:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 18:00:21,866 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 18:00:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 18:00:21,866 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 18:00:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 18:00:21,867 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 18:00:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-25 18:00:21,867 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-25 18:00:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 18:00:21,868 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 18:00:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 18:00:21,868 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 18:00:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 18:00:21,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 18:00:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:00:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:00:21,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:00:22,197 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:00:22,215 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:00:33,741 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:00:33,819 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:00:33,820 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-25 18:00:33,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:33 BoogieIcfgContainer [2022-11-25 18:00:33,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:00:33,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:00:33,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:00:33,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:00:33,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:00:15" (1/3) ... [2022-11-25 18:00:33,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b59613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:33, skipping insertion in model container [2022-11-25 18:00:33,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:20" (2/3) ... [2022-11-25 18:00:33,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b59613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:33, skipping insertion in model container [2022-11-25 18:00:33,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:33" (3/3) ... [2022-11-25 18:00:33,846 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.14.cil.c [2022-11-25 18:00:33,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:00:33,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:00:34,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:00:34,024 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=PETRI_NET, 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;@3c7fabc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:00:34,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:00:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-25 18:00:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:00:34,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:34,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:34,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:34,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:34,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1261108038, now seen corresponding path program 1 times [2022-11-25 18:00:34,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:34,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130336262] [2022-11-25 18:00:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:34,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:34,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:34,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:00:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:00:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:35,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:00:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:00:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:35,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130336262] [2022-11-25 18:00:35,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130336262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:35,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:35,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:00:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173562763] [2022-11-25 18:00:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:35,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:00:35,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:35,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:00:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:00:35,294 INFO L87 Difference]: Start difference. First operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:00:38,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:38,927 INFO L93 Difference]: Finished difference Result 5277 states and 9684 transitions. [2022-11-25 18:00:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:00:38,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 18:00:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:38,961 INFO L225 Difference]: With dead ends: 5277 [2022-11-25 18:00:38,962 INFO L226 Difference]: Without dead ends: 2645 [2022-11-25 18:00:38,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:00:38,977 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 1048 mSDsluCounter, 12475 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 16852 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:38,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 16852 Invalid, 1097 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [60 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 18:00:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2022-11-25 18:00:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2022-11-25 18:00:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8265099310903932) internal successors, (4506), 2470 states have internal predecessors, (4506), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-25 18:00:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4560 transitions. [2022-11-25 18:00:39,359 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4560 transitions. Word has length 179 [2022-11-25 18:00:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:39,360 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4560 transitions. [2022-11-25 18:00:39,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:00:39,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4560 transitions. [2022-11-25 18:00:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:00:39,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:39,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:39,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:00:39,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1530760952, now seen corresponding path program 1 times [2022-11-25 18:00:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:39,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735625987] [2022-11-25 18:00:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:00:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:00:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:00:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:00:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:39,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:39,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735625987] [2022-11-25 18:00:39,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735625987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:39,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:39,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:00:39,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754635698] [2022-11-25 18:00:39,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:39,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:00:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:00:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:00:39,734 INFO L87 Difference]: Start difference. First operand 2503 states and 4560 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:00:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:42,627 INFO L93 Difference]: Finished difference Result 3012 states and 5382 transitions. [2022-11-25 18:00:42,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:00:42,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 18:00:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:42,643 INFO L225 Difference]: With dead ends: 3012 [2022-11-25 18:00:42,643 INFO L226 Difference]: Without dead ends: 2645 [2022-11-25 18:00:42,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:00:42,647 INFO L413 NwaCegarLoop]: 4307 mSDtfsCounter, 1034 mSDsluCounter, 12272 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 16579 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:42,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 16579 Invalid, 