./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:03:30,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:03:30,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:03:30,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:03:30,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:03:30,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:03:30,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:03:30,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:03:30,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:03:30,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:03:30,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:03:30,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:03:30,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:03:30,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:03:30,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:03:30,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:03:30,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:03:30,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:03:30,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:03:30,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:03:30,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:03:30,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:03:30,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:03:30,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:03:30,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:03:30,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:03:30,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:03:30,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:03:30,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:03:30,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:03:30,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:03:30,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:03:30,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:03:30,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:03:30,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:03:30,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:03:30,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:03:30,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:03:30,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:03:30,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:03:30,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:03:30,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:03:30,975 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:03:30,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:03:30,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:03:30,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:03:30,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:03:30,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:03:30,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:03:30,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:03:30,977 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:03:30,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:03:30,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:03:30,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:03:30,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:03:30,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:03:30,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:03:30,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:03:30,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:03:30,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:03:30,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:03:30,978 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:03:30,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:03:30,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:03:30,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:03:30,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:03:30,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:03:30,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:03:30,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:03:30,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:03:30,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:03:30,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:03:30,980 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:03:30,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:03:30,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:03:30,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:03:30,981 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_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 [2021-12-06 22:03:31,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:03:31,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:03:31,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:03:31,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:03:31,172 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:03:31,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c [2021-12-06 22:03:31,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/data/ac2460197/147074bfd2ed485a9117540be72880a5/FLAG5729a8ea7 [2021-12-06 22:03:31,893 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:03:31,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c [2021-12-06 22:03:31,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/data/ac2460197/147074bfd2ed485a9117540be72880a5/FLAG5729a8ea7 [2021-12-06 22:03:32,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/data/ac2460197/147074bfd2ed485a9117540be72880a5 [2021-12-06 22:03:32,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:03:32,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:03:32,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:03:32,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:03:32,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:03:32,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:03:32" (1/1) ... [2021-12-06 22:03:32,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@261dd476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:32, skipping insertion in model container [2021-12-06 22:03:32,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:03:32" (1/1) ... [2021-12-06 22:03:32,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:03:32,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:03:33,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2021-12-06 22:03:33,888 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2021-12-06 22:03:34,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:03:34,063 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:03:34,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2021-12-06 22:03:34,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2021-12-06 22:03:34,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:03:34,952 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:03:34,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34 WrapperNode [2021-12-06 22:03:34,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:03:34,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:03:34,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:03:34,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:03:34,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,287 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2021-12-06 22:03:35,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:03:35,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:03:35,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:03:35,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:03:35,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:03:35,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:03:35,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:03:35,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:03:35,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (1/1) ... [2021-12-06 22:03:35,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:03:35,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:35,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:35,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:03:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:03:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 22:03:35,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 22:03:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 22:03:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 22:03:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 22:03:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 22:03:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 22:03:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 22:03:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 22:03:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 22:03:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 22:03:35,732 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 22:03:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:03:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:03:35,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:03:35,817 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:03:35,819 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:03:39,941 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:03:39,968 