./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8 --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 06a966cd103a9c61c8e9ebcc5255a2d5a7d1dd56b172674853cec63a372f0a43 --- 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-2329fc7 [2022-12-13 21:02:26,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:02:26,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:02:26,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:02:26,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:02:26,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:02:26,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:02:26,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:02:26,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:02:26,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:02:26,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:02:26,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:02:26,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:02:26,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:02:26,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:02:27,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:02:27,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:02:27,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:02:27,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:02:27,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:02:27,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:02:27,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:02:27,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:02:27,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:02:27,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:02:27,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:02:27,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:02:27,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:02:27,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:02:27,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:02:27,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:02:27,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:02:27,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:02:27,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:02:27,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:02:27,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:02:27,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:02:27,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:02:27,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:02:27,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:02:27,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:02:27,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:02:27,030 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:02:27,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:02:27,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:02:27,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:02:27,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:02:27,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:02:27,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:02:27,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:02:27,032 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:02:27,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:02:27,032 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:02:27,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:02:27,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:02:27,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:02:27,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:02:27,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:02:27,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:02:27,033 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:02:27,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:02:27,033 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:02:27,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:02:27,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:02:27,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:02:27,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:02:27,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:02:27,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:02:27,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:02:27,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:02:27,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:02:27,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:02:27,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:02:27,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:02:27,035 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:02:27,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:02:27,035 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:02:27,035 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_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06a966cd103a9c61c8e9ebcc5255a2d5a7d1dd56b172674853cec63a372f0a43 [2022-12-13 21:02:27,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:02:27,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:02:27,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:02:27,216 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:02:27,216 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:02:27,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c [2022-12-13 21:02:29,811 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:02:30,235 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:02:30,235 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c [2022-12-13 21:02:30,265 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/data/49fa42937/85f1ea6acd5a4688981cdd2a13c9707b/FLAG5a833a3da [2022-12-13 21:02:30,279 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/data/49fa42937/85f1ea6acd5a4688981cdd2a13c9707b [2022-12-13 21:02:30,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:02:30,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:02:30,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:02:30,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:02:30,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:02:30,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:02:30" (1/1) ... [2022-12-13 21:02:30,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343d80dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:30, skipping insertion in model container [2022-12-13 21:02:30,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:02:30" (1/1) ... [2022-12-13 21:02:30,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:02:30,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:02:31,870 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_86bd0122-7941-4fde-9316-c6c096f3acba/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c[375709,375722] [2022-12-13 21:02:31,894 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_86bd0122-7941-4fde-9316-c6c096f3acba/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c[383339,383352] [2022-12-13 21:02:32,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:02:32,100 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:02:32,883 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_86bd0122-7941-4fde-9316-c6c096f3acba/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c[375709,375722] [2022-12-13 21:02:32,890 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_86bd0122-7941-4fde-9316-c6c096f3acba/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c[383339,383352] [2022-12-13 21:02:32,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:02:32,935 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:02:32,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32 WrapperNode [2022-12-13 21:02:32,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:02:32,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:02:32,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:02:32,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:02:32,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:32,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,287 INFO L138 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2022-12-13 21:02:33,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:02:33,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:02:33,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:02:33,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:02:33,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,501 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:02:33,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:02:33,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:02:33,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:02:33,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (1/1) ... [2022-12-13 21:02:33,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:02:33,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:02:33,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:02:33,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bd0122-7941-4fde-9316-c6c096f3acba/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:02:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:02:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 21:02:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 