./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc --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 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:46:37,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:46:37,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:46:37,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:46:37,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:46:37,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:46:37,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:46:37,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:46:37,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:46:37,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:46:37,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:46:37,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:46:37,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:46:37,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:46:37,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:46:37,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:46:37,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:46:37,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:46:37,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:46:37,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:46:37,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:46:37,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:46:37,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:46:37,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:46:37,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:46:37,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:46:37,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:46:37,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:46:37,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:46:37,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:46:37,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:46:37,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:46:37,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:46:37,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:46:37,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:46:37,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:46:37,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:46:37,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:46:37,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:46:37,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:46:37,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:46:37,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:46:37,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:46:37,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:46:37,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:46:37,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:46:37,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:46:37,412 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:46:37,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:46:37,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:46:37,413 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:46:37,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:46:37,414 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:46:37,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:46:37,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:46:37,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:46:37,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:46:37,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:46:37,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:46:37,416 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:46:37,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:46:37,416 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:46:37,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:46:37,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:46:37,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:46:37,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:46:37,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:46:37,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:46:37,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:46:37,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:46:37,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:46:37,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:46:37,433 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:46:37,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:46:37,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:46:37,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a [2022-11-02 20:46:37,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:46:37,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:46:37,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:46:37,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:46:37,805 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:46:37,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2022-11-02 20:46:37,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/data/489e38f86/bdbf68b04f72411a9e264743a7ee619f/FLAG9a81b3719 [2022-11-02 20:46:39,064 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:46:39,065 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2022-11-02 20:46:39,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/data/489e38f86/bdbf68b04f72411a9e264743a7ee619f/FLAG9a81b3719 [2022-11-02 20:46:39,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/data/489e38f86/bdbf68b04f72411a9e264743a7ee619f [2022-11-02 20:46:39,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:46:39,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:46:39,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:46:39,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:46:39,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:46:39,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:46:39" (1/1) ... [2022-11-02 20:46:39,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31221198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:39, skipping insertion in model container [2022-11-02 20:46:39,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:46:39" (1/1) ... [2022-11-02 20:46:39,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:46:39,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:46:42,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2022-11-02 20:46:42,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2022-11-02 20:46:42,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:46:42,392 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:46:43,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2022-11-02 20:46:43,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2022-11-02 20:46:43,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:46:43,753 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:46:43,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43 WrapperNode [2022-11-02 20:46:43,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:46:43,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:46:43,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:46:43,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:46:43,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:43,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:44,392 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12793 [2022-11-02 20:46:44,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:46:44,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:46:44,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:46:44,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:46:44,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:44,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:44,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:44,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:44,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:44,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:44,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:44,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:45,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:46:45,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:46:45,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:46:45,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:46:45,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (1/1) ... [2022-11-02 20:46:45,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:46:45,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:45,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:46:45,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_415e3022-0066-47d1-b2f1-77f6a970981d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:46:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:46:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 20:46:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 20:46:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 20:46:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 20:46:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 20:46:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 20:46:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 20:46:45,218 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 20:46:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 20:46:45,218 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 20:46:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 20:46:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 20:46:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:46:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:46:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:46:45,363 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:46:45,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:46:54,538 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:46:54,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:46:54,563 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-02 20:46:54,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:46:54 BoogieIcfgContainer [2022-11-02 20:46:54,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:46:54,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:46:54,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:46:54,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:46:54,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:46:39" (1/3) ... [2022-11-02 