./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN --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 f9cd80dbbe1b4066ac5bff4e37171791ef74a282de4eb4995f2a9b4ca41823fa --- 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-6b4ec56 [2022-11-20 10:30:00,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:00,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:00,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:00,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:00,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:00,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:00,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:00,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:00,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:00,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:00,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:00,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:00,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:00,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:00,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:00,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:01,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:01,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:01,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:01,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:01,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:01,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:01,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:01,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:01,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:01,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:01,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:01,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:01,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:01,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:01,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:01,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:01,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:01,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:01,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:01,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:01,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:01,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:01,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:01,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:01,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:30:01,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:01,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:01,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:01,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:01,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:01,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:01,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:01,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:01,072 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:01,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:01,073 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:30:01,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:01,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:30:01,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:01,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:01,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:01,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:01,075 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:30:01,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:01,075 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:01,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:01,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:01,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:01,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:01,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:01,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:01,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:01,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:01,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:01,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:01,078 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:01,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:01,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:01,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9cd80dbbe1b4066ac5bff4e37171791ef74a282de4eb4995f2a9b4ca41823fa [2022-11-20 10:30:01,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:01,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:01,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:01,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:01,355 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:01,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.06.cil-2.c [2022-11-20 10:30:04,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:05,133 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:05,134 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/sv-benchmarks/c/combinations/Problem05_label48+token_ring.06.cil-2.c [2022-11-20 10:30:05,185 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/data/324a88360/737041e8456240f787bb853b3c9bd567/FLAGb0b528249 [2022-11-20 10:30:05,203 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/data/324a88360/737041e8456240f787bb853b3c9bd567 [2022-11-20 10:30:05,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:05,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:05,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:05,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:05,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:05,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d7b54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05, skipping insertion in model container [2022-11-20 10:30:05,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:05,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:07,980 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_14297291-7b5e-4bc2-8b1a-52905c65f4e8/sv-benchmarks/c/combinations/Problem05_label48+token_ring.06.cil-2.c[375709,375722] [2022-11-20 10:30:08,016 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_14297291-7b5e-4bc2-8b1a-52905c65f4e8/sv-benchmarks/c/combinations/Problem05_label48+token_ring.06.cil-2.c[383339,383352] [2022-11-20 10:30:08,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:08,276 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:09,560 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_14297291-7b5e-4bc2-8b1a-52905c65f4e8/sv-benchmarks/c/combinations/Problem05_label48+token_ring.06.cil-2.c[375709,375722] [2022-11-20 10:30:09,575 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_14297291-7b5e-4bc2-8b1a-52905c65f4e8/sv-benchmarks/c/combinations/Problem05_label48+token_ring.06.cil-2.c[383339,383352] [2022-11-20 10:30:09,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:09,707 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:09,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09 WrapperNode [2022-11-20 10:30:09,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:09,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:09,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:09,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:09,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:09,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:10,364 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2022-11-20 10:30:10,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:10,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:10,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:10,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:10,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:10,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:10,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:10,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:10,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:10,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:10,905 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:10,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:10,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:10,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:10,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:10,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:10,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (1/1) ... [2022-11-20 10:30:11,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:11,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:11,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:11,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14297291-7b5e-4bc2-8b1a-52905c65f4e8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 10:30:11,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 10:30:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 10:30:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 10:30:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 10:30:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 10:30:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 10:30:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 10:30:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 10:30:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 10:30:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 10:30:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 10:30:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:11,422 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:11,424 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:20,744 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:20,781 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:20,781 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 10:30:20,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:20 BoogieIcfgContainer [2022-11-20 10:30:20,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:20,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:20,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:20,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:20,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:05" (1/3) ... [2022-11-20 10:30:20,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76001965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:20, skipping insertion in model container [2022-11-20 10:30:20,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:09" (2/3) ... [2022-11-20 10:30:20,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76001965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:20, skipping insertion in model container [2022-11-20 10:30:20,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:20" (3/3) ... [2022-11-20 