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:03:39,968 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-06 22:03:39,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:03:39 BoogieIcfgContainer [2021-12-06 22:03:39,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:03:39,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:03:39,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:03:39,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:03:39,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:03:32" (1/3) ... [2021-12-06 22:03:39,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c19a6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:03:39, skipping insertion in model container [2021-12-06 22:03:39,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:34" (2/3) ... [2021-12-06 22:03:39,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c19a6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:03:39, skipping insertion in model container [2021-12-06 22:03:39,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:03:39" (3/3) ... [2021-12-06 22:03:39,979 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.04.cil-1.c [2021-12-06 22:03:39,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:03:39,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 22:03:40,033 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:03:40,040 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:03:40,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 22:03:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-06 22:03:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:40,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:40,114 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:40,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:40,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2021-12-06 22:03:40,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:40,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200737883] [2021-12-06 22:03:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:40,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:40,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:40,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:40,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:40,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:40,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200737883] [2021-12-06 22:03:40,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200737883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:40,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:40,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:03:40,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579248387] [2021-12-06 22:03:40,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:40,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:03:40,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:40,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:03:40,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:03:40,457 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:41,075 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2021-12-06 22:03:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:03:41,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:41,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:41,108 INFO L225 Difference]: With dead ends: 4778 [2021-12-06 22:03:41,108 INFO L226 Difference]: Without dead ends: 2352 [2021-12-06 22:03:41,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:03:41,122 INFO L933 BasicCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 16584 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:41,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 16584 Invalid, 331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:03:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-12-06 22:03:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2021-12-06 22:03:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-06 22:03:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2021-12-06 22:03:41,285 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2021-12-06 22:03:41,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:41,286 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2021-12-06 22:03:41,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:41,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2021-12-06 22:03:41,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:41,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:41,293 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:41,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:03:41,293 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2021-12-06 22:03:41,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:41,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510522056] [2021-12-06 22:03:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:41,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:41,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:41,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:41,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510522056] [2021-12-06 22:03:41,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510522056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:41,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:41,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:03:41,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515393135] [2021-12-06 22:03:41,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:41,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:03:41,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:03:41,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:03:41,450 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:42,341 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2021-12-06 22:03:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:03:42,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:42,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:42,361 INFO L225 Difference]: With dead ends: 2738 [2021-12-06 22:03:42,361 INFO L226 Difference]: Without dead ends: 2573 [2021-12-06 22:03:42,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:03:42,365 INFO L933 BasicCegarLoop]: 4266 mSDtfsCounter, 4590 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 16618 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:42,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4601 Valid, 16618 Invalid, 893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:03:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2021-12-06 22:03:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2021-12-06 22:03:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-12-06 22:03:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2021-12-06 22:03:42,464 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2021-12-06 22:03:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:42,464 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2021-12-06 22:03:42,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2021-12-06 22:03:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:42,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:42,467 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:42,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:03:42,468 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2021-12-06 22:03:42,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:42,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799292738] [2021-12-06 22:03:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:42,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:42,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:42,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799292738] [2021-12-06 22:03:42,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799292738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:42,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:42,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:03:42,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661487701] [2021-12-06 22:03:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:42,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:03:42,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:03:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:03:42,598 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:43,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:43,052 INFO L93 Difference]: Finished difference Result 2912 states and 5180 transitions. [2021-12-06 22:03:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:03:43,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:43,065 INFO L225 Difference]: With dead ends: 2912 [2021-12-06 22:03:43,065 INFO L226 Difference]: Without dead ends: 2579 [2021-12-06 22:03:43,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:03:43,090 INFO L933 BasicCegarLoop]: 4225 mSDtfsCounter, 4490 mSDsluCounter, 12205 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 16430 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:43,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4502 Valid, 16430 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:03:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2021-12-06 22:03:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2466. [2021-12-06 