./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:03:02,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:03:02,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:03:02,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:03:02,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:03:02,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:03:02,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:03:02,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:03:02,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:03:02,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:03:02,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:03:02,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:03:02,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:03:02,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:03:02,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:03:02,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:03:02,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:03:02,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:03:02,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:03:02,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:03:02,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:03:02,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:03:02,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:03:02,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:03:02,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:03:02,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:03:02,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:03:02,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:03:02,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:03:02,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:03:02,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:03:02,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:03:02,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:03:02,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:03:02,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:03:02,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:03:02,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:03:02,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:03:02,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:03:02,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:03:02,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:03:02,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:03:02,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:03:02,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:03:02,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:03:02,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:03:02,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:03:02,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:03:02,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:03:02,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:03:02,426 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:03:02,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:03:02,428 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:03:02,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:03:02,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:03:02,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:03:02,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:03:02,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:03:02,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:03:02,431 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:03:02,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:03:02,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:03:02,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:03:02,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:03:02,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:03:02,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:03:02,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:03:02,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:03:02,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:03:02,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:03:02,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:03:02,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:03:02,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:03:02,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:03:02,436 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:03:02,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:03:02,437 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 [2022-11-25 18:03:02,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:03:02,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:03:02,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:03:02,861 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:03:02,862 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:03:02,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-11-25 18:03:06,067 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:03:06,813 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:03:06,815 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-11-25 18:03:06,888 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/data/6a0d2345c/0f9df982e89b45ea8baf89aa2f274179/FLAG51c665b8c [2022-11-25 18:03:06,913 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/data/6a0d2345c/0f9df982e89b45ea8baf89aa2f274179 [2022-11-25 18:03:06,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:03:06,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:03:06,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:03:06,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:03:06,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:03:06,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:03:06" (1/1) ... [2022-11-25 18:03:06,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c6296d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:06, skipping insertion in model container [2022-11-25 18:03:06,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:03:06" (1/1) ... [2022-11-25 18:03:06,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:03:07,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:03:09,665 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-11-25 18:03:09,703 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-11-25 18:03:09,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:03:10,008 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:03:11,264 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-11-25 18:03:11,276 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-11-25 18:03:11,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:03:11,365 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:03:11,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11 WrapperNode [2022-11-25 18:03:11,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:03:11,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:03:11,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:03:11,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:03:11,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:11,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:11,895 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2022-11-25 18:03:11,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:03:11,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:03:11,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:03:11,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:03:11,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:11,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:11,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:11,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:12,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:12,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:12,344 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:12,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:12,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:03:12,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:03:12,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:03:12,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:03:12,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (1/1) ... [2022-11-25 18:03:12,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:03:12,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:12,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:03:12,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:03:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:03:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 18:03:12,661 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 18:03:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 18:03:12,661 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 18:03:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 18:03:12,661 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 18:03:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 18:03:12,662 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 18:03:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 18:03:12,662 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 18:03:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 18:03:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 18:03:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:03:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:03:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:03:12,856 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:03:12,858 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:03:22,873 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:03:22,928 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:03:22,929 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-25 18:03:22,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:03:22 BoogieIcfgContainer [2022-11-25 18:03:22,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:03:22,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:03:22,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:03:22,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:03:22,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:03:06" (1/3) ... [2022-11-25 