./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:26:21,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:26:21,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:26:21,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:26:21,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:26:21,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:26:21,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:26:21,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:26:21,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:26:21,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:26:21,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:26:21,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:26:21,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:26:21,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:26:21,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:26:21,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:26:21,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:26:21,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:26:21,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:26:21,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:26:21,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:26:21,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:26:21,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:26:21,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:26:21,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:26:21,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:26:21,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:26:21,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:26:21,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:26:21,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:26:21,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:26:21,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:26:21,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:26:21,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:26:21,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:26:21,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:26:21,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:26:21,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:26:21,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:26:21,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:26:21,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:26:21,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:26:21,399 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:26:21,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:26:21,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:26:21,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:26:21,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:26:21,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:26:21,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:26:21,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:26:21,405 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:26:21,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:26:21,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:26:21,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:26:21,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:26:21,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:26:21,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:26:21,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:26:21,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:26:21,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:26:21,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:26:21,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:26:21,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:26:21,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:26:21,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:26:21,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:26:21,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:26:21,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:26:21,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:26:21,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:26:21,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:26:21,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:26:21,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:26:21,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:26:21,409 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:26:21,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:26:21,409 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:26:21,410 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_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 [2022-12-13 22:26:21,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:26:21,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:26:21,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:26:21,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:26:21,606 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:26:21,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2022-12-13 22:26:24,119 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:26:24,601 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:26:24,602 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2022-12-13 22:26:24,648 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/data/a46fa9cf1/88bfe0cbf18b4a6b818dc00cb1f113ff/FLAG0756da245 [2022-12-13 22:26:24,691 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/data/a46fa9cf1/88bfe0cbf18b4a6b818dc00cb1f113ff [2022-12-13 22:26:24,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:26:24,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:26:24,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:26:24,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:26:24,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:26:24,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:26:24" (1/1) ... [2022-12-13 22:26:24,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db5d1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:24, skipping insertion in model container [2022-12-13 22:26:24,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:26:24" (1/1) ... [2022-12-13 22:26:24,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:26:24,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:26:26,259 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_2ae5462e-1211-41e3-848e-7c1f81efba00/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2022-12-13 22:26:26,281 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_2ae5462e-1211-41e3-848e-7c1f81efba00/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2022-12-13 22:26:26,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:26:26,413 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:26:27,203 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_2ae5462e-1211-41e3-848e-7c1f81efba00/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2022-12-13 22:26:27,209 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_2ae5462e-1211-41e3-848e-7c1f81efba00/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2022-12-13 22:26:27,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:26:27,257 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:26:27,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27 WrapperNode [2022-12-13 22:26:27,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:26:27,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:26:27,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:26:27,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:26:27,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,545 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12682 [2022-12-13 22:26:27,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:26:27,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:26:27,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:26:27,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:26:27,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,749 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:26:27,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:26:27,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:26:27,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:26:27,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (1/1) ... [2022-12-13 22:26:27,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:26:27,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:26:27,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:26:27,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:26:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:26:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 22:26:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 22:26:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 22:26:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 22:26:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 22:26:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 22:26:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-13 22:26:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-13 22:26:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 22:26:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 22:26:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 22:26:27,857 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 22:26:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 22:26:27,857 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 22:26:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:26:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:26:27,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:26:27,937 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:26:27,938 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:26:33,516 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:26:33,540 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:26:33,540 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 22:26:33,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:26:33 BoogieIcfgContainer [2022-12-13 22:26:33,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:26:33,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:26:33,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:26:33,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:26:33,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:26:24" (1/3) ... [2022-12-13 22:26:33,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49588f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:26:33, skipping insertion in model container [2022-12-13 22:26:33,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:26:27" (2/3) ... [2022-12-13 22:26:33,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49588f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:26:33, skipping insertion in model container [2022-12-13 22:26:33,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:26:33" (3/3) ... [2022-12-13 22:26:33,551 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-1.c [2022-12-13 22:26:33,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:26:33,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 22:26:33,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:26:33,634 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;@4c560d72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:26:33,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 22:26:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 2348 states, 2319 states have (on average 1.8559724018973696) internal successors, (4304), 2324 states have internal predecessors, (4304), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 22:26:33,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 22:26:33,651 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:33,651 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] [2022-12-13 22:26:33,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash 520182233, now seen corresponding path program 1 times [2022-12-13 22:26:33,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:33,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427072177] [2022-12-13 22:26:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:33,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:33,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:26:33,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:33,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427072177] [2022-12-13 22:26:33,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427072177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:33,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:26:33,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:26:33,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47014193] [2022-12-13 