20:46:54,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6badff8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:46:54, skipping insertion in model container [2022-11-02 20:46:54,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:43" (2/3) ... [2022-11-02 20:46:54,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6badff8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:46:54, skipping insertion in model container [2022-11-02 20:46:54,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:46:54" (3/3) ... [2022-11-02 20:46:54,581 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.05.cil-1.c [2022-11-02 20:46:54,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:46:54,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:46:54,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:46:54,731 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;@5564ae20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:46:54,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:46:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-02 20:46:54,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:46:54,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:54,767 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] [2022-11-02 20:46:54,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:54,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:54,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2022-11-02 20:46:54,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:54,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142117013] [2022-11-02 20:46:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:54,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:46:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:55,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:46:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:46:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:55,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:46:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:46:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:55,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:55,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142117013] [2022-11-02 20:46:55,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142117013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:55,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:55,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:46:55,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799356151] [2022-11-02 20:46:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:55,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:46:55,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:46:55,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:55,374 INFO L87 Difference]: Start difference. First operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-11-02 20:46:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:56,560 INFO L93 Difference]: Finished difference Result 4837 states and 8925 transitions. [2022-11-02 20:46:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:46:56,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2022-11-02 20:46:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:56,587 INFO L225 Difference]: With dead ends: 4837 [2022-11-02 20:46:56,587 INFO L226 Difference]: Without dead ends: 2388 [2022-11-02 20:46:56,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:46:56,603 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 507 mSDsluCounter, 12283 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 16644 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:56,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 16644 Invalid, 398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:46:56,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2022-11-02 20:46:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2323. [2022-11-02 20:46:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2296 states have (on average 1.84102787456446) internal successors, (4227), 2298 states have internal predecessors, (4227), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-02 20:46:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 4265 transitions. [2022-11-02 20:46:56,746 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 4265 transitions. Word has length 101 [2022-11-02 20:46:56,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:56,746 INFO L495 AbstractCegarLoop]: Abstraction has 2323 states and 4265 transitions. [2022-11-02 20:46:56,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-11-02 20:46:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 4265 transitions. [2022-11-02 20:46:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:46:56,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:56,751 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] [2022-11-02 20:46:56,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:46:56,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash 990118841, now seen corresponding path program 1 times [2022-11-02 20:46:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:56,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113524773] [2022-11-02 20:46:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:46:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:46:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:46:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:46:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:46:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:57,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:57,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113524773] [2022-11-02 20:46:57,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113524773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:57,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:57,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:46:57,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778324601] [2022-11-02 20:46:57,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:57,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:46:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:46:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:46:57,055 INFO L87 Difference]: Start difference. First operand 2323 states and 4265 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-11-02 20:46:59,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:59,083 INFO L93 Difference]: Finished difference Result 2835 states and 5072 transitions. [2022-11-02 20:46:59,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:46:59,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-11-02 20:46:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:59,098 INFO L225 Difference]: With dead ends: 2835 [2022-11-02 20:46:59,098 INFO L226 Difference]: Without dead ends: 2646 [2022-11-02 20:46:59,100 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 [2022-11-02 20:46:59,102 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 4705 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 16693 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:59,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 16693 Invalid, 1081 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:46:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-11-02 20:46:59,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2517. [2022-11-02 20:46:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.820980153908465) internal successors, (4496), 2472 states have internal predecessors, (4496), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-11-02 20:46:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4565 transitions. [2022-11-02 20:46:59,190 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4565 transitions. Word has length 101 [2022-11-02 20:46:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:59,191 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 4565 transitions. [2022-11-02 20:46:59,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-11-02 20:46:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4565 transitions. [2022-11-02 20:46:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:46:59,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:59,194 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] [2022-11-02 20:46:59,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:46:59,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:59,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:59,196 INFO L85 PathProgramCache]: Analyzing trace with hash -726765763, now seen corresponding path program 1 times [2022-11-02 20:46:59,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:59,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336370815] [2022-11-02 20:46:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:59,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:46:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:46:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:46:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:46:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:59,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:46:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:59,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:59,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336370815] [2022-11-02 20:46:59,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336370815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:59,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:59,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:46:59,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470964078] [2022-11-02 20:46:59,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:59,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:46:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:59,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:46:59,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:46:59,438 INFO L87 Difference]: Start difference. First operand 2517 states and 4565 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:01,742 INFO L93 Difference]: Finished difference Result 3293 states and 5783 transitions. [2022-11-02 20:47:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:47:01,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-11-02 20:47:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:01,756 