18:03:22,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b92a1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:03:22, skipping insertion in model container [2022-11-25 18:03:22,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:11" (2/3) ... [2022-11-25 18:03:22,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b92a1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:03:22, skipping insertion in model container [2022-11-25 18:03:22,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:03:22" (3/3) ... [2022-11-25 18:03:22,961 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.04.cil-1.c [2022-11-25 18:03:22,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:03:22,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:03:23,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:03:23,143 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;@7ab61a98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:03:23,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:03:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-25 18:03:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:23,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:23,188 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] [2022-11-25 18:03:23,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:23,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-11-25 18:03:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:23,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459070154] [2022-11-25 18:03:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:23,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:23,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:23,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459070154] [2022-11-25 18:03:23,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459070154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:23,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:23,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:03:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540994743] [2022-11-25 18:03:23,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:23,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:03:23,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:03:23,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:03:23,795 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-11-25 18:03:25,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:03:25,201 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2022-11-25 18:03:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:03:25,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 90 [2022-11-25 18:03:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:03:25,229 INFO L225 Difference]: With dead ends: 4778 [2022-11-25 18:03:25,230 INFO L226 Difference]: Without dead ends: 2352 [2022-11-25 18:03:25,238 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 [2022-11-25 18:03:25,242 INFO L413 NwaCegarLoop]: 4194 mSDtfsCounter, 438 mSDsluCounter, 12257 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 16451 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:03:25,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 16451 Invalid, 460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 18:03:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-11-25 18:03:25,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2022-11-25 18:03:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-25 18:03:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-11-25 18:03:25,450 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-11-25 18:03:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:03:25,451 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-11-25 18:03:25,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-11-25 18:03:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-11-25 18:03:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:25,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:25,465 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] [2022-11-25 18:03:25,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:03:25,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:25,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-11-25 18:03:25,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:25,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170317390] [2022-11-25 18:03:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:25,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:25,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170317390] [2022-11-25 18:03:25,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170317390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:25,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:25,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:03:25,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346137172] [2022-11-25 18:03:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:25,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:03:25,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:25,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:03:25,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:03:25,852 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-11-25 18:03:27,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:03:27,480 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2022-11-25 18:03:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:03:27,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-11-25 18:03:27,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:03:27,494 INFO L225 Difference]: With dead ends: 2738 [2022-11-25 18:03:27,494 INFO L226 Difference]: Without dead ends: 2573 [2022-11-25 18:03:27,496 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 [2022-11-25 18:03:27,498 INFO L413 NwaCegarLoop]: 4130 mSDtfsCounter, 4598 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4609 SdHoareTripleChecker+Valid, 16444 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:03:27,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4609 Valid, 16444 Invalid, 1059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 18:03:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-11-25 18:03:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2022-11-25 18:03:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-11-25 18:03:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2022-11-25 18:03:27,590 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2022-11-25 18:03:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:03:27,591 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2022-11-25 18:03:27,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-11-25 18:03:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2022-11-25 18:03:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:27,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:27,593 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] [2022-11-25 18:03:27,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:03:27,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:27,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-11-25 18:03:27,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:27,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822146401] [2022-11-25 18:03:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:27,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:27,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:27,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:27,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:27,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:27,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822146401] [2022-11-25 18:03:27,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822146401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:27,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:27,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:03:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91639839] [2022-11-25 18:03:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:27,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:27,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:27,837 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:03:29,923 INFO L93 Difference]: Finished difference Result 3131 states and 5513 transitions. [2022-11-25 18:03:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:03:29,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-11-25 18:03:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:03:29,938 INFO L225 Difference]: With dead ends: 3131 [2022-11-25 18:03:29,938 INFO L226 Difference]: Without dead ends: 2798 [2022-11-25 18:03:29,941 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 [2022-11-25 18:03:29,943 INFO L413 NwaCegarLoop]: 4221 mSDtfsCounter, 4601 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4612 SdHoareTripleChecker+Valid, 20901 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:03:29,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4612 Valid, 20901 Invalid, 1526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 18:03:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-11-25 18:03:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2623. [2022-11-25 18:03:30,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8075870160344154) internal successors, (4622), 2561 states have internal predecessors, (4622), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-11-25 18:03:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4715 transitions. [2022-11-25 18:03:30,078 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4715 transitions. Word has length 90 [2022-11-25 18:03:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:03:30,080 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 4715 transitions. [2022-11-25 18:03:30,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4715 transitions. [2022-11-25 18:03:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:30,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:30,085 