22:03:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.8239669421487603) internal successors, (4414), 2423 states have internal predecessors, (4414), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-12-06 22:03:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4479 transitions. [2021-12-06 22:03:43,152 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4479 transitions. Word has length 90 [2021-12-06 22:03:43,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:43,152 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4479 transitions. [2021-12-06 22:03:43,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:43,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4479 transitions. [2021-12-06 22:03:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:43,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:43,154 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:43,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:03:43,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:43,154 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2021-12-06 22:03:43,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:43,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071795410] [2021-12-06 22:03:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:43,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:43,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:43,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:43,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:43,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:43,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071795410] [2021-12-06 22:03:43,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071795410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:43,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:43,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:03:43,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260921849] [2021-12-06 22:03:43,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:43,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:03:43,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:43,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:03:43,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:03:43,235 INFO L87 Difference]: Start difference. First operand 2466 states and 4479 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:44,052 INFO L93 Difference]: Finished difference Result 3127 states and 5499 transitions. [2021-12-06 22:03:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:03:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:44,066 INFO L225 Difference]: With dead ends: 3127 [2021-12-06 22:03:44,066 INFO L226 Difference]: Without dead ends: 2794 [2021-12-06 22:03:44,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:03:44,069 INFO L933 BasicCegarLoop]: 4289 mSDtfsCounter, 4619 mSDsluCounter, 16469 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 20758 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:44,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4630 Valid, 20758 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:03:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2021-12-06 22:03:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2623. [2021-12-06 22:03:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8064137661321862) internal successors, (4619), 2561 states have internal predecessors, (4619), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2021-12-06 22:03:44,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4712 transitions. [2021-12-06 22:03:44,135 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4712 transitions. Word has length 90 [2021-12-06 22:03:44,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:44,136 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 4712 transitions. [2021-12-06 22:03:44,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4712 transitions. [2021-12-06 22:03:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:44,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:44,137 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:44,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:03:44,137 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:44,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:44,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2021-12-06 22:03:44,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:44,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435055228] [2021-12-06 22:03:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:44,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:44,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:44,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:44,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435055228] [2021-12-06 22:03:44,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435055228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:44,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:44,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:03:44,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229288625] [2021-12-06 22:03:44,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:44,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:03:44,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:03:44,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:03:44,216 INFO L87 Difference]: Start difference. First operand 2623 states and 4712 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:44,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:44,984 INFO L93 Difference]: Finished difference Result 3702 states and 6372 transitions. [2021-12-06 22:03:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:03:44,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:45,000 INFO L225 Difference]: With dead ends: 3702 [2021-12-06 22:03:45,001 INFO L226 Difference]: Without dead ends: 3212 [2021-12-06 22:03:45,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:03:45,004 INFO L933 BasicCegarLoop]: 4375 mSDtfsCounter, 4584 mSDsluCounter, 16719 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 21094 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:45,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4595 Valid, 21094 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:03:45,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2021-12-06 22:03:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 2939. [2021-12-06 22:03:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2833 states have (on average 1.7762089657606777) internal successors, (5032), 2839 states have internal predecessors, (5032), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2021-12-06 22:03:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 5185 transitions. [2021-12-06 22:03:45,080 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 5185 transitions. Word has length 90 [2021-12-06 22:03:45,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:45,080 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 5185 transitions. [2021-12-06 22:03:45,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 5185 transitions. [2021-12-06 22:03:45,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:45,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:45,082 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:45,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:03:45,082 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:45,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2021-12-06 22:03:45,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:45,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265892897] [2021-12-06 22:03:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:45,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:45,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:45,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:45,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:45,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:45,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:45,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265892897] [2021-12-06 22:03:45,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265892897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:45,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:45,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:03:45,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195002132] [2021-12-06 22:03:45,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:45,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:03:45,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:03:45,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:03:45,152 INFO L87 Difference]: Start difference. First operand 2939 states and 5185 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:46,004 INFO L93 Difference]: Finished difference Result 5072 states and 8441 transitions. [2021-12-06 22:03:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:03:46,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:46,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:46,023 INFO L225 Difference]: With dead ends: 5072 [2021-12-06 22:03:46,023 INFO L226 Difference]: Without dead ends: 4266 [2021-12-06 22:03:46,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:03:46,027 