INFO L225 Difference]: With dead ends: 3293 [2022-11-02 20:47:01,757 INFO L226 Difference]: Without dead ends: 2910 [2022-11-02 20:47:01,759 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 [2022-11-02 20:47:01,760 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 4711 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 21269 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:01,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 21269 Invalid, 1604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:47:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2022-11-02 20:47:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2698. [2022-11-02 20:47:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2629 states have (on average 1.8025865348041081) internal successors, (4739), 2633 states have internal predecessors, (4739), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-11-02 20:47:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4838 transitions. [2022-11-02 20:47:01,900 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4838 transitions. Word has length 101 [2022-11-02 20:47:01,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:01,901 INFO L495 AbstractCegarLoop]: Abstraction has 2698 states and 4838 transitions. [2022-11-02 20:47:01,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4838 transitions. [2022-11-02 20:47:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:47:01,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:01,904 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] [2022-11-02 20:47:01,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:47:01,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:01,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:01,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1689070587, now seen corresponding path program 1 times [2022-11-02 20:47:01,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:01,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398997768] [2022-11-02 20:47:01,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:01,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:47:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:02,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:47:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:02,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:47:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:02,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:02,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398997768] [2022-11-02 20:47:02,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398997768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:02,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:02,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:47:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489821857] [2022-11-02 20:47:02,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:02,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:47:02,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:47:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:47:02,193 INFO L87 Difference]: Start difference. First operand 2698 states and 4838 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:04,395 INFO L93 Difference]: Finished difference Result 3966 states and 6824 transitions. [2022-11-02 20:47:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:47:04,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-11-02 20:47:04,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:04,416 INFO L225 Difference]: With dead ends: 3966 [2022-11-02 20:47:04,417 INFO L226 Difference]: Without dead ends: 3402 [2022-11-02 20:47:04,423 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 [2022-11-02 20:47:04,434 INFO L413 NwaCegarLoop]: 4449 mSDtfsCounter, 4705 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 21257 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:04,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 21257 Invalid, 1595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:47:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2022-11-02 20:47:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3064. [2022-11-02 20:47:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2953 states have (on average 1.771757534710464) internal successors, (5232), 2959 states have internal predecessors, (5232), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-11-02 20:47:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5395 transitions. [2022-11-02 20:47:04,656 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5395 transitions. Word has length 101 [2022-11-02 20:47:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:04,657 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 5395 transitions. [2022-11-02 20:47:04,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5395 transitions. [2022-11-02 20:47:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:47:04,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:04,661 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] [2022-11-02 20:47:04,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:47:04,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:04,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1039138759, now seen corresponding path program 1 times [2022-11-02 20:47:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:04,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518475771] [2022-11-02 20:47:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:04,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:47:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:04,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:47:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:04,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:47:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:04,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:04,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518475771] [2022-11-02 20:47:04,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518475771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:04,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:04,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:47:05,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108331636] [2022-11-02 20:47:05,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:05,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:47:05,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:05,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:47:05,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:47:05,002 INFO L87 Difference]: Start difference. First operand 3064 states and 5395 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:07,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:07,260 INFO L93 Difference]: Finished difference Result 5270 states and 8833 transitions. [2022-11-02 20:47:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:47:07,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-11-02 20:47:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:07,280 INFO L225 Difference]: With dead ends: 5270 [2022-11-02 20:47:07,280 INFO L226 Difference]: Without dead ends: 4340 [2022-11-02 20:47:07,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:47:07,286 INFO L413 NwaCegarLoop]: 4444 mSDtfsCounter, 4704 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4716 SdHoareTripleChecker+Valid, 21252 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:07,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4716 Valid, 21252 Invalid, 1587 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:47:07,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2022-11-02 20:47:07,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3797. [2022-11-02 20:47:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3602 states have (on average 1.7262631871182677) internal successors, (6218), 3612 states have internal predecessors, (6218), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-11-02 20:47:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6515 transitions. [2022-11-02 20:47:07,512 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6515 transitions. Word has length 101 [2022-11-02 20:47:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:07,512 INFO L495 AbstractCegarLoop]: Abstraction has 3797 states and 6515 transitions. [2022-11-02 20:47:07,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6515 transitions. [2022-11-02 20:47:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:47:07,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:07,515 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] [2022-11-02 20:47:07,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:47:07,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:07,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:07,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2096976837, now seen corresponding path program 1 times [2022-11-02 20:47:07,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:07,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692835229] [2022-11-02 20:47:07,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:07,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:47:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:47:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:47:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:07,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:07,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692835229] [2022-11-02 20:47:07,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692835229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:07,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:07,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:47:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400799082] [2022-11-02 20:47:07,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:07,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:47:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:07,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:47:07,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:47:07,710 INFO L87 Difference]: Start difference. First operand 3797 states and 6515 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:09,957 INFO L93 Difference]: Finished difference Result 7877 states and 12867 transitions. [2022-11-02 