10:30:20,804 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.06.cil-2.c [2022-11-20 10:30:20,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:20,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 10:30:20,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:20,953 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;@994bd02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:20,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 10:30:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-20 10:30:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:30:20,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:20,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:20,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2022-11-20 10:30:20,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:20,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777573455] [2022-11-20 10:30:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:20,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:21,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:30:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:30:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:21,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:30:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:21,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777573455] [2022-11-20 10:30:21,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777573455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:21,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:21,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122286072] [2022-11-20 10:30:21,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:21,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:30:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:30:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:30:21,600 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:23,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:23,182 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2022-11-20 10:30:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:23,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-20 10:30:23,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:23,218 INFO L225 Difference]: With dead ends: 4896 [2022-11-20 10:30:23,218 INFO L226 Difference]: Without dead ends: 2424 [2022-11-20 10:30:23,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:23,236 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 588 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 16547 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:23,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 16547 Invalid, 615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:30:23,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-11-20 10:30:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2022-11-20 10:30:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-20 10:30:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2022-11-20 10:30:23,408 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2022-11-20 10:30:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:23,409 INFO L495 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2022-11-20 10:30:23,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2022-11-20 10:30:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:30:23,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:23,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:23,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:23,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:23,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2022-11-20 10:30:23,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:23,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574868229] [2022-11-20 10:30:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:23,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:30:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:30:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:30:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:23,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:23,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574868229] [2022-11-20 10:30:23,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574868229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:23,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:23,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:30:23,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622126871] [2022-11-20 10:30:23,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:23,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:30:23,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:30:23,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:30:23,852 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:26,977 INFO L93 Difference]: Finished difference Result 2945 states and 5262 transitions. [2022-11-20 10:30:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:30:26,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-20 10:30:26,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:26,991 INFO L225 Difference]: With dead ends: 2945 [2022-11-20 10:30:26,991 INFO L226 Difference]: Without dead ends: 2732 [2022-11-20 10:30:26,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:30:26,995 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 4789 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21237 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:26,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21237 Invalid, 2161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 10:30:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-11-20 10:30:27,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2571. [2022-11-20 10:30:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8177124702144558) internal successors, (4577), 2522 states have internal predecessors, (4577), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-11-20 10:30:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4658 transitions. [2022-11-20 10:30:27,117 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4658 transitions. Word has length 112 [2022-11-20 10:30:27,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:27,117 INFO L495 AbstractCegarLoop]: Abstraction has 2571 states and 4658 transitions. [2022-11-20 10:30:27,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:27,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4658 transitions. [2022-11-20 10:30:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:30:27,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:27,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:27,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:30:27,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2022-11-20 10:30:27,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:27,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959857981] [2022-11-20 10:30:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:27,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:30:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:30:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:27,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:30:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:27,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:27,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959857981] [2022-11-20 10:30:27,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959857981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:27,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:27,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:30:27,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566355604] [2022-11-20 10:30:27,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:30:27,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:30:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:30:27,465 INFO L87 Difference]: Start difference. First operand 2571 states and 4658 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:30,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:30,397 INFO L93 Difference]: Finished difference Result 3704 states and 6454 transitions. [2022-11-20 10:30:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:30:30,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-20 10:30:30,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:30,413 INFO L225 Difference]: With dead ends: 3704 [2022-11-20 10:30:30,413 INFO L226 Difference]: Without dead ends: 3270 [2022-11-20 10:30:30,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:30:30,425 INFO L413 NwaCegarLoop]: 4274 mSDtfsCounter, 4814 mSDsluCounter, 16875 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 21149 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:30,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4827 Valid, 21149 Invalid, 2043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 10:30:30,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-11-20 10:30:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2981. [2022-11-20 10:30:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2884 states have (on average 1.782246879334258) internal successors, (5140), 2890 states have internal predecessors, (5140), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2022-11-20 10:30:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 5291 transitions. [2022-11-20 10:30:30,583 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 5291 transitions. Word has length 112 [2022-11-20 10:30:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:30,583 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 5291 transitions. [2022-11-20 10:30:30,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:30,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 5291 transitions. [2022-11-20 10:30:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:30:30,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:30,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:30,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:30:30,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:30,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:30,588 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2022-11-20 10:30:30,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:30,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738380196] [2022-11-20 10:30:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:30,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:30,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:30,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:30:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:30,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:30:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:30,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:30:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:30,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:30,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738380196] [2022-11-20 