21:02:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 21:02:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 21:02:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 21:02:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 21:02:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 21:02:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 21:02:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 21:02:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 21:02:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 21:02:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 21:02:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:02:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:02:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:02:33,715 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:02:33,717 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:02:39,104 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:02:39,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:02:39,121 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-12-13 21:02:39,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:02:39 BoogieIcfgContainer [2022-12-13 21:02:39,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:02:39,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:02:39,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:02:39,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:02:39,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:02:30" (1/3) ... [2022-12-13 21:02:39,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c028ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:02:39, skipping insertion in model container [2022-12-13 21:02:39,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:02:32" (2/3) ... [2022-12-13 21:02:39,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c028ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:02:39, skipping insertion in model container [2022-12-13 21:02:39,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:02:39" (3/3) ... [2022-12-13 21:02:39,130 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.08.cil-1.c [2022-12-13 21:02:39,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:02:39,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 21:02:39,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:02:39,228 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;@32e69bec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:02:39,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 21:02:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 21:02:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:02:39,249 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:02:39,249 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] [2022-12-13 21:02:39,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:02:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:02:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2022-12-13 21:02:39,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:02:39,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738416385] [2022-12-13 21:02:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:02:39,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:02:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:02:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:02:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:02:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:39,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:02:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:39,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:02:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:02:39,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:02:39,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738416385] [2022-12-13 21:02:39,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738416385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:02:39,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:02:39,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:02:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934609791] [2022-12-13 21:02:39,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:02:39,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:02:39,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:02:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:02:39,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:02:39,616 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:40,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:02:40,909 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2022-12-13 21:02:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:02:40,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:02:40,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:02:40,928 INFO L225 Difference]: With dead ends: 5022 [2022-12-13 21:02:40,928 INFO L226 Difference]: Without dead ends: 2496 [2022-12-13 21:02:40,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:02:40,937 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 738 mSDsluCounter, 12361 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 16643 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:02:40,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 16643 Invalid, 776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 21:02:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-12-13 21:02:41,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2022-12-13 21:02:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 21:02:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2022-12-13 21:02:41,037 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2022-12-13 21:02:41,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:02:41,037 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2022-12-13 21:02:41,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2022-12-13 21:02:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:02:41,040 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:02:41,040 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] [2022-12-13 21:02:41,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:02:41,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:02:41,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:02:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2022-12-13 21:02:41,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:02:41,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299503138] [2022-12-13 21:02:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:02:41,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:02:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:02:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:41,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:02:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:02:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:02:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:02:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:02:41,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:02:41,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299503138] [2022-12-13 21:02:41,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299503138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:02:41,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:02:41,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:02:41,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024459234] [2022-12-13 21:02:41,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:02:41,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:02:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:02:41,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:02:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:02:41,276 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:43,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:02:43,194 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2022-12-13 21:02:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:02:43,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:02:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:02:43,205 INFO L225 Difference]: With dead ends: 3126 [2022-12-13 21:02:43,205 INFO L226 Difference]: Without dead ends: 2865 [2022-12-13 21:02:43,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:02:43,208 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 5058 mSDsluCounter, 12566 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5073 SdHoareTripleChecker+Valid, 16784 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:02:43,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5073 Valid, 16784 Invalid, 1771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 21:02:43,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-12-13 21:02:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2022-12-13 21:02:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-12-13 21:02:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2022-12-13 21:02:43,313 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2022-12-13 21:02:43,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:02:43,314 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2022-12-13 21:02:43,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2022-12-13 