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 4748 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4764 SdHoareTripleChecker+Valid, 21074 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:46,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4764 Valid, 21074 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:03:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2021-12-06 22:03:46,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 3566. [2021-12-06 22:03:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3384 states have (on average 1.7322695035460993) internal successors, (5862), 3394 states have internal predecessors, (5862), 118 states have call successors, (118), 54 states have call predecessors, (118), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2021-12-06 22:03:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 6133 transitions. [2021-12-06 22:03:46,129 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 6133 transitions. Word has length 90 [2021-12-06 22:03:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:46,129 INFO L470 AbstractCegarLoop]: Abstraction has 3566 states and 6133 transitions. [2021-12-06 22:03:46,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:46,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 6133 transitions. [2021-12-06 22:03:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:46,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:46,131 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:46,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:03:46,132 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:46,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2021-12-06 22:03:46,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:46,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451957630] [2021-12-06 22:03:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:46,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:46,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:46,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:46,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:46,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451957630] [2021-12-06 22:03:46,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451957630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:46,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:46,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:03:46,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796405999] [2021-12-06 22:03:46,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:46,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:03:46,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:46,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:03:46,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:03:46,203 INFO L87 Difference]: Start difference. First operand 3566 states and 6133 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:47,186 INFO L93 Difference]: Finished difference Result 7431 states and 12027 transitions. [2021-12-06 22:03:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:03:47,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:47,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:47,213 INFO L225 Difference]: With dead ends: 7431 [2021-12-06 22:03:47,214 INFO L226 Difference]: Without dead ends: 5998 [2021-12-06 22:03:47,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:03:47,219 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 4605 mSDsluCounter, 16708 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4615 SdHoareTripleChecker+Valid, 21125 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:47,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4615 Valid, 21125 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:03:47,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5998 states. [2021-12-06 22:03:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5998 to 4773. [2021-12-06 22:03:47,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 4443 states have (on average 1.6781453972541076) internal successors, (7456), 4461 states have internal predecessors, (7456), 210 states have call successors, (210), 102 states have call predecessors, (210), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2021-12-06 22:03:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 7973 transitions. [2021-12-06 22:03:47,379 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 7973 transitions. Word has length 90 [2021-12-06 22:03:47,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:47,379 INFO L470 AbstractCegarLoop]: Abstraction has 4773 states and 7973 transitions. [2021-12-06 22:03:47,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 7973 transitions. [2021-12-06 22:03:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:47,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:47,382 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:47,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:03:47,382 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:47,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2021-12-06 22:03:47,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:47,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394260770] [2021-12-06 22:03:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:47,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:47,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:47,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:47,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:47,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394260770] [2021-12-06 22:03:47,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394260770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:47,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:47,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:03:47,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203581783] [2021-12-06 22:03:47,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:47,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:03:47,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:03:47,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:03:47,449 INFO L87 Difference]: Start difference. First operand 4773 states and 7973 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:48,440 INFO L93 Difference]: Finished difference Result 11880 states and 18833 transitions. [2021-12-06 22:03:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:03:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:48,472 INFO L225 Difference]: With dead ends: 11880 [2021-12-06 22:03:48,473 INFO L226 Difference]: Without dead ends: 9240 [2021-12-06 22:03:48,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:03:48,482 INFO L933 BasicCegarLoop]: 4353 mSDtfsCounter, 4668 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 21064 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:48,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4684 Valid, 21064 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:03:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2021-12-06 22:03:48,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 7218. [2021-12-06 22:03:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7218 states, 6600 states have (on average 1.6233333333333333) internal successors, (10714), 6634 states have internal predecessors, (10714), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2021-12-06 22:03:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7218 states to 7218 states and 11761 transitions. [2021-12-06 22:03:48,796 INFO L78 Accepts]: Start accepts. Automaton has 7218 states and 11761 transitions. Word has length 90 [2021-12-06 22:03:48,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:48,796 INFO L470 AbstractCegarLoop]: Abstraction has 7218 states and 11761 transitions. [2021-12-06 22:03:48,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7218 states and 11761 transitions. [2021-12-06 22:03:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:48,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:48,803 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:48,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:03:48,803 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2021-12-06 22:03:48,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:48,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385306389] [2021-12-06 22:03:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:48,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:48,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:48,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:48,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:48,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385306389] [2021-12-06 22:03:48,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385306389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:48,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:48,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:03:48,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932109323] [2021-12-06 22:03:48,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:48,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:03:48,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:03:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:03:48,879 INFO L87 Difference]: Start