22:26:33,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:33,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:26:33,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:26:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:26:34,009 INFO L87 Difference]: Start difference. First operand has 2348 states, 2319 states have (on average 1.8559724018973696) internal successors, (4304), 2324 states have internal predecessors, (4304), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:35,027 INFO L93 Difference]: Finished difference Result 4921 states and 9054 transitions. [2022-12-13 22:26:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 22:26:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-12-13 22:26:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:35,047 INFO L225 Difference]: With dead ends: 4921 [2022-12-13 22:26:35,047 INFO L226 Difference]: Without dead ends: 2514 [2022-12-13 22:26:35,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 22:26:35,055 INFO L413 NwaCegarLoop]: 4190 mSDtfsCounter, 4567 mSDsluCounter, 12506 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 16696 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:35,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4577 Valid, 16696 Invalid, 895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 22:26:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-12-13 22:26:35,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2427. [2022-12-13 22:26:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2381 states have (on average 1.8299034019319613) internal successors, (4357), 2385 states have internal predecessors, (4357), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-12-13 22:26:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4420 transitions. [2022-12-13 22:26:35,152 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4420 transitions. Word has length 80 [2022-12-13 22:26:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:35,152 INFO L495 AbstractCegarLoop]: Abstraction has 2427 states and 4420 transitions. [2022-12-13 22:26:35,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4420 transitions. [2022-12-13 22:26:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 22:26:35,155 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:35,155 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] [2022-12-13 22:26:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:26:35,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash -721258283, now seen corresponding path program 1 times [2022-12-13 22:26:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:35,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965554276] [2022-12-13 22:26:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:35,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:35,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:26:35,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:35,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965554276] [2022-12-13 22:26:35,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965554276] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:35,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:26:35,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:26:35,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145028912] [2022-12-13 22:26:35,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:35,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:26:35,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:35,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:26:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:26:35,308 INFO L87 Difference]: Start difference. First operand 2427 states and 4420 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:36,318 INFO L93 Difference]: Finished difference Result 3000 states and 5300 transitions. [2022-12-13 22:26:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:26:36,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-12-13 22:26:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:36,327 INFO L225 Difference]: With dead ends: 3000 [2022-12-13 22:26:36,327 INFO L226 Difference]: Without dead ends: 2705 [2022-12-13 22:26:36,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:26:36,330 INFO L413 NwaCegarLoop]: 4208 mSDtfsCounter, 4495 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4505 SdHoareTripleChecker+Valid, 20846 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:36,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4505 Valid, 20846 Invalid, 1288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 22:26:36,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-12-13 22:26:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2565. [2022-12-13 22:26:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2500 states have (on average 1.8144) internal successors, (4536), 2505 states have internal predecessors, (4536), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-12-13 22:26:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 4625 transitions. [2022-12-13 22:26:36,382 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 4625 transitions. Word has length 80 [2022-12-13 22:26:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:36,383 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 4625 transitions. [2022-12-13 22:26:36,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:36,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 4625 transitions. [2022-12-13 22:26:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 22:26:36,385 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:36,385 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] [2022-12-13 22:26:36,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:26:36,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1887529175, now seen corresponding path program 1 times [2022-12-13 22:26:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:36,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060730469] [2022-12-13 22:26:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:26:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:36,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060730469] [2022-12-13 22:26:36,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060730469] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:36,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:26:36,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:26:36,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59925629] [2022-12-13 22:26:36,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:36,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:26:36,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:36,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:26:36,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:26:36,511 INFO L87 Difference]: Start difference. First operand 2565 states and 4625 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:37,588 INFO L93 Difference]: Finished difference Result 3497 states and 6053 transitions. [2022-12-13 22:26:37,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:26:37,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-12-13 22:26:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:37,597 INFO L225 Difference]: With dead ends: 3497 [2022-12-13 22:26:37,597 INFO L226 Difference]: Without dead ends: 3064 [2022-12-13 22:26:37,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:26:37,600 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4493 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 20844 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:37,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 20844 Invalid, 1286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 22:26:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2022-12-13 22:26:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 2842. [2022-12-13 22:26:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2739 states have (on average 1.78714859437751) internal successors, (4895), 2746 states have internal predecessors, (4895), 67 states have call successors, (67), 31 states have call predecessors, (67), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-12-13 22:26:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 5040 transitions. [2022-12-13 22:26:37,664 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 5040 transitions. Word has length 80 [2022-12-13 22:26:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:37,665 INFO L495 AbstractCegarLoop]: Abstraction has 2842 states and 5040 transitions. [2022-12-13 22:26:37,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 5040 transitions. [2022-12-13 22:26:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 22:26:37,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:37,668 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] [2022-12-13 22:26:37,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:26:37,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1833136277, now seen corresponding path program 1 times [2022-12-13 22:26:37,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:37,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137760604] [2022-12-13 22:26:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:37,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:26:37,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:37,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137760604] [2022-12-13 22:26:37,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137760604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:37,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:26:37,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:26:37,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621453023] [2022-12-13 22:26:37,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:37,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:26:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:37,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:26:37,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:26:37,793 INFO L87 Difference]: Start difference. First operand 2842 states and 5040 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:38,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:38,694 INFO L93 Difference]: Finished difference Result 4458 states and 7508 transitions. [2022-12-13 22:26:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:26:38,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-12-13 22:26:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:38,704 INFO L225 Difference]: With dead ends: 4458 [2022-12-13 22:26:38,704 INFO L226 Difference]: Without dead ends: 3748 [2022-12-13 22:26:38,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:26:38,707 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4489 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4499 SdHoareTripleChecker+Valid, 20844 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:38,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4499 Valid, 20844 Invalid, 1277 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 22:26:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-12-13 22:26:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3397. [2022-12-13 22:26:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3218 states have (on average 1.7442510876320696) internal successors, (5613), 3229 states have internal predecessors, (5613), 115 states have call successors, (115), 55 states have call predecessors, (115), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-12-13 22:26:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 5876 transitions. [2022-12-13 22:26:38,797 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 5876 transitions. Word has length 80 [2022-12-13 22:26:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:38,797 INFO L495 AbstractCegarLoop]: Abstraction has 3397 states and 5876 transitions. [2022-12-13 22:26:38,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:38,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 5876 transitions. [2022-12-13 22:26:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 22:26:38,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:38,799 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] [2022-12-13 22:26:38,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:26:38,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:38,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:38,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1415739671, now seen corresponding path program 1 times [2022-12-13 22:26:38,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:38,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731964596] [2022-12-13 22:26:38,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:38,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:26:38,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:38,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731964596] [2022-12-13 