21:02:43,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:02:43,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:02:43,317 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] [2022-12-13 21:02:43,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:02:43,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:02:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:02:43,318 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2022-12-13 21:02:43,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:02:43,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398114815] [2022-12-13 21:02:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:02:43,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:02:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:02:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:02:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:43,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:02:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:43,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:02:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:02:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:02:43,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:02:43,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398114815] [2022-12-13 21:02:43,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398114815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:02:43,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:02:43,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:02:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089709119] [2022-12-13 21:02:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:02:43,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:02:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:02:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:02:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:02:43,544 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:02:45,612 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2022-12-13 21:02:45,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:02:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:02:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:02:45,622 INFO L225 Difference]: With dead ends: 3779 [2022-12-13 21:02:45,622 INFO L226 Difference]: Without dead ends: 3246 [2022-12-13 21:02:45,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:02:45,624 INFO L413 NwaCegarLoop]: 4365 mSDtfsCounter, 5077 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5092 SdHoareTripleChecker+Valid, 21557 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:02:45,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5092 Valid, 21557 Invalid, 2586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 21:02:45,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2022-12-13 21:02:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2022-12-13 21:02:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.789103690685413) internal successors, (5090), 2849 states have internal predecessors, (5090), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-12-13 21:02:45,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2022-12-13 21:02:45,699 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2022-12-13 21:02:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:02:45,699 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2022-12-13 21:02:45,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2022-12-13 21:02:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:02:45,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:02:45,701 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] [2022-12-13 21:02:45,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:02:45,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:02:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:02:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2022-12-13 21:02:45,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:02:45,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193629217] [2022-12-13 21:02:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:02:45,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:02:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:02:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:45,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:02:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:02:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:02:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:02:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:02:45,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:02:45,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193629217] [2022-12-13 21:02:45,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193629217] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:02:45,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:02:45,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:02:45,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972550297] [2022-12-13 21:02:45,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:02:45,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:02:45,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:02:45,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:02:45,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:02:45,876 INFO L87 Difference]: Start difference. First operand 2923 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:02:47,864 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2022-12-13 21:02:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:02:47,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:02:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:02:47,874 INFO L225 Difference]: With dead ends: 4741 [2022-12-13 21:02:47,874 INFO L226 Difference]: Without dead ends: 3955 [2022-12-13 21:02:47,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:02:47,878 INFO L413 NwaCegarLoop]: 4223 mSDtfsCounter, 5157 mSDsluCounter, 16738 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 20961 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:02:47,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 20961 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 21:02:47,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-12-13 21:02:48,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2022-12-13 21:02:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3304 states have (on average 1.7551452784503632) internal successors, (5799), 3310 states have internal predecessors, (5799), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-12-13 21:02:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2022-12-13 21:02:48,040 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2022-12-13 21:02:48,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:02:48,041 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2022-12-13 21:02:48,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:48,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2022-12-13 21:02:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:02:48,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:02:48,043 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] [2022-12-13 21:02:48,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:02:48,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:02:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:02:48,043 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2022-12-13 21:02:48,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:02:48,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217320174] [2022-12-13 21:02:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:02:48,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:02:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:48,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:02:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:02:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:02:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:02:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:02:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:02:48,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:02:48,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217320174] [2022-12-13 21:02:48,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217320174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:02:48,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:02:48,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:02:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931998746] [2022-12-13 21:02:48,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:02:48,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:02:48,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:02:48,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:02:48,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:02:48,204 INFO L87 Difference]: Start difference. First operand 3430 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:02:50,494 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2022-12-13 21:02:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:02:50,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:02:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:02:50,507 