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] [2022-11-25 18:03:30,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:03:30,086 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2022-11-25 18:03:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:30,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529437235] [2022-11-25 18:03:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:30,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:30,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:30,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:30,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:30,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:30,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:30,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529437235] [2022-11-25 18:03:30,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529437235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:30,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:30,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:03:30,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667598019] [2022-11-25 18:03:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:30,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:30,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:30,348 INFO L87 Difference]: Start difference. First operand 2623 states and 4715 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:03:32,362 INFO L93 Difference]: Finished difference Result 3709 states and 6395 transitions. [2022-11-25 18:03:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:03:32,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-11-25 18:03:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:03:32,394 INFO L225 Difference]: With dead ends: 3709 [2022-11-25 18:03:32,394 INFO L226 Difference]: Without dead ends: 3219 [2022-11-25 18:03:32,400 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 [2022-11-25 18:03:32,402 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 4649 mSDsluCounter, 16410 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 20545 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:03:32,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 20545 Invalid, 1381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 18:03:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-11-25 18:03:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2938. [2022-11-25 18:03:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2832 states have (on average 1.7778954802259888) internal successors, (5035), 2838 states have internal predecessors, (5035), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-11-25 18:03:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 5188 transitions. [2022-11-25 18:03:32,755 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 5188 transitions. Word has length 90 [2022-11-25 18:03:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:03:32,764 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 5188 transitions. [2022-11-25 18:03:32,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 5188 transitions. [2022-11-25 18:03:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:32,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:32,768 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] [2022-11-25 18:03:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:03:32,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:32,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2022-11-25 18:03:32,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:32,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565040366] [2022-11-25 18:03:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:32,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:33,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:33,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:33,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:33,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565040366] [2022-11-25 18:03:33,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565040366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:33,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:33,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:03:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324240771] [2022-11-25 18:03:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:33,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:33,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:33,083 INFO L87 Difference]: Start difference. First operand 2938 states and 5188 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:35,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:03:35,211 INFO L93 Difference]: Finished difference Result 4824 states and 8092 transitions. [2022-11-25 18:03:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:03:35,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-11-25 18:03:35,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:03:35,232 INFO L225 Difference]: With dead ends: 4824 [2022-11-25 18:03:35,232 INFO L226 Difference]: Without dead ends: 4019 [2022-11-25 18:03:35,237 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 [2022-11-25 18:03:35,238 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 4599 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4610 SdHoareTripleChecker+Valid, 20899 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:03:35,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4610 Valid, 20899 Invalid, 1517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 18:03:35,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2022-11-25 18:03:35,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3569. [2022-11-25 18:03:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3383 states have (on average 1.7324859592078037) internal successors, (5861), 3393 states have internal predecessors, (5861), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-11-25 18:03:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6140 transitions. [2022-11-25 18:03:35,506 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6140 transitions. Word has length 90 [2022-11-25 18:03:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:03:35,507 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 6140 transitions. [2022-11-25 18:03:35,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:35,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6140 transitions. [2022-11-25 18:03:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:35,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:35,510 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] [2022-11-25 18:03:35,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:03:35,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:35,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:35,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2022-11-25 18:03:35,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:35,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430054497] [2022-11-25 18:03:35,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:35,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:35,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:35,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:35,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:35,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:35,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:35,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:35,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430054497] [2022-11-25 18:03:35,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430054497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:35,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:35,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:03:35,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940342854] [2022-11-25 18:03:35,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:35,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:35,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:35,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:35,759 INFO L87 Difference]: Start difference. First operand 3569 states and 6140 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:38,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:03:38,093 INFO L93 Difference]: Finished difference Result 7566 states and 12260 transitions. [2022-11-25 18:03:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:03:38,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-11-25 18:03:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:03:38,122 INFO L225 Difference]: With dead ends: 7566 [2022-11-25 18:03:38,122 INFO L226 Difference]: Without dead ends: 6130 [2022-11-25 18:03:38,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:03:38,130 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 4769 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 20889 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:03:38,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4785 Valid, 20889 Invalid, 1487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 18:03:38,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2022-11-25 18:03:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 4821. [2022-11-25 18:03:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4483 states have (on average 1.677671202319875) internal successors, (7521), 4501 states have internal predecessors, (7521), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2022-11-25 18:03:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 8054 transitions. [2022-11-25 18:03:38,531 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 8054 transitions. Word has length 90 [2022-11-25 18:03:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:03:38,531 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 8054 transitions. [2022-11-25 18:03:38,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 8054 transitions. [2022-11-25 18:03:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:38,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:38,537 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] [2022-11-25 