1096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 18:00:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2022-11-25 18:00:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2022-11-25 18:00:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8261045804620997) internal successors, (4505), 2470 states have internal predecessors, (4505), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-25 18:00:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4559 transitions. [2022-11-25 18:00:42,770 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4559 transitions. Word has length 179 [2022-11-25 18:00:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:42,772 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4559 transitions. [2022-11-25 18:00:42,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:00:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4559 transitions. [2022-11-25 18:00:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:00:42,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:42,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:00:42,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2101032758, now seen corresponding path program 1 times [2022-11-25 18:00:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:42,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514946961] [2022-11-25 18:00:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:00:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:43,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:00:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:00:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:00:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:43,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514946961] [2022-11-25 18:00:43,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514946961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:43,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:43,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:00:43,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264512814] [2022-11-25 18:00:43,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:43,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:00:43,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:43,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:00:43,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:00:43,389 INFO L87 Difference]: Start difference. First operand 2503 states and 4559 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:00:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:48,476 INFO L93 Difference]: Finished difference Result 3529 states and 6222 transitions. [2022-11-25 18:00:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:00:48,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 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 179 [2022-11-25 18:00:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:48,545 INFO L225 Difference]: With dead ends: 3529 [2022-11-25 18:00:48,548 INFO L226 Difference]: Without dead ends: 3167 [2022-11-25 18:00:48,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:00:48,551 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 5529 mSDsluCounter, 12838 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 17150 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:48,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5548 Valid, 17150 Invalid, 2495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:00:48,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2022-11-25 18:00:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2882. [2022-11-25 18:00:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.798083747338538) internal successors, (5067), 2822 states have internal predecessors, (5067), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-11-25 18:00:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5166 transitions. [2022-11-25 18:00:48,726 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5166 transitions. Word has length 179 [2022-11-25 18:00:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:48,726 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 5166 transitions. [2022-11-25 18:00:48,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:00:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5166 transitions. [2022-11-25 18:00:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:00:48,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:48,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:48,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:00:48,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash 808194758, now seen corresponding path program 1 times [2022-11-25 18:00:48,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:48,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018573322] [2022-11-25 18:00:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:48,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:00:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:00:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:00:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:00:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:49,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:49,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018573322] [2022-11-25 18:00:49,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018573322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:49,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:49,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:00:49,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279541503] [2022-11-25 18:00:49,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:49,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:00:49,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:49,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:00:49,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:00:49,226 INFO L87 Difference]: Start difference. First operand 2882 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:00:55,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:55,627 INFO L93 Difference]: Finished difference Result 4448 states and 7708 transitions. [2022-11-25 18:00:55,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:00:55,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 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 179 [2022-11-25 18:00:55,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:55,650 INFO L225 Difference]: With dead ends: 4448 [2022-11-25 18:00:55,650 INFO L226 Difference]: Without dead ends: 3707 [2022-11-25 18:00:55,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:00:55,656 INFO L413 NwaCegarLoop]: 4522 mSDtfsCounter, 5562 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5581 SdHoareTripleChecker+Valid, 22270 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:55,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5581 Valid, 22270 Invalid, 3664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 18:00:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2022-11-25 18:00:55,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3234. [2022-11-25 18:00:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3142 states have (on average 1.7743475493316359) internal successors, (5575), 3147 states have internal predecessors, (5575), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-11-25 18:00:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5718 transitions. [2022-11-25 18:00:56,013 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5718 transitions. Word has length 179 [2022-11-25 18:00:56,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:56,014 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 5718 transitions. [2022-11-25 18:00:56,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:00:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5718 transitions. [2022-11-25 18:00:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:00:56,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:56,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:56,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:00:56,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:56,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:56,024 INFO L85 PathProgramCache]: Analyzing trace with hash -961276856, now seen corresponding path program 1 times [2022-11-25 18:00:56,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:56,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325866771] [2022-11-25 18:00:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:56,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:00:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:00:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:00:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:00:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:56,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:56,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325866771] [2022-11-25 