INFO L225 Difference]: With dead ends: 6592 [2022-12-13 21:02:50,507 INFO L226 Difference]: Without dead ends: 5299 [2022-12-13 21:02:50,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:02:50,512 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5075 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5090 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:02:50,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5090 Valid, 21555 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 21:02:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2022-12-13 21:02:50,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2022-12-13 21:02:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4223 states have (on average 1.7089746625621596) internal successors, (7217), 4233 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-12-13 21:02:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2022-12-13 21:02:50,713 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2022-12-13 21:02:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:02:50,713 INFO L495 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2022-12-13 21:02:50,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2022-12-13 21:02:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:02:50,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:02:50,715 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] [2022-12-13 21:02:50,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:02:50,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:02:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:02:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2022-12-13 21:02:50,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:02:50,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133812304] [2022-12-13 21:02:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:02:50,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:02:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:50,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:02:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:02:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:50,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:02:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:02:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:02:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:02:50,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:02:50,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133812304] [2022-12-13 21:02:50,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133812304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:02:50,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:02:50,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:02:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179419511] [2022-12-13 21:02:50,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:02:50,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:02:50,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:02:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:02:50,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:02:50,865 INFO L87 Difference]: Start difference. First operand 4445 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:02:53,042 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2022-12-13 21:02:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:02:53,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:02:53,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:02:53,060 INFO L225 Difference]: With dead ends: 10286 [2022-12-13 21:02:53,060 INFO L226 Difference]: Without dead ends: 7978 [2022-12-13 21:02:53,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:02:53,065 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5071 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5086 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:02:53,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5086 Valid, 21555 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 21:02:53,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2022-12-13 21:02:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2022-12-13 21:02:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 6075 states have (on average 1.6587654320987655) internal successors, (10077), 6093 states have internal predecessors, (10077), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-12-13 21:02:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2022-12-13 21:02:53,375 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2022-12-13 21:02:53,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:02:53,375 INFO L495 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2022-12-13 21:02:53,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2022-12-13 21:02:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:02:53,378 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:02:53,378 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] [2022-12-13 21:02:53,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:02:53,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:02:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:02:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2022-12-13 21:02:53,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:02:53,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673780792] [2022-12-13 21:02:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:02:53,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:02:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:02:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:02:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:02:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:02:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:02:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:02:53,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:02:53,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673780792] [2022-12-13 21:02:53,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673780792] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:02:53,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:02:53,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:02:53,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551602229] [2022-12-13 21:02:53,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:02:53,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:02:53,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:02:53,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:02:53,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:02:53,520 INFO L87 Difference]: Start difference. First operand 6489 states and 10762 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:02:56,456 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2022-12-13 21:02:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:02:56,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:02:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:02:56,501 INFO L225 Difference]: With dead ends: 17692 [2022-12-13 21:02:56,502 INFO L226 Difference]: Without dead ends: 13340 [2022-12-13 21:02:56,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:02:56,511 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5070 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5085 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:02:56,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5085 Valid, 21555 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 21:02:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2022-12-13 21:02:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2022-12-13 21:02:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.615093954248366) internal successors, (15815), 9826 states have internal predecessors, (15815), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-12-13 21:02:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2022-12-13 21:02:57,165 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2022-12-13 21:02:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:02:57,166 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2022-12-13 21:02:57,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:57,166 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2022-12-13 21:02:57,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:02:57,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:02:57,170 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] [2022-12-13 21:02:57,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:02:57,170 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:02:57,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:02:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2022-12-13 21:02:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:02:57,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923801238] [2022-12-13 21:02:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:02:57,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:02:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:02:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:02:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:02:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:02:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:02:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:02:57,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:02:57,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923801238] [2022-12-13 