difference. First operand 7218 states and 11761 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:50,110 INFO L93 Difference]: Finished difference Result 20587 states and 32367 transitions. [2021-12-06 22:03:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:03:50,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:50,143 INFO L225 Difference]: With dead ends: 20587 [2021-12-06 22:03:50,143 INFO L226 Difference]: Without dead ends: 15502 [2021-12-06 22:03:50,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:03:50,156 INFO L933 BasicCegarLoop]: 4348 mSDtfsCounter, 4628 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 21059 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:50,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4644 Valid, 21059 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:03:50,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15502 states. [2021-12-06 22:03:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15502 to 12091. [2021-12-06 22:03:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12091 states, 10913 states have (on average 1.5801337853935673) internal successors, (17244), 10979 states have internal predecessors, (17244), 722 states have call successors, (722), 390 states have call predecessors, (722), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2021-12-06 22:03:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12091 states to 12091 states and 19481 transitions. [2021-12-06 22:03:50,579 INFO L78 Accepts]: Start accepts. Automaton has 12091 states and 19481 transitions. Word has length 90 [2021-12-06 22:03:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:50,579 INFO L470 AbstractCegarLoop]: Abstraction has 12091 states and 19481 transitions. [2021-12-06 22:03:50,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 12091 states and 19481 transitions. [2021-12-06 22:03:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:50,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:50,586 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:50,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:03:50,587 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:50,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:50,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2021-12-06 22:03:50,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:50,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024622309] [2021-12-06 22:03:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:50,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:50,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:50,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024622309] [2021-12-06 22:03:50,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024622309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:50,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:50,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:03:50,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058298727] [2021-12-06 22:03:50,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:50,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:03:50,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:50,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:03:50,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:03:50,651 INFO L87 Difference]: Start difference. First operand 12091 states and 19481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:52,383 INFO L93 Difference]: Finished difference Result 37374 states and 59105 transitions. [2021-12-06 22:03:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:03:52,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:52,443 INFO L225 Difference]: With dead ends: 37374 [2021-12-06 22:03:52,444 INFO L226 Difference]: Without dead ends: 27416 [2021-12-06 22:03:52,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:03:52,469 INFO L933 BasicCegarLoop]: 4349 mSDtfsCounter, 4573 mSDsluCounter, 16696 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 21045 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:52,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4583 Valid, 21045 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:03:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27416 states. [2021-12-06 22:03:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27416 to 21792. [2021-12-06 22:03:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21792 states, 19534 states have (on average 1.5526773830244702) internal successors, (30330), 19664 states have internal predecessors, (30330), 1358 states have call successors, (1358), 770 states have call predecessors, (1358), 898 states have return successors, (3673), 1485 states have call predecessors, (3673), 1358 states have call successors, (3673) [2021-12-06 22:03:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21792 states to 21792 states and 35361 transitions. [2021-12-06 22:03:53,434 INFO L78 Accepts]: Start accepts. Automaton has 21792 states and 35361 transitions. Word has length 90 [2021-12-06 22:03:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:53,435 INFO L470 AbstractCegarLoop]: Abstraction has 21792 states and 35361 transitions. [2021-12-06 22:03:53,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 21792 states and 35361 transitions. [2021-12-06 22:03:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:03:53,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:53,447 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:03:53,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:03:53,447 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:53,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2021-12-06 22:03:53,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:53,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352929190] [2021-12-06 22:03:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:53,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:53,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:53,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:53,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:53,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352929190] [2021-12-06 22:03:53,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352929190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:53,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:53,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:03:53,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282732240] [2021-12-06 22:03:53,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:53,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:03:53,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:53,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:03:53,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:03:53,504 INFO L87 Difference]: Start difference. First operand 21792 states and 35361 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:55,607 INFO L93 Difference]: Finished difference Result 58143 states and 92498 transitions. [2021-12-06 22:03:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:03:55,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-06 22:03:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:55,692 INFO L225 Difference]: With dead ends: 58143 [2021-12-06 22:03:55,692 INFO L226 Difference]: Without dead ends: 38485 [2021-12-06 22:03:55,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:03:55,732 INFO L933 BasicCegarLoop]: 4469 mSDtfsCounter, 4774 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 16900 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:55,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4803 Valid, 16900 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:03:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38485 states. [2021-12-06 22:03:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38485 to 31574. [2021-12-06 22:03:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31574 states, 28144 states have (on average 1.530130756111427) internal successors, (43064), 28403 states have internal predecessors, (43064), 2076 states have call successors, (2076), 1160 states have call predecessors, (2076), 1352 states have return successors, (5121), 2138 states have call predecessors, (5121), 2076 states have call successors, (5121) [2021-12-06 22:03:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31574 states to 31574 states and 50261 transitions. [2021-12-06 22:03:57,011 INFO L78 Accepts]: Start accepts. Automaton has 31574 states and 50261 transitions. Word has length 90 [2021-12-06 22:03:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:57,011 INFO L470 AbstractCegarLoop]: Abstraction has 31574 states and 50261 transitions. [2021-12-06 22:03:57,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:03:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 31574 states and 50261 transitions. [2021-12-06 22:03:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 22:03:57,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:57,075 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:03:57,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:03:57,075 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2021-12-06 22:03:57,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:57,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729002951] [2021-12-06 