18:00:56,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325866771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:56,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:56,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:00:56,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234646277] [2022-11-25 18:00:56,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:56,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:00:56,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:56,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:00:56,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:00:56,506 INFO L87 Difference]: Start difference. First operand 3234 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:02,415 INFO L93 Difference]: Finished difference Result 5803 states and 9880 transitions. [2022-11-25 18:01:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:01:02,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 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 179 [2022-11-25 18:01:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:02,439 INFO L225 Difference]: With dead ends: 5803 [2022-11-25 18:01:02,439 INFO L226 Difference]: Without dead ends: 4710 [2022-11-25 18:01:02,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:01:02,446 INFO L413 NwaCegarLoop]: 4317 mSDtfsCounter, 5676 mSDsluCounter, 17090 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5695 SdHoareTripleChecker+Valid, 21407 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:02,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5695 Valid, 21407 Invalid, 3292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-25 18:01:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2022-11-25 18:01:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 3939. [2022-11-25 18:01:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3791 states have (on average 1.738855183328937) internal successors, (6592), 3798 states have internal predecessors, (6592), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-25 18:01:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 6827 transitions. [2022-11-25 18:01:02,910 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 6827 transitions. Word has length 179 [2022-11-25 18:01:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:02,910 INFO L495 AbstractCegarLoop]: Abstraction has 3939 states and 6827 transitions. [2022-11-25 18:01:02,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 6827 transitions. [2022-11-25 18:01:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:01:02,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:02,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:02,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:01:02,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:02,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1572545914, now seen corresponding path program 1 times [2022-11-25 18:01:02,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:02,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554828376] [2022-11-25 18:01:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:01:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:01:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:01:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:01:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:01:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:03,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:01:03,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554828376] [2022-11-25 18:01:03,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554828376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:01:03,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:01:03,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:01:03,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235363480] [2022-11-25 18:01:03,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:01:03,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:01:03,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:03,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:01:03,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:01:03,327 INFO L87 Difference]: Start difference. First operand 3939 states and 6827 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:09,559 INFO L93 Difference]: Finished difference Result 8408 states and 14029 transitions. [2022-11-25 18:01:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:01:09,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 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 179 [2022-11-25 18:01:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:09,592 INFO L225 Difference]: With dead ends: 8408 [2022-11-25 18:01:09,593 INFO L226 Difference]: Without dead ends: 6610 [2022-11-25 18:01:09,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:01:09,602 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5560 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5579 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:09,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5579 Valid, 22268 Invalid, 3655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 18:01:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2022-11-25 18:01:10,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 5350. [2022-11-25 18:01:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5090 states have (on average 1.694695481335953) internal successors, (8626), 5101 states have internal predecessors, (8626), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-11-25 18:01:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 9051 transitions. [2022-11-25 18:01:10,211 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 9051 transitions. Word has length 179 [2022-11-25 18:01:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:10,211 INFO L495 AbstractCegarLoop]: Abstraction has 5350 states and 9051 transitions. [2022-11-25 18:01:10,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 9051 transitions. [2022-11-25 18:01:10,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:01:10,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:10,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:10,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:01:10,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:10,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:10,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1317229704, now seen corresponding path program 1 times [2022-11-25 18:01:10,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:10,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029807779] [2022-11-25 18:01:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:10,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:01:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:10,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:01:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:10,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:01:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:01:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:10,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:01:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:10,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:01:10,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029807779] [2022-11-25 18:01:10,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029807779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:01:10,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:01:10,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:01:10,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449767512] [2022-11-25 18:01:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:01:10,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:01:10,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:01:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:01:10,643 INFO L87 Difference]: Start difference. First operand 5350 states and 9051 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:17,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:17,678 INFO L93 Difference]: Finished difference Result 13610 states and 22331 transitions. [2022-11-25 18:01:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:01:17,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 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 179 [2022-11-25 18:01:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:17,724 INFO L225 Difference]: With dead ends: 13610 [2022-11-25 18:01:17,724 INFO L226 Difference]: Without dead ends: 10401 [2022-11-25 18:01:17,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:01:17,739 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5556 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:17,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 22268 Invalid, 3627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 18:01:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2022-11-25 18:01:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 