21:02:57,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923801238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:02:57,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:02:57,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:02:57,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841279940] [2022-12-13 21:02:57,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:02:57,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:02:57,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:02:57,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:02:57,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:02:57,292 INFO L87 Difference]: Start difference. First operand 10590 states and 17222 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:02:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:02:59,354 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2022-12-13 21:02:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:02:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:02:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:02:59,387 INFO L225 Difference]: With dead ends: 21934 [2022-12-13 21:02:59,387 INFO L226 Difference]: Without dead ends: 13481 [2022-12-13 21:02:59,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:02:59,405 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4771 mSDsluCounter, 16507 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 20683 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:02:59,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4787 Valid, 20683 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 21:02:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2022-12-13 21:03:00,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2022-12-13 21:03:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6117238562091503) internal successors, (15782), 9826 states have internal predecessors, (15782), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-12-13 21:03:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2022-12-13 21:03:00,133 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2022-12-13 21:03:00,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:03:00,133 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2022-12-13 21:03:00,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:03:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2022-12-13 21:03:00,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:03:00,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:03:00,137 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] [2022-12-13 21:03:00,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:03:00,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:03:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2022-12-13 21:03:00,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:00,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250228461] [2022-12-13 21:03:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:00,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:00,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:03:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:03:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:00,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:03:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:00,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:03:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:03:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:00,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:00,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250228461] [2022-12-13 21:03:00,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250228461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:00,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:00,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:03:00,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166988117] [2022-12-13 21:03:00,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:00,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:03:00,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:00,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:03:00,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:03:00,261 INFO L87 Difference]: Start difference. First operand 10590 states and 17189 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:03:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:04,327 INFO L93 Difference]: Finished difference Result 32469 states and 51948 transitions. [2022-12-13 21:03:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:03:04,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:03:04,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:03:04,375 INFO L225 Difference]: With dead ends: 32469 [2022-12-13 21:03:04,376 INFO L226 Difference]: Without dead ends: 24016 [2022-12-13 21:03:04,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:03:04,396 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5062 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5077 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:03:04,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5077 Valid, 21555 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 21:03:04,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2022-12-13 21:03:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 18856. [2022-12-13 21:03:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18856 states, 17290 states have (on average 1.5792943898207057) internal successors, (27306), 17356 states have internal predecessors, (27306), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-12-13 21:03:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18856 states to 18856 states and 30319 transitions. [2022-12-13 21:03:05,794 INFO L78 Accepts]: Start accepts. Automaton has 18856 states and 30319 transitions. Word has length 134 [2022-12-13 21:03:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:03:05,795 INFO L495 AbstractCegarLoop]: Abstraction has 18856 states and 30319 transitions. [2022-12-13 21:03:05,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:03:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 18856 states and 30319 transitions. [2022-12-13 21:03:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:03:05,801 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:03:05,801 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] [2022-12-13 21:03:05,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:03:05,802 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:03:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2022-12-13 21:03:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:05,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325529567] [2022-12-13 21:03:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:05,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:05,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:03:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:03:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:03:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:05,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:03:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:03:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:05,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:05,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325529567] [2022-12-13 21:03:05,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325529567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:05,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:05,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:03:05,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502308477] [2022-12-13 21:03:05,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:05,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:03:05,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:03:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:03:05,991 INFO L87 Difference]: Start difference. First operand 18856 states and 30319 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:03:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:14,121 INFO L93 Difference]: Finished difference Result 69837 states and 111398 transitions. [2022-12-13 21:03:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:03:14,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:03:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:03:14,253 INFO L225 Difference]: With dead ends: 69837 [2022-12-13 21:03:14,253 INFO L226 Difference]: Without dead ends: 53118 [2022-12-13 21:03:14,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:03:14,296 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 5391 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5415 SdHoareTripleChecker+Valid, 21545 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:03:14,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5415 Valid, 21545 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 21:03:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2022-12-13 