18:03:38,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:03:38,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:38,538 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2022-11-25 18:03:38,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:38,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094995792] [2022-11-25 18:03:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:38,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:38,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:38,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094995792] [2022-11-25 18:03:38,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094995792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:38,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:38,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:03:38,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686488669] [2022-11-25 18:03:38,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:38,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:38,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:38,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:38,746 INFO L87 Difference]: Start difference. First operand 4821 states and 8054 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:03:41,540 INFO L93 Difference]: Finished difference Result 12284 states and 19516 transitions. [2022-11-25 18:03:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:03:41,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-11-25 18:03:41,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:03:41,613 INFO L225 Difference]: With dead ends: 12284 [2022-11-25 18:03:41,613 INFO L226 Difference]: Without dead ends: 9596 [2022-11-25 18:03:41,626 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 [2022-11-25 18:03:41,629 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 4626 mSDsluCounter, 16669 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4636 SdHoareTripleChecker+Valid, 20885 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:03:41,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4636 Valid, 20885 Invalid, 1719 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 18:03:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2022-11-25 18:03:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 7234. [2022-11-25 18:03:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7234 states, 6600 states have (on average 1.6234848484848485) internal successors, (10715), 6634 states have internal predecessors, (10715), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2022-11-25 18:03:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 11794 transitions. [2022-11-25 18:03:42,333 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 11794 transitions. Word has length 90 [2022-11-25 18:03:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:03:42,334 INFO L495 AbstractCegarLoop]: Abstraction has 7234 states and 11794 transitions. [2022-11-25 18:03:42,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 11794 transitions. [2022-11-25 18:03:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:42,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:42,340 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] [2022-11-25 18:03:42,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:03:42,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:42,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2022-11-25 18:03:42,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:42,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405865123] [2022-11-25 18:03:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:42,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:42,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:42,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:42,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405865123] [2022-11-25 18:03:42,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405865123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:42,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:42,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:03:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242044074] [2022-11-25 18:03:42,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:42,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:42,547 INFO L87 Difference]: Start difference. First operand 7234 states and 11794 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:03:46,268 INFO L93 Difference]: Finished difference Result 21183 states and 33370 transitions. [2022-11-25 18:03:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:03:46,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-11-25 18:03:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:03:46,355 INFO L225 Difference]: With dead ends: 21183 [2022-11-25 18:03:46,356 INFO L226 Difference]: Without dead ends: 16082 [2022-11-25 18:03:46,384 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 [2022-11-25 18:03:46,385 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 4689 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4705 SdHoareTripleChecker+Valid, 20889 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:03:46,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4705 Valid, 20889 Invalid, 1461 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 18:03:46,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2022-11-25 18:03:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 12123. [2022-11-25 18:03:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12123 states, 10913 states have (on average 1.5802254192247778) internal successors, (17245), 10979 states have internal predecessors, (17245), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2022-11-25 18:03:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 19546 transitions. [2022-11-25 18:03:47,653 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 19546 transitions. Word has length 90 [2022-11-25 18:03:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:03:47,654 INFO L495 AbstractCegarLoop]: Abstraction has 12123 states and 19546 transitions. [2022-11-25 18:03:47,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 19546 transitions. [2022-11-25 18:03:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:47,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:47,665 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] [2022-11-25 18:03:47,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:03:47,665 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:47,666 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2022-11-25 18:03:47,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:47,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600050569] [2022-11-25 18:03:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:47,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:47,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:47,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600050569] [2022-11-25 18:03:47,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600050569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:47,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:47,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:03:47,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023728185] [2022-11-25 18:03:47,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:47,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:47,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:47,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:47,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:47,837 INFO L87 Difference]: Start difference. First operand 12123 states and 19546 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:51,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:03:51,871 INFO L93 Difference]: Finished difference Result 38598 states and 61136 transitions. [2022-11-25 18:03:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:03:51,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-11-25 18:03:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:03:52,008 INFO L225 Difference]: With dead ends: 38598 [2022-11-25 18:03:52,008 INFO L226 Difference]: Without dead ends: 28608 [2022-11-25 18:03:52,053 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 [2022-11-25 18:03:52,053 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 4649 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 20889 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:03:52,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4665 Valid, 20889 Invalid, 1448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 18:03:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2022-11-25 18:03:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 21868. [2022-11-25 18:03:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21868 states, 19538 states have (on average 1.5526154161121917) internal successors, (30335), 19668 states have internal predecessors, (30335), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2022-11-25 18:03:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21868 states to 21868 states and 35502 transitions. [2022-11-25 18:03:54,559 INFO L78 Accepts]: Start accepts. Automaton has 21868 states and 35502 transitions. Word has length 90 [2022-11-25 18:03:54,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:03:54,559 INFO L495 AbstractCegarLoop]: Abstraction has 21868 states and 35502 transitions. [2022-11-25 18:03:54,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:03:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand 21868 states and 35502 transitions. [2022-11-25 18:03:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:03:54,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:03:54,578 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] [2022-11-25 18:03:54,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:03:54,578 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:03:54,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2022-11-25 18:03:54,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:54,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057859327] [2022-11-25 