22:26:38,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731964596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:38,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:26:38,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:26:38,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319626501] [2022-12-13 22:26:38,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:38,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:26:38,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:26:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:26:38,897 INFO L87 Difference]: Start difference. First operand 3397 states and 5876 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:39,904 INFO L93 Difference]: Finished difference Result 6787 states and 11028 transitions. [2022-12-13 22:26:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:26:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-12-13 22:26:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:39,920 INFO L225 Difference]: With dead ends: 6787 [2022-12-13 22:26:39,920 INFO L226 Difference]: Without dead ends: 5522 [2022-12-13 22:26:39,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 22:26:39,924 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4620 mSDsluCounter, 16630 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4634 SdHoareTripleChecker+Valid, 20834 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:39,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4634 Valid, 20834 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 22:26:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2022-12-13 22:26:40,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 4488. [2022-12-13 22:26:40,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4165 states have (on average 1.6900360144057622) internal successors, (7039), 4184 states have internal predecessors, (7039), 203 states have call successors, (203), 103 states have call predecessors, (203), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-12-13 22:26:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 7540 transitions. [2022-12-13 22:26:40,067 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 7540 transitions. Word has length 80 [2022-12-13 22:26:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:40,067 INFO L495 AbstractCegarLoop]: Abstraction has 4488 states and 7540 transitions. [2022-12-13 22:26:40,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 7540 transitions. [2022-12-13 22:26:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 22:26:40,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:40,070 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] [2022-12-13 22:26:40,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:26:40,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2095011925, now seen corresponding path program 1 times [2022-12-13 22:26:40,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:40,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895278248] [2022-12-13 22:26:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:26:40,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:40,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895278248] [2022-12-13 22:26:40,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895278248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:40,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:26:40,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:26:40,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673452717] [2022-12-13 22:26:40,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:40,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:26:40,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:40,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:26:40,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:26:40,182 INFO L87 Difference]: Start difference. First operand 4488 states and 7540 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:41,549 INFO L93 Difference]: Finished difference Result 10772 states and 17130 transitions. [2022-12-13 22:26:41,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:26:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-12-13 22:26:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:41,576 INFO L225 Difference]: With dead ends: 10772 [2022-12-13 22:26:41,576 INFO L226 Difference]: Without dead ends: 8416 [2022-12-13 22:26:41,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 22:26:41,584 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4509 mSDsluCounter, 16627 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4518 SdHoareTripleChecker+Valid, 20830 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:41,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4518 Valid, 20830 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 22:26:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2022-12-13 22:26:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 6499. [2022-12-13 22:26:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6499 states, 5896 states have (on average 1.6290705563093624) internal successors, (9605), 5931 states have internal predecessors, (9605), 371 states have call successors, (371), 199 states have call predecessors, (371), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-12-13 22:26:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 10620 transitions. [2022-12-13 22:26:41,892 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 10620 transitions. Word has length 80 [2022-12-13 22:26:41,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:41,893 INFO L495 AbstractCegarLoop]: Abstraction has 6499 states and 10620 transitions. [2022-12-13 22:26:41,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 10620 transitions. [2022-12-13 22:26:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 22:26:41,898 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:41,898 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] [2022-12-13 22:26:41,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:26:41,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash -238380713, now seen corresponding path program 1 times [2022-12-13 22:26:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:41,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864807275] [2022-12-13 22:26:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:41,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:42,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:26:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:42,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864807275] [2022-12-13 22:26:42,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864807275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:42,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:26:42,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:26:42,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335200355] [2022-12-13 22:26:42,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:42,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:26:42,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:42,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:26:42,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:26:42,017 INFO L87 Difference]: Start difference. First operand 6499 states and 10620 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:43,377 INFO L93 Difference]: Finished difference Result 17486 states and 27496 transitions. [2022-12-13 22:26:43,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:26:43,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-12-13 22:26:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:43,411 INFO L225 Difference]: With dead ends: 17486 [2022-12-13 22:26:43,411 INFO L226 Difference]: Without dead ends: 13119 [2022-12-13 22:26:43,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 22:26:43,421 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4498 mSDsluCounter, 16630 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4512 SdHoareTripleChecker+Valid, 20834 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:43,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4512 Valid, 20834 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 22:26:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13119 states. [2022-12-13 22:26:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13119 to 10695. [2022-12-13 22:26:44,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10695 states, 9548 states have (on average 1.581587767071638) internal successors, (15101), 9615 states have internal predecessors, (15101), 691 states have call successors, (691), 391 states have call predecessors, (691), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-12-13 22:26:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10695 states to 10695 states and 17274 transitions. [2022-12-13 22:26:44,053 INFO L78 Accepts]: Start accepts. Automaton has 10695 states and 17274 transitions. Word has length 80 [2022-12-13 22:26:44,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:44,053 INFO L495 AbstractCegarLoop]: Abstraction has 10695 states and 17274 transitions. [2022-12-13 22:26:44,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 10695 states and 17274 transitions. [2022-12-13 22:26:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 22:26:44,061 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:44,061 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] [2022-12-13 22:26:44,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:26:44,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:44,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash 322319065, now seen corresponding path program 1 times [2022-12-13 22:26:44,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:44,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473412304] [2022-12-13 22:26:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:44,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:44,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:44,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:26:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:44,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473412304] [2022-12-13 22:26:44,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473412304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:44,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:26:44,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:26:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496156386] [2022-12-13 22:26:44,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:44,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:26:44,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:44,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:26:44,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:26:44,148 INFO L87 Difference]: Start difference. First operand 10695 states and 17274 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:45,747 INFO L93 Difference]: Finished difference Result 26313 states and 41362 transitions. [2022-12-13 22:26:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 22:26:45,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-12-13 22:26:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:45,785 INFO L225 Difference]: With dead ends: 26313 [2022-12-13 22:26:45,786 INFO L226 Difference]: Without dead ends: 17751 [2022-12-13 22:26:45,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:26:45,802 INFO L413 NwaCegarLoop]: 4225 mSDtfsCounter, 4662 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4689 SdHoareTripleChecker+Valid, 16580 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:45,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4689 Valid, 16580 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 22:26:45,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17751 states. [2022-12-13 22:26:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17751 to 14888. [2022-12-13 22:26:46,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14888 states, 13146 states have (on average 1.5442720219078045) internal successors, (20301), 13278 states have internal predecessors, (20301), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-12-13 22:26:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14888 states to 14888 states and 23448 transitions. [2022-12-13 22:26:46,632 INFO L78 Accepts]: Start accepts. Automaton has 14888 states and 23448 transitions. Word has length 80 [2022-12-13 22:26:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:46,633 INFO L495 AbstractCegarLoop]: Abstraction has 14888 states and 23448 transitions. [2022-12-13 22:26:46,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 