22:03:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:57,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:03:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:03:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:03:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:03:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:03:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:03:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:03:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:03:57,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:57,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729002951] [2021-12-06 22:03:57,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729002951] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:03:57,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5358211] [2021-12-06 22:03:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:57,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:03:57,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:57,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:03:57,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:03:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:57,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:57,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:03:57,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:03:57,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5358211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:57,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:03:57,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 22:03:57,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500644655] [2021-12-06 22:03:57,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:57,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:03:57,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:57,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:03:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:03:57,431 INFO L87 Difference]: Start difference. First operand 31574 states and 50261 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:03:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:59,322 INFO L93 Difference]: Finished difference Result 89759 states and 142519 transitions. [2021-12-06 22:03:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:03:59,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2021-12-06 22:03:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:59,478 INFO L225 Difference]: With dead ends: 89759 [2021-12-06 22:03:59,478 INFO L226 Difference]: Without dead ends: 60319 [2021-12-06 22:03:59,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:03:59,532 INFO L933 BasicCegarLoop]: 4232 mSDtfsCounter, 4172 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:59,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4172 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:03:59,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60319 states. [2021-12-06 22:04:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60319 to 59929. [2021-12-06 22:04:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59929 states, 53181 states have (on average 1.515522461029315) internal successors, (80597), 53697 states have internal predecessors, (80597), 4046 states have call successors, (4046), 2316 states have call predecessors, (4046), 2700 states have return successors, (10009), 4043 states have call predecessors, (10009), 4046 states have call successors, (10009) [2021-12-06 22:04:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59929 states to 59929 states and 94652 transitions. [2021-12-06 22:04:02,104 INFO L78 Accepts]: Start accepts. Automaton has 59929 states and 94652 transitions. Word has length 146 [2021-12-06 22:04:02,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:04:02,104 INFO L470 AbstractCegarLoop]: Abstraction has 59929 states and 94652 transitions. [2021-12-06 22:04:02,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:04:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 59929 states and 94652 transitions. [2021-12-06 22:04:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 22:04:02,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:04:02,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:04:02,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:04:02,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 22:04:02,368 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:04:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:04:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1368264198, now seen corresponding path program 1 times [2021-12-06 22:04:02,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:04:02,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272012503] [2021-12-06 22:04:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:02,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:04:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:04:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:04:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:04:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:04:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:04:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:04:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:04:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:04:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:04:02,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:04:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272012503] [2021-12-06 22:04:02,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272012503] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:04:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027570090] [2021-12-06 22:04:02,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:02,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:04:02,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:04:02,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:04:02,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:04:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:02,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:04:02,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:04:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:04:02,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:04:02,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027570090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:04:02,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:04:02,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 22:04:02,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998194710] [2021-12-06 22:04:02,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:04:02,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:04:02,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:04:02,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:04:02,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:04:02,681 INFO L87 Difference]: Start difference. First operand 59929 states and 94652 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:04:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:04:06,711 INFO L93 Difference]: Finished difference Result 174118 states and 275394 transitions. [2021-12-06 22:04:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:04:06,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2021-12-06 22:04:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:04:07,055 INFO L225 Difference]: With dead ends: 174118 [2021-12-06 22:04:07,055 INFO L226 Difference]: Without dead ends: 116323 [2021-12-06 22:04:07,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:04:07,164 INFO L933 BasicCegarLoop]: 4232 mSDtfsCounter, 4166 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4166 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:04:07,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4166 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:04:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116323 states. [2021-12-06 22:04:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116323 to 115545. [2021-12-06 22:04:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115545 states, 102275 states have (on average 1.5067318504033245) internal successors, (154101), 103305 states have internal predecessors, (154101), 7880 states have call successors, (7880), 4620 states have call predecessors, (7880), 5388 states have return successors, (19679), 7747 states have call predecessors, (19679), 7880 states have call successors, (19679) [2021-12-06 22:04:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115545 states to 115545 states and 181660 transitions. [2021-12-06 22:04:11,846 INFO L78 Accepts]: Start accepts. Automaton has 115545 states and 181660 transitions. Word has length 146 [2021-12-06 22:04:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:04:11,846 INFO L470 AbstractCegarLoop]: Abstraction has 115545 states and 181660 transitions. [2021-12-06 22:04:11,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:04:11,846 INFO L276 IsEmpty]: Start isEmpty. Operand 115545 states and 181660 transitions. [2021-12-06 22:04:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 22:04:11,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:04:11,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:04:11,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:04:12,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 