20:47:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:47:09,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-11-02 20:47:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:09,993 INFO L225 Difference]: With dead ends: 7877 [2022-11-02 20:47:09,993 INFO L226 Difference]: Without dead ends: 6214 [2022-11-02 20:47:10,000 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 [2022-11-02 20:47:10,003 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 4703 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 21247 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:10,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4715 Valid, 21247 Invalid, 1579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:47:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2022-11-02 20:47:10,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 5270. [2022-11-02 20:47:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 4907 states have (on average 1.6710821275728551) internal successors, (8200), 4925 states have internal predecessors, (8200), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-11-02 20:47:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8783 transitions. [2022-11-02 20:47:10,358 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8783 transitions. Word has length 101 [2022-11-02 20:47:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:10,358 INFO L495 AbstractCegarLoop]: Abstraction has 5270 states and 8783 transitions. [2022-11-02 20:47:10,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8783 transitions. [2022-11-02 20:47:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:47:10,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:10,366 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] [2022-11-02 20:47:10,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:47:10,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:10,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:10,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1055487993, now seen corresponding path program 1 times [2022-11-02 20:47:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:10,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105249217] [2022-11-02 20:47:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:10,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:10,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:47:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:47:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:47:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:10,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:10,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105249217] [2022-11-02 20:47:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105249217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:10,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:10,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:47:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941370881] [2022-11-02 20:47:10,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:10,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:47:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:47:10,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:47:10,588 INFO L87 Difference]: Start difference. First operand 5270 states and 8783 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:13,371 INFO L93 Difference]: Finished difference Result 14356 states and 22887 transitions. [2022-11-02 20:47:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:47:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-11-02 20:47:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:13,430 INFO L225 Difference]: With dead ends: 14356 [2022-11-02 20:47:13,431 INFO L226 Difference]: Without dead ends: 11220 [2022-11-02 20:47:13,445 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 [2022-11-02 20:47:13,446 INFO L413 NwaCegarLoop]: 4319 mSDtfsCounter, 4963 mSDsluCounter, 16488 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 20807 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:13,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4981 Valid, 20807 Invalid, 1437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:47:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2022-11-02 20:47:14,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 8183. [2022-11-02 20:47:14,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 7500 states have (on average 1.6205333333333334) internal successors, (12154), 7534 states have internal predecessors, (12154), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-11-02 20:47:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 13331 transitions. [2022-11-02 20:47:14,187 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 13331 transitions. Word has length 101 [2022-11-02 20:47:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:14,188 INFO L495 AbstractCegarLoop]: Abstraction has 8183 states and 13331 transitions. [2022-11-02 20:47:14,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 13331 transitions. [2022-11-02 20:47:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:47:14,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:14,196 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] [2022-11-02 20:47:14,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:47:14,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:14,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:14,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1295727739, now seen corresponding path program 1 times [2022-11-02 20:47:14,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:14,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379849247] [2022-11-02 20:47:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:14,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:14,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:14,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:47:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:47:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:47:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:14,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:14,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379849247] [2022-11-02 20:47:14,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379849247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:14,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:14,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:47:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457152662] [2022-11-02 20:47:14,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:14,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:47:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:14,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:47:14,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:47:14,528 INFO L87 Difference]: Start difference. First operand 8183 states and 13331 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:18,333 INFO L93 Difference]: Finished difference Result 25523 states and 40429 transitions. [2022-11-02 20:47:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:47:18,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-11-02 20:47:18,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:18,428 INFO L225 Difference]: With dead ends: 25523 [2022-11-02 20:47:18,429 INFO L226 Difference]: Without dead ends: 19474 [2022-11-02 20:47:18,456 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 [2022-11-02 20:47:18,457 INFO L413 NwaCegarLoop]: 4502 mSDtfsCounter, 4743 mSDsluCounter, 16797 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 21299 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:18,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 21299 Invalid, 1791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:47:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19474 states. [2022-11-02 20:47:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19474 to 13832. [2022-11-02 20:47:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13832 states, 12525 states have (on average 1.582435129740519) internal successors, (19820), 12591 states have internal predecessors, (19820), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-11-02 20:47:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13832 states to 13832 states and 22315 transitions. [2022-11-02 20:47:19,863 INFO L78 Accepts]: Start accepts. Automaton has 13832 states and 22315 transitions. Word has length 101 [2022-11-02 20:47:19,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:19,864 INFO L495 AbstractCegarLoop]: Abstraction has 13832 states and 22315 transitions. [2022-11-02 20:47:19,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 13832 states and 22315 transitions. [2022-11-02 20:47:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:47:19,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:19,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:19,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:47:19,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:19,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2134761401, now seen corresponding path program 1 times [2022-11-02 20:47:19,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:19,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588085038] [2022-11-02 20:47:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:19,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:19,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:47:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:20,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:20,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:47:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:47:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:20,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:20,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588085038] [2022-11-02 20:47:20,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588085038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:20,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:20,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:47:20,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928386210] [2022-11-02 20:47:20,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:20,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:47:20,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:20,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:47:20,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:47:20,038 