22:26:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 14888 states and 23448 transitions. [2022-12-13 22:26:46,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 22:26:46,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:46,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:26:46,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:26:46,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:46,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:46,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2072406432, now seen corresponding path program 1 times [2022-12-13 22:26:46,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:46,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471528681] [2022-12-13 22:26:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:46,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:26:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:26:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 22:26:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 22:26:46,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:46,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471528681] [2022-12-13 22:26:46,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471528681] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:26:46,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446321289] [2022-12-13 22:26:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:46,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:26:46,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:26:46,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:26:46,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:26:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:46,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:26:46,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:26:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 22:26:46,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:26:46,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446321289] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:46,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:26:46,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 22:26:46,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982624344] [2022-12-13 22:26:46,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:26:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:46,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:26:46,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:26:46,956 INFO L87 Difference]: Start difference. First operand 14888 states and 23448 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 22:26:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:48,120 INFO L93 Difference]: Finished difference Result 40051 states and 62244 transitions. [2022-12-13 22:26:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:26:48,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-12-13 22:26:48,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:48,187 INFO L225 Difference]: With dead ends: 40051 [2022-12-13 22:26:48,187 INFO L226 Difference]: Without dead ends: 27296 [2022-12-13 22:26:48,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:26:48,215 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4148 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4148 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:48,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4148 Valid, 4414 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:26:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27296 states. [2022-12-13 22:26:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27296 to 27096. [2022-12-13 22:26:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27096 states, 23670 states have (on average 1.514321926489227) internal successors, (35844), 23931 states have internal predecessors, (35844), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-12-13 22:26:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27096 states to 27096 states and 41965 transitions. [2022-12-13 22:26:49,671 INFO L78 Accepts]: Start accepts. Automaton has 27096 states and 41965 transitions. Word has length 129 [2022-12-13 22:26:49,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:49,671 INFO L495 AbstractCegarLoop]: Abstraction has 27096 states and 41965 transitions. [2022-12-13 22:26:49,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 22:26:49,671 INFO L276 IsEmpty]: Start isEmpty. Operand 27096 states and 41965 transitions. [2022-12-13 22:26:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 22:26:49,700 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:49,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:26:49,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:26:49,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:26:49,901 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash -853257536, now seen corresponding path program 1 times [2022-12-13 22:26:49,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:49,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744174214] [2022-12-13 22:26:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:49,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:49,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:49,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:50,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:50,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:26:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:26:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:50,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 22:26:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 22:26:50,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:50,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744174214] [2022-12-13 22:26:50,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744174214] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:26:50,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978828550] [2022-12-13 22:26:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:50,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:26:50,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:26:50,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:26:50,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:26:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:50,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:26:50,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:26:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 22:26:50,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:26:50,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978828550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:50,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:26:50,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 22:26:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006473960] [2022-12-13 22:26:50,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:50,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:26:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:26:50,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:26:50,194 INFO L87 Difference]: Start difference. First operand 27096 states and 41965 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 22:26:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:52,648 INFO L93 Difference]: Finished difference Result 76329 states and 117663 transitions. [2022-12-13 22:26:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:26:52,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-12-13 22:26:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:52,765 INFO L225 Difference]: With dead ends: 76329 [2022-12-13 22:26:52,766 INFO L226 Difference]: Without dead ends: 51366 [2022-12-13 22:26:52,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:26:52,806 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4142 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4142 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:52,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4142 Valid, 4414 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:26:52,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51366 states. [2022-12-13 22:26:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51366 to 50970. [2022-12-13 22:26:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50970 states, 44226 states have (on average 1.4955908289241622) internal successors, (66144), 44745 states have internal predecessors, (66144), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-12-13 22:26:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50970 states to 50970 states and 78113 transitions. [2022-12-13 22:26:55,285 INFO L78 Accepts]: Start accepts. Automaton has 50970 states and 78113 transitions. Word has length 129 [2022-12-13 22:26:55,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:55,286 INFO L495 AbstractCegarLoop]: Abstraction has 50970 states and 78113 transitions. [2022-12-13 22:26:55,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 22:26:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 50970 states and 78113 transitions. [2022-12-13 22:26:55,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 22:26:55,332 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:55,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:26:55,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 22:26:55,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:26:55,533 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:26:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2127588384, now seen corresponding path program 1 times [2022-12-13 22:26:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:55,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409159433] [2022-12-13 22:26:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:55,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:26:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:26:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:26:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:26:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:26:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:26:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:26:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 22:26:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 22:26:55,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:55,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409159433] [2022-12-13 22:26:55,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409159433] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:26:55,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477326392] [2022-12-13 22:26:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:55,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:26:55,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:26:55,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:26:55,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:26:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:26:55,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:26:55,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:26:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 22:26:55,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:26:55,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477326392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:26:55,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:26:55,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:26:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503860380] [2022-12-13 22:26:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:26:55,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:26:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:26:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:26:55,762 INFO L87 Difference]: Start difference. First operand 50970 states and 78113 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 22:27:00,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:27:00,430 INFO L93 Difference]: Finished difference Result 146009 states and 224673 transitions. [2022-12-13 22:27:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:27:00,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2022-12-13 22:27:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:27:00,726 INFO L225 Difference]: With dead ends: 146009 [2022-12-13 22:27:00,726 INFO L226 Difference]: Without dead ends: 97173 [2022-12-13 22:27:00,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:27:00,823 INFO L413 NwaCegarLoop]: 4394 mSDtfsCounter, 194 mSDsluCounter, 4192 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8586 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:27:00,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8586 