22:04:12,160 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:04:12,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:04:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash -948680166, now seen corresponding path program 1 times [2021-12-06 22:04:12,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:04:12,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417537195] [2021-12-06 22:04:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:12,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:04:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:04:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:04:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:04:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:04:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:04:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:04:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:04:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:04:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:04:12,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:04:12,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417537195] [2021-12-06 22:04:12,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417537195] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:04:12,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42651730] [2021-12-06 22:04:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:12,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:04:12,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:04:12,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:04:12,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:04:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:12,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:04:12,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:04:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 22:04:12,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:04:12,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42651730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:04:12,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:04:12,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:04:12,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938536733] [2021-12-06 22:04:12,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:04:12,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:04:12,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:04:12,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:04:12,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:04:12,471 INFO L87 Difference]: Start difference. First operand 115545 states and 181660 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:04:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:04:20,568 INFO L93 Difference]: Finished difference Result 338259 states and 535935 transitions. [2021-12-06 22:04:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:04:20,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 146 [2021-12-06 22:04:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:04:21,503 INFO L225 Difference]: With dead ends: 338259 [2021-12-06 22:04:21,503 INFO L226 Difference]: Without dead ends: 224849 [2021-12-06 22:04:21,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:04:21,711 INFO L933 BasicCegarLoop]: 4459 mSDtfsCounter, 232 mSDsluCounter, 4220 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 8679 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:04:21,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 8679 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:04:21,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224849 states. [2021-12-06 22:04:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224849 to 224849. [2021-12-06 22:04:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224849 states, 198976 states have (on average 1.4973715422965583) internal successors, (297941), 200775 states have internal predecessors, (297941), 15167 states have call successors, (15167), 9168 states have call predecessors, (15167), 10704 states have return successors, (41394), 15161 states have call predecessors, (41394), 15167 states have call successors, (41394) [2021-12-06 22:04:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224849 states to 224849 states and 354502 transitions. [2021-12-06 22:04:31,733 INFO L78 Accepts]: Start accepts. Automaton has 224849 states and 354502 transitions. Word has length 146 [2021-12-06 22:04:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:04:31,733 INFO L470 AbstractCegarLoop]: Abstraction has 224849 states and 354502 transitions. [2021-12-06 22:04:31,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:04:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 224849 states and 354502 transitions. [2021-12-06 22:04:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:04:32,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:04:32,265 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:04:32,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:04:32,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 22:04:32,467 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:04:32,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:04:32,468 INFO L85 PathProgramCache]: Analyzing trace with hash 682317025, now seen corresponding path program 1 times [2021-12-06 22:04:32,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:04:32,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543825108] [2021-12-06 22:04:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:32,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:04:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:04:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:04:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:04:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:04:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:04:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:04:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:04:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:04:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:04:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:04:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 22:04:32,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:04:32,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543825108] [2021-12-06 22:04:32,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543825108] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:04:32,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054753949] [2021-12-06 22:04:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:32,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:04:32,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:04:32,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:04:32,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:04:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:32,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:04:32,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:04:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 22:04:32,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:04:32,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054753949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:04:32,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:04:32,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 22:04:32,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733673732] [2021-12-06 22:04:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:04:32,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:04:32,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:04:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:04:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:04:32,896 INFO L87 Difference]: Start difference. First operand 224849 states and 354502 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:04:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:04:49,042 INFO L93 Difference]: Finished difference Result 664375 states and 1053593 transitions. [2021-12-06 22:04:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:04:49,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 190 [2021-12-06 22:04:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:04:50,749 INFO L225 Difference]: With dead ends: 664375 [2021-12-06 22:04:50,749 INFO L226 Difference]: Without dead ends: 441667 [2021-12-06 22:04:51,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:04:51,172 INFO L933 BasicCegarLoop]: 4232 mSDtfsCounter, 4111 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4111 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:04:51,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4111 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:04:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441667 states. [2021-12-06 22:05:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441667 to 438561. [2021-12-06 22:05:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438561 states, 387896 states have (on average 1.4935059912966362) internal successors, (579325), 391491 states have internal predecessors, (579325), 29399 states have call successors, (29399), 