INFO L87 Difference]: Start difference. First operand 13832 states and 22315 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:25,568 INFO L93 Difference]: Finished difference Result 46786 states and 74419 transitions. [2022-11-02 20:47:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:47:25,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-11-02 20:47:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:25,716 INFO L225 Difference]: With dead ends: 46786 [2022-11-02 20:47:25,717 INFO L226 Difference]: Without dead ends: 35088 [2022-11-02 20:47:25,769 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 [2022-11-02 20:47:25,772 INFO L413 NwaCegarLoop]: 4422 mSDtfsCounter, 4835 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 21222 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:25,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4853 Valid, 21222 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:47:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35088 states. [2022-11-02 20:47:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35088 to 25257. [2022-11-02 20:47:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25257 states, 22734 states have (on average 1.5588105920647488) internal successors, (35438), 22864 states have internal predecessors, (35438), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-11-02 20:47:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25257 states to 25257 states and 40991 transitions. [2022-11-02 20:47:28,409 INFO L78 Accepts]: Start accepts. Automaton has 25257 states and 40991 transitions. Word has length 101 [2022-11-02 20:47:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:28,409 INFO L495 AbstractCegarLoop]: Abstraction has 25257 states and 40991 transitions. [2022-11-02 20:47:28,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 25257 states and 40991 transitions. [2022-11-02 20:47:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:47:28,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:28,430 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] [2022-11-02 20:47:28,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:47:28,430 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2133140293, now seen corresponding path program 1 times [2022-11-02 20:47:28,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:28,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182291333] [2022-11-02 20:47:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:28,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:47:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:47:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:47:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:28,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:28,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182291333] [2022-11-02 20:47:28,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182291333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:28,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:28,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:47:28,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341766756] [2022-11-02 20:47:28,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:28,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:47:28,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:47:28,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:47:28,610 INFO L87 Difference]: Start difference. First operand 25257 states and 40991 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:38,194 INFO L93 Difference]: Finished difference Result 88545 states and 143161 transitions. [2022-11-02 20:47:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:47:38,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-11-02 20:47:38,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:38,664 INFO L225 Difference]: With dead ends: 88545 [2022-11-02 20:47:38,664 INFO L226 Difference]: Without dead ends: 65422 [2022-11-02 20:47:38,748 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 [2022-11-02 20:47:38,750 INFO L413 NwaCegarLoop]: 4415 mSDtfsCounter, 4798 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21215 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:38,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21215 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:47:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65422 states. [2022-11-02 20:47:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65422 to 48042. [2022-11-02 20:47:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5465690250515631) internal successors, (66736), 43409 states have internal predecessors, (66736), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-11-02 20:47:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79735 transitions. [2022-11-02 20:47:44,594 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79735 transitions. Word has length 101 [2022-11-02 20:47:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:44,594 INFO L495 AbstractCegarLoop]: Abstraction has 48042 states and 79735 transitions. [2022-11-02 20:47:44,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79735 transitions. [2022-11-02 20:47:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:47:44,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:44,881 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] [2022-11-02 20:47:44,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:47:44,881 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash 84490105, now seen corresponding path program 1 times [2022-11-02 20:47:44,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:44,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100680447] [2022-11-02 20:47:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:44,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:47:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:47:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:47:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:45,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:45,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100680447] [2022-11-02 20:47:45,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100680447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:45,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:45,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:47:45,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457707550] [2022-11-02 20:47:45,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:45,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:47:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:47:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:47:45,106 INFO L87 Difference]: Start difference. First operand 48042 states and 79735 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:53,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:53,075 INFO L93 Difference]: Finished difference Result 105804 states and 179852 transitions. [2022-11-02 20:47:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:47:53,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-11-02 20:47:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:53,332 INFO L225 Difference]: With dead ends: 105804 [2022-11-02 20:47:53,332 INFO L226 Difference]: Without dead ends: 59896 [2022-11-02 20:47:53,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:47:53,475 INFO L413 NwaCegarLoop]: 4242 mSDtfsCounter, 4508 mSDsluCounter, 16313 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 20555 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:53,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4521 Valid, 20555 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:47:53,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59896 states. [2022-11-02 20:47:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59896 to 48042. [2022-11-02 20:47:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5406131955226994) internal successors, (66479), 43409 states have internal predecessors, (66479), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-11-02 20:47:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79478 transitions. [2022-11-02 20:47:59,321 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79478 transitions. Word has length 101 [2022-11-02 20:47:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:59,321 INFO L495 AbstractCegarLoop]: Abstraction has 48042 states and 79478 transitions. [2022-11-02 20:47:59,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 20:47:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79478 transitions. [2022-11-02 20:47:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:47:59,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:59,378 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] [2022-11-02 20:47:59,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:47:59,378 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:59,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash 971712951, now seen corresponding path program 1 times [2022-11-02 20:47:59,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:59,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592300842] [2022-11-02 20:47:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:59,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:47:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:47:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:47:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:59,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:59,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592300842] [2022-11-02 20:47:59,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592300842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:59,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:59,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:47:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647531226] [2022-11-02 20:47:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:59,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:47:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:47:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:47:59,539 INFO L87 Difference]: Start difference. First operand 48042 states and 79478 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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)