21:03:17,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 35257. [2022-12-13 21:03:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35257 states, 32219 states have (on average 1.5616872032030789) internal successors, (50316), 32349 states have internal predecessors, (50316), 2134 states have call successors, (2134), 774 states have call predecessors, (2134), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2022-12-13 21:03:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35257 states to 35257 states and 56899 transitions. [2022-12-13 21:03:17,496 INFO L78 Accepts]: Start accepts. Automaton has 35257 states and 56899 transitions. Word has length 134 [2022-12-13 21:03:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:03:17,496 INFO L495 AbstractCegarLoop]: Abstraction has 35257 states and 56899 transitions. [2022-12-13 21:03:17,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:03:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 35257 states and 56899 transitions. [2022-12-13 21:03:17,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:03:17,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:03:17,508 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] [2022-12-13 21:03:17,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:03:17,509 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:03:17,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:17,509 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2022-12-13 21:03:17,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:17,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643245814] [2022-12-13 21:03:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:03:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:03:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:17,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:03:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:03:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:17,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:03:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:17,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:17,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643245814] [2022-12-13 21:03:17,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643245814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:17,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:17,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:03:17,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128187893] [2022-12-13 21:03:17,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:17,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:03:17,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:03:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:03:17,645 INFO L87 Difference]: Start difference. First operand 35257 states and 56899 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:03:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:32,694 INFO L93 Difference]: Finished difference Result 134716 states and 217164 transitions. [2022-12-13 21:03:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:03:32,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:03:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:03:32,969 INFO L225 Difference]: With dead ends: 134716 [2022-12-13 21:03:32,969 INFO L226 Difference]: Without dead ends: 101596 [2022-12-13 21:03:33,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:03:33,045 INFO L413 NwaCegarLoop]: 4231 mSDtfsCounter, 5200 mSDsluCounter, 16758 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5214 SdHoareTripleChecker+Valid, 20989 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:03:33,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5214 Valid, 20989 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 21:03:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101596 states. [2022-12-13 21:03:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101596 to 67354. [2022-12-13 21:03:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67354 states, 61436 states have (on average 1.5524122664235953) internal successors, (95374), 61694 states have internal predecessors, (95374), 4118 states have call successors, (4118), 1542 states have call predecessors, (4118), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2022-12-13 21:03:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67354 states to 67354 states and 110427 transitions. [2022-12-13 21:03:39,456 INFO L78 Accepts]: Start accepts. Automaton has 67354 states and 110427 transitions. Word has length 134 [2022-12-13 21:03:39,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:03:39,456 INFO L495 AbstractCegarLoop]: Abstraction has 67354 states and 110427 transitions. [2022-12-13 21:03:39,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:03:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 67354 states and 110427 transitions. [2022-12-13 21:03:39,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:03:39,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:03:39,478 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] [2022-12-13 21:03:39,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:03:39,478 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:03:39,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:39,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2022-12-13 21:03:39,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:39,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691467395] [2022-12-13 21:03:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:39,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:03:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:39,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:03:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:39,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:03:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:03:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:39,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:03:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:39,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:39,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691467395] [2022-12-13 21:03:39,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691467395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:39,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:39,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:03:39,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490766719] [2022-12-13 21:03:39,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:39,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:03:39,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:39,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:03:39,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:03:39,608 INFO L87 Difference]: Start difference. First operand 67354 states and 110427 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:04:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:04:08,080 INFO L93 Difference]: Finished difference Result 260187 states and 427554 transitions. [2022-12-13 21:04:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:04:08,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:04:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:04:08,719 INFO L225 Difference]: With dead ends: 260187 [2022-12-13 21:04:08,719 INFO L226 Difference]: Without dead ends: 194970 [2022-12-13 21:04:08,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:04:08,913 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 5317 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 21545 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:04:08,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5341 Valid, 21545 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 21:04:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194970 states. [2022-12-13 21:04:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194970 to 132059. [2022-12-13 21:04:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132059 states, 120509 states have (on average 1.5487639927308334) internal successors, (186640), 121023 states have internal predecessors, (186640), 7958 states have call successors, (7958), 3078 states have call predecessors, (7958), 3590 states have return successors, (28153), 8469 states have call predecessors, (28153), 7958 states have call successors, (28153) [2022-12-13 21:04:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132059 states to 132059 states and 222751 transitions. [2022-12-13 21:04:22,828 INFO L78 Accepts]: Start accepts. Automaton has 132059 states and 222751 transitions. Word has length 134 [2022-12-13 21:04:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:04:22,829 INFO L495 AbstractCegarLoop]: Abstraction has 132059 states and 222751 transitions. [2022-12-13 21:04:22,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:04:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 132059 states and 222751 transitions. [2022-12-13 21:04:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:04:22,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:04:22,873 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] [2022-12-13 