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:27:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97173 states. [2022-12-13 22:27:06,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97173 to 97173. [2022-12-13 22:27:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97173 states, 83954 states have (on average 1.4752245277175595) internal successors, (123851), 84858 states have internal predecessors, (123851), 7745 states have call successors, (7745), 4705 states have call predecessors, (7745), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-12-13 22:27:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97173 states to 97173 states and 148642 transitions. [2022-12-13 22:27:06,366 INFO L78 Accepts]: Start accepts. Automaton has 97173 states and 148642 transitions. Word has length 129 [2022-12-13 22:27:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:27:06,366 INFO L495 AbstractCegarLoop]: Abstraction has 97173 states and 148642 transitions. [2022-12-13 22:27:06,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 22:27:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 97173 states and 148642 transitions. [2022-12-13 22:27:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 22:27:06,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:27:06,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2022-12-13 22:27:06,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 22:27:06,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 22:27:06,740 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:27:06,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:27:06,741 INFO L85 PathProgramCache]: Analyzing trace with hash -318020336, now seen corresponding path program 1 times [2022-12-13 22:27:06,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:27:06,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45698975] [2022-12-13 22:27:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:27:06,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:27:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:27:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:27:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:27:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:27:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:27:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:27:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:27:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 22:27:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:27:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 22:27:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 22:27:06,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:27:06,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45698975] [2022-12-13 22:27:06,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45698975] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:27:06,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413050637] [2022-12-13 22:27:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:27:06,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:27:06,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:27:06,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:27:06,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:27:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:06,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:27:06,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:27:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 22:27:07,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:27:07,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413050637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:27:07,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:27:07,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 22:27:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227856215] [2022-12-13 22:27:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:27:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:27:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:27:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:27:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:27:07,078 INFO L87 Difference]: Start difference. First operand 97173 states and 148642 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 22:27:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:27:15,908 INFO L93 Difference]: Finished difference Result 282449 states and 433585 transitions. [2022-12-13 22:27:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:27:15,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 167 [2022-12-13 22:27:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:27:16,462 INFO L225 Difference]: With dead ends: 282449 [2022-12-13 22:27:16,462 INFO L226 Difference]: Without dead ends: 187415 [2022-12-13 22:27:16,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:27:16,668 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4098 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:27:16,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4417 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:27:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187415 states. [2022-12-13 22:27:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187415 to 185843. [2022-12-13 22:27:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185843 states, 160780 states have (on average 1.4701890782435627) internal successors, (236377), 162584 states have internal predecessors, (236377), 14407 states have call successors, (14407), 9119 states have call predecessors, (14407), 10654 states have return successors, (32274), 14267 states have call predecessors, (32274), 14405 states have call successors, (32274) [2022-12-13 22:27:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185843 states to 185843 states and 283058 transitions. [2022-12-13 22:27:26,406 INFO L78 Accepts]: Start accepts. Automaton has 185843 states and 283058 transitions. Word has length 167 [2022-12-13 22:27:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:27:26,406 INFO L495 AbstractCegarLoop]: Abstraction has 185843 states and 283058 transitions. [2022-12-13 22:27:26,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 22:27:26,407 INFO L276 IsEmpty]: Start isEmpty. Operand 185843 states and 283058 transitions. [2022-12-13 22:27:26,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 22:27:26,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:27:26,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2022-12-13 22:27:26,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:27:27,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 22:27:27,046 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:27:27,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:27:27,047 INFO L85 PathProgramCache]: Analyzing trace with hash 159535236, now seen corresponding path program 1 times [2022-12-13 22:27:27,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:27:27,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711884095] [2022-12-13 22:27:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:27:27,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:27:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:27:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:27:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:27:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:27:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:27:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 22:27:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 22:27:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:27:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 22:27:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:27:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 22:27:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 22:27:27,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:27:27,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711884095] [2022-12-13 22:27:27,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711884095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:27:27,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114395742] [2022-12-13 22:27:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:27:27,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:27:27,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:27:27,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:27:27,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:27:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:27,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:27:27,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:27:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 22:27:27,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:27:27,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114395742] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:27:27,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:27:27,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:27:27,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717996731] [2022-12-13 22:27:27,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:27:27,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:27:27,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:27:27,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:27:27,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:27:27,389 INFO L87 Difference]: Start difference. First operand 185843 states and 283058 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 22:27:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:27:36,652 INFO L93 Difference]: Finished difference Result 281665 states and 429487 transitions. [2022-12-13 22:27:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:27:36,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 185 [2022-12-13 22:27:36,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:27:37,062 INFO L225 Difference]: With dead ends: 281665 [2022-12-13 22:27:37,063 INFO L226 Difference]: Without dead ends: 156075 [2022-12-13 22:27:37,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:27:37,270 INFO L413 NwaCegarLoop]: 4190 mSDtfsCounter, 4120 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4120 SdHoareTripleChecker+Valid, 4234 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:27:37,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4120 Valid, 4234 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:27:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156075 states. [2022-12-13 22:27:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156075 to 110403. [2022-12-13 22:27:44,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110403 states, 96060 states have (on average 1.4239954195294608) internal successors, (136789), 96972 states have internal predecessors, (136789), 8075 states have call successors, (8075), 5499 states have call predecessors, (8075), 6266 states have return successors, (14714), 7995 states have call predecessors, (14714), 8073 states have call successors, (14714) [2022-12-13 22:27:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110403 states to 110403 states and 159578 transitions. [2022-12-13 22:27:44,932 INFO L78 Accepts]: Start accepts. Automaton has 110403 states and 159578 transitions. Word has length 185 [2022-12-13 22:27:44,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:27:44,933 INFO L495 AbstractCegarLoop]: Abstraction has 110403 states and 159578 transitions. [2022-12-13 22:27:44,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 22:27:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 110403 states and 159578 transitions. [2022-12-13 22:27:45,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 22:27:45,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:27:45,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 22:27:45,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:27:45,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:27:45,311 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:27:45,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:27:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash 644317989, now seen corresponding path program 1 times [2022-12-13 22:27:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:27:45,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946219025] [2022-12-13 22:27:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:27:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:27:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:27:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:27:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:27:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:27:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:27:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 