10:30:30,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738380196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:30,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:30,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:30:30,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659792023] [2022-11-20 10:30:30,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:30,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:30:30,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:30:30,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:30:30,825 INFO L87 Difference]: Start difference. First operand 2981 states and 5291 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:33,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:33,689 INFO L93 Difference]: Finished difference Result 5188 states and 8779 transitions. [2022-11-20 10:30:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:30:33,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-20 10:30:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:33,708 INFO L225 Difference]: With dead ends: 5188 [2022-11-20 10:30:33,708 INFO L226 Difference]: Without dead ends: 4344 [2022-11-20 10:30:33,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:30:33,714 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 4789 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21234 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:33,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21234 Invalid, 2153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 10:30:33,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2022-11-20 10:30:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3803. [2022-11-20 10:30:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3618 states have (on average 1.732448866777225) internal successors, (6268), 3628 states have internal predecessors, (6268), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2022-11-20 10:30:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6565 transitions. [2022-11-20 10:30:33,939 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6565 transitions. Word has length 112 [2022-11-20 10:30:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:33,940 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 6565 transitions. [2022-11-20 10:30:33,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6565 transitions. [2022-11-20 10:30:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:30:33,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:33,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:33,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:30:33,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:33,948 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2022-11-20 10:30:33,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:33,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871359214] [2022-11-20 10:30:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:33,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:30:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:30:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:30:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:34,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:34,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871359214] [2022-11-20 10:30:34,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871359214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:34,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:34,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:30:34,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642510400] [2022-11-20 10:30:34,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:34,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:30:34,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:34,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:30:34,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:30:34,211 INFO L87 Difference]: Start difference. First operand 3803 states and 6565 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:37,205 INFO L93 Difference]: Finished difference Result 8154 states and 13443 transitions. [2022-11-20 10:30:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:30:37,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-20 10:30:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:37,244 INFO L225 Difference]: With dead ends: 8154 [2022-11-20 10:30:37,244 INFO L226 Difference]: Without dead ends: 6488 [2022-11-20 10:30:37,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:30:37,252 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 4789 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21234 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:37,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21234 Invalid, 2144 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 10:30:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2022-11-20 10:30:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5453. [2022-11-20 10:30:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5092 states have (on average 1.6755695208169679) internal successors, (8532), 5110 states have internal predecessors, (8532), 247 states have call successors, (247), 96 states have call predecessors, (247), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2022-11-20 10:30:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 9139 transitions. [2022-11-20 10:30:37,643 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 9139 transitions. Word has length 112 [2022-11-20 10:30:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:37,645 INFO L495 AbstractCegarLoop]: Abstraction has 5453 states and 9139 transitions. [2022-11-20 10:30:37,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 9139 transitions. [2022-11-20 10:30:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:30:37,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:37,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:37,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:30:37,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:37,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2022-11-20 10:30:37,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:37,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334913771] [2022-11-20 10:30:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:37,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:30:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:30:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:30:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:37,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:37,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334913771] [2022-11-20 10:30:37,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334913771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:37,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:37,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:30:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98650531] [2022-11-20 10:30:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:37,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:30:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:30:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:30:37,854 INFO L87 Difference]: Start difference. First operand 5453 states and 9139 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:41,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:41,075 INFO L93 Difference]: Finished difference Result 14084 states and 22827 transitions. [2022-11-20 10:30:41,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:30:41,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-20 10:30:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:41,151 INFO L225 Difference]: With dead ends: 14084 [2022-11-20 10:30:41,151 INFO L226 Difference]: Without dead ends: 10768 [2022-11-20 10:30:41,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:30:41,173 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 4789 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21234 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:41,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21234 Invalid, 2135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 10:30:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10768 states. [2022-11-20 10:30:42,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10768 to 8767. [2022-11-20 10:30:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 8054 states have (on average 1.6240377452197665) internal successors, (13080), 8088 states have internal predecessors, (13080), 487 states have call successors, (487), 192 states have call predecessors, (487), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2022-11-20 10:30:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 14361 transitions. [2022-11-20 10:30:42,073 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 14361 transitions. Word has length 112 [2022-11-20 10:30:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:42,073 INFO L495 AbstractCegarLoop]: Abstraction has 8767 states and 14361 transitions. [2022-11-20 10:30:42,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 14361 transitions. [2022-11-20 10:30:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:30:42,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:42,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:42,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:30:42,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2022-11-20 10:30:42,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:42,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997417733] [2022-11-20 10:30:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:42,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:30:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:30:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:30:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:42,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:42,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997417733] [2022-11-20 10:30:42,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997417733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:42,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:42,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:30:42,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314007475] [2022-11-20 10:30:42,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:42,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:30:42,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:30:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:30:42,296 INFO L87 Difference]: Start difference. First operand 8767 