21:04:22,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:04:22,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:04:22,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:04:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1883670420, now seen corresponding path program 1 times [2022-12-13 21:04:22,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:04:22,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759906705] [2022-12-13 21:04:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:04:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:04:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:04:23,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:04:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:04:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:04:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:04:23,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:04:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:04:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:04:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:04:23,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:04:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:04:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:04:23,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:04:23,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759906705] [2022-12-13 21:04:23,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759906705] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:04:23,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:04:23,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:04:23,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833788935] [2022-12-13 21:04:23,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:04:23,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:04:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:04:23,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:04:23,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:04:23,091 INFO L87 Difference]: Start difference. First operand 132059 states and 222751 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:05:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:05:17,547 INFO L93 Difference]: Finished difference Result 500376 states and 849828 transitions. [2022-12-13 21:05:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:05:17,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:05:17,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:05:18,922 INFO L225 Difference]: With dead ends: 500376 [2022-12-13 21:05:18,923 INFO L226 Difference]: Without dead ends: 370454 [2022-12-13 21:05:19,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:05:19,364 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 5103 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5117 SdHoareTripleChecker+Valid, 21545 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:05:19,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5117 Valid, 21545 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 21:05:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370454 states. [2022-12-13 21:05:48,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370454 to 261725. [2022-12-13 21:05:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261725 states, 239167 states have (on average 1.5489260642145446) internal successors, (370452), 240193 states have internal predecessors, (370452), 15382 states have call successors, (15382), 6150 states have call predecessors, (15382), 7174 states have return successors, (75455), 16405 states have call predecessors, (75455), 15382 states have call successors, (75455) [2022-12-13 21:05:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261725 states to 261725 states and 461289 transitions. [2022-12-13 21:05:49,617 INFO L78 Accepts]: Start accepts. Automaton has 261725 states and 461289 transitions. Word has length 134 [2022-12-13 21:05:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:05:49,618 INFO L495 AbstractCegarLoop]: Abstraction has 261725 states and 461289 transitions. [2022-12-13 21:05:49,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:05:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 261725 states and 461289 transitions. [2022-12-13 21:05:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:05:49,717 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:05:49,717 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] [2022-12-13 21:05:49,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:05:49,718 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:05:49,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:49,718 INFO L85 PathProgramCache]: Analyzing trace with hash 544588202, now seen corresponding path program 1 times [2022-12-13 21:05:49,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:49,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125957738] [2022-12-13 21:05:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:49,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:05:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:05:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:49,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:05:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:49,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:05:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:49,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:05:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:49,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125957738] [2022-12-13 21:05:49,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125957738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:49,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:49,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:05:49,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381947183] [2022-12-13 21:05:49,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:49,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:05:49,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:49,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:05:49,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:05:49,856 INFO L87 Difference]: Start difference. First operand 261725 states and 461289 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:06:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:06:38,917 INFO L93 Difference]: Finished difference Result 595710 states and 1093606 transitions. [2022-12-13 21:06:38,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:06:38,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:06:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:06:40,593 INFO L225 Difference]: With dead ends: 595710 [2022-12-13 21:06:40,593 INFO L226 Difference]: Without dead ends: 336122 [2022-12-13 21:06:41,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:06:41,304 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4776 mSDsluCounter, 16505 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4792 SdHoareTripleChecker+Valid, 20681 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:06:41,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4792 Valid, 20681 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 21:06:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336122 states. [2022-12-13 21:07:11,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336122 to 261725. [2022-12-13 21:07:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261725 states, 239167 states have (on average 1.544640355901943) internal successors, (369427), 240193 states have internal predecessors, (369427), 15382 states have call successors, (15382), 6150 states have call predecessors, (15382), 7174 states have return successors, (75455), 16405 states have call predecessors, (75455), 15382 states have call successors, (75455) [2022-12-13 21:07:13,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261725 states to 261725 states and 460264 transitions. [2022-12-13 21:07:13,153 INFO L78 Accepts]: Start accepts. Automaton has 261725 states and 460264 transitions. Word has length 134 [2022-12-13 21:07:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:07:13,153 INFO L495 AbstractCegarLoop]: Abstraction has 261725 states and 460264 transitions. [2022-12-13 21:07:13,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:07:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 261725 states and 460264 transitions. [2022-12-13 21:07:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:07:13,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:07:13,327 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] [2022-12-13 21:07:13,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:07:13,328 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:07:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:07:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash -762554196, now seen corresponding path program 1 times [2022-12-13 21:07:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:07:13,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685336045] [2022-12-13 