22:27:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 22:27:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:27:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 22:27:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:27:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 22:27:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 22:27:45,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:27:45,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946219025] [2022-12-13 22:27:45,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946219025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:27:45,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103861800] [2022-12-13 22:27:45,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:27:45,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:27:45,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:27:45,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:27:45,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:27:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:45,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:27:45,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:27:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 22:27:45,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:27:45,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103861800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:27:45,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:27:45,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:27:45,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366371191] [2022-12-13 22:27:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:27:45,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:27:45,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:27:45,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:27:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:27:45,591 INFO L87 Difference]: Start difference. First operand 110403 states and 159578 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 22:27:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:27:56,123 INFO L93 Difference]: Finished difference Result 255335 states and 380278 transitions. [2022-12-13 22:27:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:27:56,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 185 [2022-12-13 22:27:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:27:56,539 INFO L225 Difference]: With dead ends: 255335 [2022-12-13 22:27:56,539 INFO L226 Difference]: Without dead ends: 147073 [2022-12-13 22:27:56,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:27:56,721 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 4143 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4143 SdHoareTripleChecker+Valid, 4266 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:27:56,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4143 Valid, 4266 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:27:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147073 states. [2022-12-13 22:28:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147073 to 146741. [2022-12-13 22:28:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146741 states, 128710 states have (on average 1.403146608655116) internal successors, (180599), 129622 states have internal predecessors, (180599), 9921 states have call successors, (9921), 7341 states have call predecessors, (9921), 8108 states have return successors, (24231), 9841 states have call predecessors, (24231), 9919 states have call successors, (24231) [2022-12-13 22:28:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146741 states to 146741 states and 214751 transitions. [2022-12-13 22:28:07,702 INFO L78 Accepts]: Start accepts. Automaton has 146741 states and 214751 transitions. Word has length 185 [2022-12-13 22:28:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:07,702 INFO L495 AbstractCegarLoop]: Abstraction has 146741 states and 214751 transitions. [2022-12-13 22:28:07,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 22:28:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 146741 states and 214751 transitions. [2022-12-13 22:28:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 22:28:07,991 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:07,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 22:28:07,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 22:28:08,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:28:08,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:28:08,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:08,194 INFO L85 PathProgramCache]: Analyzing trace with hash 546620963, now seen corresponding path program 1 times [2022-12-13 22:28:08,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:08,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654671618] [2022-12-13 22:28:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:08,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:28:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:28:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:28:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:28:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:28:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 22:28:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 22:28:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:28:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 22:28:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:28:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 22:28:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 22:28:08,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:08,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654671618] [2022-12-13 22:28:08,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654671618] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:28:08,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211558807] [2022-12-13 22:28:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:08,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:28:08,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:28:08,325 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:28:08,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:28:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:08,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:28:08,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:28:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 22:28:08,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:28:08,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211558807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:08,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:28:08,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:28:08,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947890496] [2022-12-13 22:28:08,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:28:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:28:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:28:08,465 INFO L87 Difference]: Start difference. First operand 146741 states and 214751 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 22:28:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:19,861 INFO L93 Difference]: Finished difference Result 252545 states and 366862 transitions. [2022-12-13 22:28:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:28:19,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2022-12-13 22:28:19,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:20,284 INFO L225 Difference]: With dead ends: 252545 [2022-12-13 22:28:20,284 INFO L226 Difference]: Without dead ends: 154129 [2022-12-13 22:28:20,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:28:20,433 INFO L413 NwaCegarLoop]: 4211 mSDtfsCounter, 4119 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4119 SdHoareTripleChecker+Valid, 4429 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:20,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4119 Valid, 4429 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154129 states. [2022-12-13 22:28:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154129 to 153645. [2022-12-13 22:28:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153645 states, 135150 states have (on average 1.3832852386237513) internal successors, (186951), 136062 states have internal predecessors, (186951), 9997 states have call successors, (9997), 7697 states have call predecessors, (9997), 8496 states have return successors, (24695), 9949 states have call predecessors, (24695), 9995 states have call successors, (24695) [2022-12-13 22:28:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153645 states to 153645 states and 221643 transitions. [2022-12-13 22:28:32,599 INFO L78 Accepts]: Start accepts. Automaton has 153645 states and 221643 transitions. Word has length 185 [2022-12-13 22:28:32,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:32,600 INFO L495 AbstractCegarLoop]: Abstraction has 153645 states and 221643 transitions. [2022-12-13 22:28:32,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 22:28:32,600 INFO L276 IsEmpty]: Start isEmpty. Operand 153645 states and 221643 transitions. [2022-12-13 22:28:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-13 22:28:32,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:32,882 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 22:28:32,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 22:28:33,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 22:28:33,083 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:28:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1824924710, now seen corresponding path program 1 times [2022-12-13 22:28:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:33,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089337296] [2022-12-13 22:28:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:28:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:28:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:28:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:28:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:28:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:28:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:28:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 22:28:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 22:28:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:28:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 22:28:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 22:28:33,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:33,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089337296] [2022-12-13 22:28:33,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089337296] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:28:33,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676565288] [2022-12-13 22:28:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:33,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:28:33,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:28:33,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:28:33,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 22:28:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:33,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:28:33,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:28:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 22:28:33,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:28:33,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676565288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:33,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:28:33,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:28:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646942074] [2022-12-13 22:28:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:33,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:28:33,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:33,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:28:33,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:28:33,336 INFO L87 Difference]: Start difference. First operand 153645 states and 221643 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 22:28:56,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:56,087 INFO L93 Difference]: Finished difference Result 451983 states and 657775 transitions. [2022-12-13 22:28:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:28:56,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 186 [2022-12-13 22:28:56,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:57,267 INFO L225 Difference]: With dead ends: 451983 [2022-12-13 22:28:57,267 INFO L226 Difference]: Without dead ends: 300483 [2022-12-13 22:28:57,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:28:57,609 