states and 14361 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:45,897 INFO L93 Difference]: Finished difference Result 25942 states and 41783 transitions. [2022-11-20 10:30:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:30:45,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-20 10:30:45,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:45,985 INFO L225 Difference]: With dead ends: 25942 [2022-11-20 10:30:45,985 INFO L226 Difference]: Without dead ends: 19312 [2022-11-20 10:30:46,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:30:46,016 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 4789 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21234 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:46,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21234 Invalid, 2126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 10:30:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2022-11-20 10:30:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 15425. [2022-11-20 10:30:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15425 states, 14008 states have (on average 1.5862364363221018) internal successors, (22220), 14074 states have internal predecessors, (22220), 967 states have call successors, (967), 384 states have call predecessors, (967), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2022-11-20 10:30:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15425 states to 15425 states and 25011 transitions. [2022-11-20 10:30:47,434 INFO L78 Accepts]: Start accepts. Automaton has 15425 states and 25011 transitions. Word has length 112 [2022-11-20 10:30:47,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:47,435 INFO L495 AbstractCegarLoop]: Abstraction has 15425 states and 25011 transitions. [2022-11-20 10:30:47,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:47,435 INFO L276 IsEmpty]: Start isEmpty. Operand 15425 states and 25011 transitions. [2022-11-20 10:30:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:30:47,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:47,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:47,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:30:47,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:47,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2022-11-20 10:30:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:47,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118242550] [2022-11-20 10:30:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:47,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:30:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:30:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:30:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:47,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:47,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118242550] [2022-11-20 10:30:47,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118242550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:47,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:47,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:30:47,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293482647] [2022-11-20 10:30:47,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:47,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:30:47,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:30:47,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:30:47,760 INFO L87 Difference]: Start difference. First operand 15425 states and 25011 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:53,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:53,999 INFO L93 Difference]: Finished difference Result 55608 states and 89253 transitions. [2022-11-20 10:30:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:30:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-20 10:30:54,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:54,207 INFO L225 Difference]: With dead ends: 55608 [2022-11-20 10:30:54,207 INFO L226 Difference]: Without dead ends: 42320 [2022-11-20 10:30:54,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:30:54,271 INFO L413 NwaCegarLoop]: 4294 mSDtfsCounter, 5047 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5067 SdHoareTripleChecker+Valid, 21224 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:54,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5067 Valid, 21224 Invalid, 2110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 10:30:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42320 states. [2022-11-20 10:30:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42320 to 28611. [2022-11-20 10:30:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28611 states, 25850 states have (on average 1.565338491295938) internal successors, (40464), 25980 states have internal predecessors, (40464), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2022-11-20 10:30:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28611 states to 28611 states and 46633 transitions. [2022-11-20 10:30:57,316 INFO L78 Accepts]: Start accepts. Automaton has 28611 states and 46633 transitions. Word has length 112 [2022-11-20 10:30:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:57,316 INFO L495 AbstractCegarLoop]: Abstraction has 28611 states and 46633 transitions. [2022-11-20 10:30:57,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:30:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 28611 states and 46633 transitions. [2022-11-20 10:30:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:30:57,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:57,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:57,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:30:57,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:57,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2022-11-20 10:30:57,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:57,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349601889] [2022-11-20 10:30:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:57,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:30:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:30:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:30:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:57,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:57,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349601889] [2022-11-20 10:30:57,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349601889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:57,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:57,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:30:57,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537673636] [2022-11-20 10:30:57,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:57,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:30:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:57,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:30:57,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:30:57,558 INFO L87 Difference]: Start difference. First operand 28611 states and 46633 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:31:08,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:08,265 INFO L93 Difference]: Finished difference Result 105085 states and 171193 transitions. [2022-11-20 10:31:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:31:08,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-20 10:31:08,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:08,895 INFO L225 Difference]: With dead ends: 105085 [2022-11-20 10:31:08,895 INFO L226 Difference]: Without dead ends: 78611 [2022-11-20 10:31:08,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:31:08,996 INFO L413 NwaCegarLoop]: 4294 mSDtfsCounter, 4982 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5002 SdHoareTripleChecker+Valid, 21224 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:08,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5002 Valid, 21224 Invalid, 2055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 10:31:09,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78611 states. [2022-11-20 10:31:14,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78611 to 55045. [2022-11-20 10:31:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55045 states, 49660 states have (on average 1.5559403946838501) internal successors, (77268), 49918 states have internal predecessors, (77268), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2022-11-20 10:31:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55045 states to 55045 states and 91523 transitions. [2022-11-20 10:31:15,059 INFO L78 Accepts]: Start accepts. Automaton has 55045 states and 91523 transitions. Word has length 112 [2022-11-20 10:31:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:15,060 INFO L495 AbstractCegarLoop]: Abstraction has 55045 states and 91523 transitions. [2022-11-20 10:31:15,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:31:15,060 INFO L276 IsEmpty]: Start isEmpty. Operand 55045 states and 91523 transitions. [2022-11-20 10:31:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:31:15,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:15,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:15,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:31:15,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:15,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2022-11-20 10:31:15,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:15,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143754006] [2022-11-20 10:31:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:15,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:31:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:31:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:31:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:31:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:15,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 10:31:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:15,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:15,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143754006] [2022-11-20 10:31:15,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143754006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:15,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:15,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:31:15,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767759355] [2022-11-20 10:31:15,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:15,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:31:15,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:15,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:31:15,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:31:15,358 INFO L87 Difference]: Start difference. First operand 55045 states and 91523 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)