21:07:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:07:13,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:07:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:13,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:07:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:13,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:07:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:13,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:07:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:07:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:07:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:07:13,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:07:13,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685336045] [2022-12-13 21:07:13,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685336045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:07:13,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:07:13,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:07:13,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889122290] [2022-12-13 21:07:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:07:13,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:07:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:07:13,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:07:13,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:07:13,453 INFO L87 Difference]: Start difference. First operand 261725 states and 460264 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:09:08,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:09:08,770 INFO L93 Difference]: Finished difference Result 964118 states and 1716404 transitions. [2022-12-13 21:09:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:09:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:09:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:09:11,924 INFO L225 Difference]: With dead ends: 964118 [2022-12-13 21:09:11,924 INFO L226 Difference]: Without dead ends: 704530 [2022-12-13 21:09:13,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:09:13,053 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 5075 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5089 SdHoareTripleChecker+Valid, 21545 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:09:13,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5089 Valid, 21545 Invalid, 2622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 21:09:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704530 states. [2022-12-13 21:10:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704530 to 521567. [2022-12-13 21:10:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521567 states, 477505 states have (on average 1.544610004083727) internal successors, (737559), 479555 states have internal predecessors, (737559), 29718 states have call successors, (29718), 12294 states have call predecessors, (29718), 14342 states have return successors, (208913), 31765 states have call predecessors, (208913), 29718 states have call successors, (208913) [2022-12-13 21:10:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521567 states to 521567 states and 976190 transitions. [2022-12-13 21:10:22,158 INFO L78 Accepts]: Start accepts. Automaton has 521567 states and 976190 transitions. Word has length 134 [2022-12-13 21:10:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:10:22,158 INFO L495 AbstractCegarLoop]: Abstraction has 521567 states and 976190 transitions. [2022-12-13 21:10:22,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:10:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 521567 states and 976190 transitions. [2022-12-13 21:10:22,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:10:22,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:10:22,347 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] [2022-12-13 21:10:22,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:10:22,347 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:10:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1134942570, now seen corresponding path program 1 times [2022-12-13 21:10:22,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:22,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49875628] [2022-12-13 21:10:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:10:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:10:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:10:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:10:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:22,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:10:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:22,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:22,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49875628] [2022-12-13 21:10:22,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49875628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:22,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:10:22,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:10:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631064772] [2022-12-13 21:10:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:10:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:10:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:10:22,459 INFO L87 Difference]: Start difference. First operand 521567 states and 976190 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:12:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:12:06,190 INFO L93 Difference]: Finished difference Result 1181950 states and 2339801 transitions. [2022-12-13 21:12:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:12:06,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-12-13 21:12:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:12:09,504 INFO L225 Difference]: With dead ends: 1181950 [2022-12-13 21:12:09,504 INFO L226 Difference]: Without dead ends: 662520 [2022-12-13 21:12:11,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:12:11,184 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4893 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4909 SdHoareTripleChecker+Valid, 16581 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:12:11,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4909 Valid, 16581 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 21:12:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662520 states. [2022-12-13 21:13:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662520 to 521567. [2022-12-13 21:13:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521567 states, 477505 states have (on average 1.5403189495397953) internal successors, (735510), 479555 states have internal predecessors, (735510), 29718 states have call successors, (29718), 12294 states have call predecessors, (29718), 14342 states have return successors, (208913), 31765 states have call predecessors, (208913), 29718 states have call successors, (208913) [2022-12-13 21:13:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521567 states to 521567 states and 974141 transitions. [2022-12-13 21:13:21,716 INFO L78 Accepts]: Start accepts. Automaton has 521567 states and 974141 transitions. Word has length 134 [2022-12-13 21:13:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:21,716 INFO L495 AbstractCegarLoop]: Abstraction has 521567 states and 974141 transitions. [2022-12-13 21:13:21,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 21:13:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 521567 states and 974141 transitions. [2022-12-13 21:13:21,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 21:13:21,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:21,905 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] [2022-12-13 21:13:21,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:13:21,906 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:21,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2128983828, now seen corresponding path program 1 times [2022-12-13 21:13:21,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:21,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065964839] [2022-12-13 21:13:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:21,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 21:13:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:13:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:22,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 21:13:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 21:13:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:22,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 21:13:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:22,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:22,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065964839] [2022-12-13 21:13:22,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065964839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:22,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:22,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:13:22,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823814282] [2022-12-13 21:13:22,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:22,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:13:22,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:22,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:13:22,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:13:22,031 INFO L87 Difference]: Start difference. First operand 521567 states and 974141 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)