INFO L413 NwaCegarLoop]: 4401 mSDtfsCounter, 193 mSDsluCounter, 4188 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 8589 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:57,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 8589 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:28:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300483 states. [2022-12-13 22:29:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300483 to 300263. [2022-12-13 22:29:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300263 states, 263888 states have (on average 1.3732454677742072) internal successors, (362383), 265710 states have internal predecessors, (362383), 19559 states have call successors, (19559), 15177 states have call predecessors, (19559), 16814 states have return successors, (55635), 19503 states have call predecessors, (55635), 19557 states have call successors, (55635) [2022-12-13 22:29:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300263 states to 300263 states and 437577 transitions. [2022-12-13 22:29:22,469 INFO L78 Accepts]: Start accepts. Automaton has 300263 states and 437577 transitions. Word has length 186 [2022-12-13 22:29:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:29:22,470 INFO L495 AbstractCegarLoop]: Abstraction has 300263 states and 437577 transitions. [2022-12-13 22:29:22,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 22:29:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 300263 states and 437577 transitions. [2022-12-13 22:29:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-13 22:29:23,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:29:23,292 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2022-12-13 22:29:23,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 22:29:23,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 22:29:23,494 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:29:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:29:23,495 INFO L85 PathProgramCache]: Analyzing trace with hash 23091176, now seen corresponding path program 1 times [2022-12-13 22:29:23,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:29:23,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788415794] [2022-12-13 22:29:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:29:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:29:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:29:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:29:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:29:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:29:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:29:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:29:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:29:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 22:29:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 22:29:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:29:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 22:29:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-13 22:29:23,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:29:23,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788415794] [2022-12-13 22:29:23,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788415794] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:29:23,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507175601] [2022-12-13 22:29:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:29:23,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:29:23,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:29:23,631 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:29:23,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 22:29:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:23,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:29:23,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:29:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 22:29:23,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:29:23,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507175601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:29:23,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:29:23,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:29:23,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855998418] [2022-12-13 22:29:23,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:29:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:29:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:29:23,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:29:23,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:29:23,799 INFO L87 Difference]: Start difference. First operand 300263 states and 437577 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 22:29:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:29:44,461 INFO L93 Difference]: Finished difference Result 477303 states and 708328 transitions. [2022-12-13 22:29:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:29:44,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 186 [2022-12-13 22:29:44,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:29:45,231 INFO L225 Difference]: With dead ends: 477303 [2022-12-13 22:29:45,232 INFO L226 Difference]: Without dead ends: 241823 [2022-12-13 22:29:45,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:29:45,835 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4115 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4115 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:29:45,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4115 Valid, 4228 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:29:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241823 states. [2022-12-13 22:30:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241823 to 214127. [2022-12-13 22:30:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214127 states, 188418 states have (on average 1.3365442792089928) internal successors, (251829), 189668 states have internal predecessors, (251829), 13751 states have call successors, (13751), 10825 states have call predecessors, (13751), 11956 states have return successors, (34211), 13697 states have call predecessors, (34211), 13749 states have call successors, (34211) [2022-12-13 22:30:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214127 states to 214127 states and 299791 transitions. [2022-12-13 22:30:04,657 INFO L78 Accepts]: Start accepts. Automaton has 214127 states and 299791 transitions. Word has length 186 [2022-12-13 22:30:04,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:04,658 INFO L495 AbstractCegarLoop]: Abstraction has 214127 states and 299791 transitions. [2022-12-13 22:30:04,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 22:30:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 214127 states and 299791 transitions. [2022-12-13 22:30:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-13 22:30:04,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:04,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2022-12-13 22:30:04,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 22:30:05,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 22:30:05,136 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1383089109, now seen corresponding path program 1 times [2022-12-13 22:30:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:05,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905160749] [2022-12-13 22:30:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:05,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:30:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:30:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:30:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:30:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:30:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:30:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:30:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 22:30:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 22:30:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:30:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 22:30:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 22:30:05,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:05,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905160749] [2022-12-13 22:30:05,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905160749] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:30:05,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572078090] [2022-12-13 22:30:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:05,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:05,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:30:05,264 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:30:05,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 22:30:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:05,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:30:05,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 22:30:05,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:30:05,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572078090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:30:05,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:30:05,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:30:05,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261435537] [2022-12-13 22:30:05,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:30:05,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:30:05,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:30:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:30:05,389 INFO L87 Difference]: Start difference. First operand 214127 states and 299791 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 22:30:37,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:37,585 INFO L93 Difference]: Finished difference Result 613783 states and 873393 transitions. [2022-12-13 22:30:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:30:37,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 186 [2022-12-13 22:30:37,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:39,180 INFO L225 Difference]: With dead ends: 613783 [2022-12-13 22:30:39,180 INFO L226 Difference]: Without dead ends: 401815 [2022-12-13 22:30:39,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:30:39,549 INFO L413 NwaCegarLoop]: 4393 mSDtfsCounter, 187 mSDsluCounter, 4185 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 8578 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:39,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 8578 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:30:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401815 states. [2022-12-13 22:31:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401815 to 401811. [2022-12-13 22:31:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401811 states, 352638 states have (on average 1.330239509071626) internal successors, (469093), 355136 states have internal predecessors, (469093), 26379 states have call successors, (26379), 20529 states have call predecessors, (26379), 22792 states have return successors, (78879), 26273 states have call predecessors, (78879), 26377 states have call successors, (78879) [2022-12-13 22:31:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401811 states to 401811 states and 574351 transitions. [2022-12-13 22:31:14,752 INFO L78 Accepts]: Start accepts. Automaton has 401811 states and 574351 transitions. Word has length 186 [2022-12-13 22:31:14,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:31:14,753 INFO L495 AbstractCegarLoop]: Abstraction has 401811 states and 574351 transitions. [2022-12-13 22:31:14,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 22:31:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 401811 states and 574351 transitions. [2022-12-13 22:31:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-13 22:31:15,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:31:15,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 22:31:15,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 22:31:15,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 22:31:15,612 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:31:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:31:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash -397316436, now seen corresponding path program 1 times [2022-12-13 22:31:15,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:31:15,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125150480] [2022-12-13 