8186. [2022-11-25 18:01:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 7702 states have (on average 1.6512594131394442) internal successors, (12718), 7721 states have internal predecessors, (12718), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-11-25 18:01:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 13541 transitions. [2022-11-25 18:01:19,027 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 13541 transitions. Word has length 179 [2022-11-25 18:01:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:19,028 INFO L495 AbstractCegarLoop]: Abstraction has 8186 states and 13541 transitions. [2022-11-25 18:01:19,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 13541 transitions. [2022-11-25 18:01:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:01:19,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:19,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:19,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:01:19,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:19,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1531156726, now seen corresponding path program 1 times [2022-11-25 18:01:19,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:19,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034886810] [2022-11-25 18:01:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:19,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:01:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:19,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:01:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:01:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:01:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:19,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:01:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:01:19,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034886810] [2022-11-25 18:01:19,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034886810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:01:19,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:01:19,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:01:19,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937815357] [2022-11-25 18:01:19,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:01:19,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:01:19,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:01:19,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:01:19,445 INFO L87 Difference]: Start difference. First operand 8186 states and 13541 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:27,355 INFO L93 Difference]: Finished difference Result 24032 states and 39027 transitions. [2022-11-25 18:01:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:01:27,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 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 179 [2022-11-25 18:01:27,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:27,436 INFO L225 Difference]: With dead ends: 24032 [2022-11-25 18:01:27,436 INFO L226 Difference]: Without dead ends: 17987 [2022-11-25 18:01:27,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:01:27,461 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5555 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5574 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:27,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5574 Valid, 22268 Invalid, 3614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 18:01:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2022-11-25 18:01:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 13871. [2022-11-25 18:01:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6168173738310534) internal successors, (20920), 12974 states have internal predecessors, (20920), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-25 18:01:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22593 transitions. [2022-11-25 18:01:29,522 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22593 transitions. Word has length 179 [2022-11-25 18:01:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:29,523 INFO L495 AbstractCegarLoop]: Abstraction has 13871 states and 22593 transitions. [2022-11-25 18:01:29,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22593 transitions. [2022-11-25 18:01:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:01:29,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:29,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:29,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:01:29,535 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1840643144, now seen corresponding path program 1 times [2022-11-25 18:01:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:29,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568415600] [2022-11-25 18:01:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:29,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:01:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:01:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:01:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:01:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:01:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:01:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568415600] [2022-11-25 18:01:29,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568415600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:01:29,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:01:29,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:01:29,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209526812] [2022-11-25 18:01:29,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:01:29,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:01:29,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:29,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:01:29,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:01:29,946 INFO L87 Difference]: Start difference. First operand 13871 states and 22593 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:35,906 INFO L93 Difference]: Finished difference Result 29968 states and 48786 transitions. [2022-11-25 18:01:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:01:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 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 179 [2022-11-25 18:01:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:35,985 INFO L225 Difference]: With dead ends: 29968 [2022-11-25 18:01:35,985 INFO L226 Difference]: Without dead ends: 18238 [2022-11-25 18:01:36,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:01:36,035 INFO L413 NwaCegarLoop]: 4262 mSDtfsCounter, 5108 mSDsluCounter, 16780 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5128 SdHoareTripleChecker+Valid, 21042 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:36,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5128 Valid, 21042 Invalid, 1882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 18:01:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2022-11-25 18:01:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 13871. [2022-11-25 18:01:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6142669448952778) internal successors, (20887), 12974 states have internal predecessors, (20887), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-25 18:01:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22560 transitions. [2022-11-25 18:01:38,095 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22560 transitions. Word has length 179 [2022-11-25 18:01:38,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:38,096 INFO L495 AbstractCegarLoop]: Abstraction has 13871 states and 22560 transitions. [2022-11-25 18:01:38,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22560 transitions. [2022-11-25 18:01:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:01:38,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:38,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:38,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:01:38,111 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:38,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:38,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2068461750, now seen corresponding path program 1 times [2022-11-25 18:01:38,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:38,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29543245] [2022-11-25 18:01:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:38,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:38,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:01:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:01:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:38,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:01:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:01:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:01:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:38,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:01:38,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29543245] [2022-11-25 