18:03:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:54,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:54,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:03:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:54,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:03:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:54,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:03:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:03:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:03:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:54,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:54,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057859327] [2022-11-25 18:03:54,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057859327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:54,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:54,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:03:54,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988434849] [2022-11-25 18:03:54,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:54,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:54,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:54,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:54,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:54,734 INFO L87 Difference]: Start difference. First operand 21868 states and 35502 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:04:01,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:01,090 INFO L93 Difference]: Finished difference Result 72173 states and 116654 transitions. [2022-11-25 18:04:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:04:01,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-11-25 18:04:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:01,334 INFO L225 Difference]: With dead ends: 72173 [2022-11-25 18:04:01,334 INFO L226 Difference]: Without dead ends: 52438 [2022-11-25 18:04:01,399 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 [2022-11-25 18:04:01,400 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 4591 mSDsluCounter, 16657 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 20867 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:01,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 20867 Invalid, 1525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 18:04:01,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2022-11-25 18:04:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 41269. [2022-11-25 18:04:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41269 states, 36779 states have (on average 1.5380787949645178) internal successors, (56569), 37037 states have internal predecessors, (56569), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2022-11-25 18:04:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41269 states to 41269 states and 68782 transitions. [2022-11-25 18:04:06,219 INFO L78 Accepts]: Start accepts. Automaton has 41269 states and 68782 transitions. Word has length 90 [2022-11-25 18:04:06,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:06,219 INFO L495 AbstractCegarLoop]: Abstraction has 41269 states and 68782 transitions. [2022-11-25 18:04:06,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-11-25 18:04:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand 41269 states and 68782 transitions. [2022-11-25 18:04:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 18:04:06,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:06,255 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] [2022-11-25 18:04:06,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:04:06,255 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:06,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:06,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2022-11-25 18:04:06,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:06,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217632696] [2022-11-25 18:04:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:06,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:06,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:04:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:04:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:06,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:04:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:06,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:04:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:04:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:04:06,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:06,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217632696] [2022-11-25 18:04:06,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217632696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:06,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:04:06,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:04:06,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714008849] [2022-11-25 18:04:06,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:06,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:04:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:06,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:04:06,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:04:06,575 INFO L87 Difference]: Start difference. First operand 41269 states and 68782 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-11-25 18:04:16,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:16,572 INFO L93 Difference]: Finished difference Result 113490 states and 185399 transitions. [2022-11-25 18:04:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:04:16,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-11-25 18:04:16,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:17,130 INFO L225 Difference]: With dead ends: 113490 [2022-11-25 18:04:17,131 INFO L226 Difference]: Without dead ends: 74355 [2022-11-25 18:04:17,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:04:17,281 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 4792 mSDsluCounter, 12412 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 16667 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:17,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4821 Valid, 16667 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 18:04:17,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74355 states. [2022-11-25 18:04:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74355 to 60660. [2022-11-25 18:04:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60660 states, 53846 states have (on average 1.5203729153511867) internal successors, (81866), 54361 states have internal predecessors, (81866), 4120 states have call successors, (4120), 2308 states have call predecessors, (4120), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2022-11-25 18:04:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60660 states to 60660 states and 99111 transitions. [2022-11-25 18:04:23,943 INFO L78 Accepts]: Start accepts. Automaton has 60660 states and 99111 transitions. Word has length 90 [2022-11-25 18:04:23,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:23,944 INFO L495 AbstractCegarLoop]: Abstraction has 60660 states and 99111 transitions. [2022-11-25 18:04:23,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-11-25 18:04:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 60660 states and 99111 transitions. [2022-11-25 18:04:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-25 18:04:24,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:24,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:04:24,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:04:24,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:04:24,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2022-11-25 18:04:24,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:24,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887601452] [2022-11-25 18:04:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:24,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:04:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:04:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 18:04:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:04:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:04:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 18:04:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-25 18:04:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:04:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 18:04:24,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:24,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887601452] [2022-11-25 18:04:24,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887601452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:04:24,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663932123] [2022-11-25 18:04:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:24,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:04:24,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:24,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:04:24,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6cd271-e609-4156-bcc5-689677bbcd54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:04:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:24,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:04:24,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:04:24,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:24,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663932123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:24,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:04:24,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-25 18:04:24,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303620129] [2022-11-25 18:04:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:24,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:04:24,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:24,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:04:24,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:04:24,666 INFO L87 Difference]: Start difference. First operand 60660 states and 99111 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)