22:31:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:31:15,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:31:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:31:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:31:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:31:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:31:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:31:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:31:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:31:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 22:31:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 22:31:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:31:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 22:31:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 22:31:15,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:31:15,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125150480] [2022-12-13 22:31:15,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125150480] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:31:15,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077010536] [2022-12-13 22:31:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:31:15,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:31:15,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:31:15,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:31:15,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 22:31:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:15,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:31:15,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:31:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 22:31:15,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:31:15,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077010536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:31:15,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:31:15,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:31:15,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998277973] [2022-12-13 22:31:15,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:31:15,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:31:15,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:31:15,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:31:15,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:31:15,799 INFO L87 Difference]: Start difference. First operand 401811 states and 574351 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 22:32:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:32:21,387 INFO L93 Difference]: Finished difference Result 1184081 states and 1716081 transitions. [2022-12-13 22:32:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:32:21,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 186 [2022-12-13 22:32:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:32:24,369 INFO L225 Difference]: With dead ends: 1184081 [2022-12-13 22:32:24,369 INFO L226 Difference]: Without dead ends: 784453 [2022-12-13 22:32:25,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:32:25,191 INFO L413 NwaCegarLoop]: 4397 mSDtfsCounter, 199 mSDsluCounter, 4185 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 8582 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:32:25,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 8582 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:32:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784453 states. [2022-12-13 22:33:34,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784453 to 784017. [2022-12-13 22:33:34,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784017 states, 689300 states have (on average 1.322038299724358) internal successors, (911281), 694294 states have internal predecessors, (911281), 50483 states have call successors, (50483), 39921 states have call predecessors, (50483), 44232 states have return successors, (176801), 50057 states have call predecessors, (176801), 50481 states have call successors, (176801) [2022-12-13 22:33:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784017 states to 784017 states and 1138565 transitions. [2022-12-13 22:33:38,117 INFO L78 Accepts]: Start accepts. Automaton has 784017 states and 1138565 transitions. Word has length 186 [2022-12-13 22:33:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:33:38,118 INFO L495 AbstractCegarLoop]: Abstraction has 784017 states and 1138565 transitions. [2022-12-13 22:33:38,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 22:33:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 784017 states and 1138565 transitions. [2022-12-13 22:33:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-13 22:33:39,197 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:33:39,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 22:33:39,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 22:33:39,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:33:39,398 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:33:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:33:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 817817236, now seen corresponding path program 1 times [2022-12-13 22:33:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:33:39,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113365018] [2022-12-13 22:33:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:33:39,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:33:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:33:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:33:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:33:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:33:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:33:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 22:33:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:33:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:33:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 22:33:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:33:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 22:33:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 22:33:39,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:33:39,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113365018] [2022-12-13 22:33:39,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113365018] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:33:39,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759450107] [2022-12-13 22:33:39,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:33:39,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:33:39,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:33:39,709 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:33:39,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 22:33:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:33:39,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:33:39,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:33:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 22:33:39,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:33:39,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759450107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:33:39,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:33:39,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:33:39,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706555209] [2022-12-13 22:33:39,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:33:39,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:33:39,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:33:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:33:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:33:39,852 INFO L87 Difference]: Start difference. First operand 784017 states and 1138565 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 22:34:57,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:34:57,607 INFO L93 Difference]: Finished difference Result 1420961 states and 2060907 transitions. [2022-12-13 22:34:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:34:57,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 186 [2022-12-13 22:34:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:35:01,017 INFO L225 Difference]: With dead ends: 1420961 [2022-12-13 22:35:01,017 INFO L226 Difference]: Without dead ends: 828685 [2022-12-13 22:35:02,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:35:02,228 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4138 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 4467 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:35:02,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4138 Valid, 4467 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:35:02,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828685 states. [2022-12-13 22:36:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828685 to 813977. [2022-12-13 22:36:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813977 states, 718124 states have (on average 1.315406531462533) internal successors, (944625), 723118 states have internal predecessors, (944625), 50483 states have call successors, (50483), 41057 states have call predecessors, (50483), 45368 states have return successors, (180635), 50057 states have call predecessors, (180635), 50481 states have call successors, (180635) [2022-12-13 22:36:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813977 states to 813977 states and 1175743 transitions. [2022-12-13 22:36:21,284 INFO L78 Accepts]: Start accepts. Automaton has 813977 states and 1175743 transitions. Word has length 186 [2022-12-13 22:36:21,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:36:21,285 INFO L495 AbstractCegarLoop]: Abstraction has 813977 states and 1175743 transitions. [2022-12-13 22:36:21,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 22:36:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 813977 states and 1175743 transitions. [2022-12-13 22:36:22,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-13 22:36:22,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:36:22,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 22:36:22,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 22:36:22,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:36:22,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:36:22,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:22,527 INFO L85 PathProgramCache]: Analyzing trace with hash 736767752, now seen corresponding path program 1 times [2022-12-13 22:36:22,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:22,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468934041] [2022-12-13 22:36:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:22,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 22:36:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:36:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:36:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:36:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:36:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 22:36:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:36:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:36:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 22:36:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 22:36:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 22:36:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 22:36:22,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:22,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468934041] [2022-12-13 22:36:22,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468934041] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:36:22,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447780148] [2022-12-13 22:36:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:22,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:36:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:36:22,637 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:36:22,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae5462e-1211-41e3-848e-7c1f81efba00/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 22:36:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:22,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:36:22,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:36:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 22:36:22,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:36:22,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447780148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:22,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:36:22,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 22:36:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475519333] [2022-12-13 22:36:22,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:22,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:22,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:36:22,764 INFO L87 Difference]: Start difference. First operand 813977 states and 1175743 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)