18:01:38,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29543245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:01:38,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:01:38,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:01:38,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702672575] [2022-11-25 18:01:38,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:01:38,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:01:38,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:01:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:01:38,545 INFO L87 Difference]: Start difference. First operand 13871 states and 22560 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:49,105 INFO L93 Difference]: Finished difference Result 44841 states and 72377 transitions. [2022-11-25 18:01:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:01:49,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 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 179 [2022-11-25 18:01:49,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:49,255 INFO L225 Difference]: With dead ends: 44841 [2022-11-25 18:01:49,256 INFO L226 Difference]: Without dead ends: 33111 [2022-11-25 18:01:49,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:01:49,435 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5547 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5566 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:49,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5566 Valid, 22268 Invalid, 3576 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 18:01:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33111 states. [2022-11-25 18:01:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33111 to 25305. [2022-11-25 18:01:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25305 states, 23477 states have (on average 1.5904502278826085) internal successors, (37339), 23544 states have internal predecessors, (37339), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-11-25 18:01:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25305 states to 25305 states and 40874 transitions. [2022-11-25 18:01:53,217 INFO L78 Accepts]: Start accepts. Automaton has 25305 states and 40874 transitions. Word has length 179 [2022-11-25 18:01:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:53,217 INFO L495 AbstractCegarLoop]: Abstraction has 25305 states and 40874 transitions. [2022-11-25 18:01:53,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:01:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 25305 states and 40874 transitions. [2022-11-25 18:01:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:01:53,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:53,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:53,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:01:53,237 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:53,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1961858056, now seen corresponding path program 1 times [2022-11-25 18:01:53,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:53,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478704225] [2022-11-25 18:01:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:53,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:01:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:53,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:01:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:53,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:01:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:53,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:01:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:01:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:53,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:01:53,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478704225] [2022-11-25 18:01:53,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478704225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:01:53,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:01:53,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:01:53,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140610913] [2022-11-25 18:01:53,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:01:53,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:01:53,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:53,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:01:53,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:01:53,581 INFO L87 Difference]: Start difference. First operand 25305 states and 40874 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:02:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:02:10,027 INFO L93 Difference]: Finished difference Result 86529 states and 139953 transitions. [2022-11-25 18:02:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:02:10,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 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 179 [2022-11-25 18:02:10,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:02:10,351 INFO L225 Difference]: With dead ends: 86529 [2022-11-25 18:02:10,351 INFO L226 Difference]: Without dead ends: 63365 [2022-11-25 18:02:10,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:02:10,448 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5546 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5565 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:02:10,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5565 Valid, 22268 Invalid, 3563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-25 18:02:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63365 states. [2022-11-25 18:02:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63365 to 48234. [2022-11-25 18:02:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48234 states, 44614 states have (on average 1.5764782355314475) internal successors, (70333), 44745 states have internal predecessors, (70333), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-11-25 18:02:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48234 states to 48234 states and 78078 transitions. [2022-11-25 18:02:18,745 INFO L78 Accepts]: Start accepts. Automaton has 48234 states and 78078 transitions. Word has length 179 [2022-11-25 18:02:18,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:02:18,745 INFO L495 AbstractCegarLoop]: Abstraction has 48234 states and 78078 transitions. [2022-11-25 18:02:18,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:02:18,746 INFO L276 IsEmpty]: Start isEmpty. Operand 48234 states and 78078 transitions. [2022-11-25 18:02:18,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:02:18,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:02:18,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:02:18,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:02:18,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:02:18,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:02:18,782 INFO L85 PathProgramCache]: Analyzing trace with hash -401983606, now seen corresponding path program 1 times [2022-11-25 18:02:18,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:02:18,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141748832] [2022-11-25 18:02:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:02:18,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:02:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:02:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:02:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:02:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 18:02:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:02:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 18:02:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:02:19,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:02:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:02:19,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 18:02:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:02:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:02:19,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:02:19,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141748832] [2022-11-25 18:02:19,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141748832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:02:19,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:02:19,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:02:19,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766579700] [2022-11-25 18:02:19,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:02:19,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:02:19,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:02:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:02:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:02:19,151 INFO L87 Difference]: Start difference. First operand 48234 states and 78078 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)