18192 states have call predecessors, (29399), 21264 states have return successors, (81098), 29133 states have call predecessors, (81098), 29399 states have call successors, (81098) [2021-12-06 22:05:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438561 states to 438561 states and 689822 transitions. [2021-12-06 22:05:11,075 INFO L78 Accepts]: Start accepts. Automaton has 438561 states and 689822 transitions. Word has length 190 [2021-12-06 22:05:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:11,075 INFO L470 AbstractCegarLoop]: Abstraction has 438561 states and 689822 transitions. [2021-12-06 22:05:11,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:05:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 438561 states and 689822 transitions. [2021-12-06 22:05:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:05:12,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:12,009 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:05:12,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:05:12,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 22:05:12,211 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:12,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1529313715, now seen corresponding path program 1 times [2021-12-06 22:05:12,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:12,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612448469] [2021-12-06 22:05:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:12,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:05:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:05:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:05:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:05:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:05:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:05:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:05:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:05:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:05:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:05:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 22:05:12,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:12,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612448469] [2021-12-06 22:05:12,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612448469] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:05:12,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596630639] [2021-12-06 22:05:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:12,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:05:12,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:05:12,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:05:12,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:05:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:12,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:05:12,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:05:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 22:05:12,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:05:12,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596630639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:12,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:05:12,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 22:05:12,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689215543] [2021-12-06 22:05:12,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:12,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:05:12,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:05:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:05:12,570 INFO L87 Difference]: Start difference. First operand 438561 states and 689822 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:05:44,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:44,608 INFO L93 Difference]: Finished difference Result 1299185 states and 2055645 transitions. [2021-12-06 22:05:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:05:44,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 190 [2021-12-06 22:05:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:47,757 INFO L225 Difference]: With dead ends: 1299185 [2021-12-06 22:05:47,757 INFO L226 Difference]: Without dead ends: 862765 [2021-12-06 22:05:49,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:05:49,095 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 4114 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4114 SdHoareTripleChecker+Valid, 4471 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:49,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4114 Valid, 4471 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:05:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862765 states. [2021-12-06 22:06:26,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862765 to 856555. [2021-12-06 22:06:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856555 states, 757670 states have (on average 1.4905842913141605) internal successors, (1129371), 764857 states have internal predecessors, (1129371), 56789 states have call successors, (56789), 35950 states have call predecessors, (56789), 42094 states have return successors, (158822), 56003 states have call predecessors, (158822), 56789 states have call successors, (158822) [2021-12-06 22:06:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856555 states to 856555 states and 1344982 transitions. [2021-12-06 22:06:30,676 INFO L78 Accepts]: Start accepts. Automaton has 856555 states and 1344982 transitions. Word has length 190 [2021-12-06 22:06:30,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:30,677 INFO L470 AbstractCegarLoop]: Abstraction has 856555 states and 1344982 transitions. [2021-12-06 22:06:30,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:06:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand 856555 states and 1344982 transitions. [2021-12-06 22:06:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-06 22:06:33,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:33,091 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:33,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:06:33,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:33,293 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:33,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:33,294 INFO L85 PathProgramCache]: Analyzing trace with hash -557107795, now seen corresponding path program 1 times [2021-12-06 22:06:33,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:33,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020092308] [2021-12-06 22:06:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:33,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:06:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:06:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:06:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:06:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:06:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:06:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:06:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:06:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:06:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:06:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 22:06:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-06 22:06:33,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:33,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020092308] [2021-12-06 22:06:33,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020092308] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:06:33,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631045650] [2021-12-06 22:06:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:33,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:33,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:06:33,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:06:33,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:06:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:33,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:06:33,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:06:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:06:33,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:06:33,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631045650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:33,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:06:33,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:06:33,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31794336] [2021-12-06 22:06:33,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:33,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:33,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:33,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:06:33,827 INFO L87 Difference]: Start difference. First operand 856555 states and 1344982 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:07:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:04,798 INFO L93 Difference]: Finished difference Result 1290227 states and 2025097 transitions. [2021-12-06 22:07:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:07:04,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 209 [2021-12-06 22:07:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:07,332 INFO L225 Difference]: With dead ends: 1290227 [2021-12-06 22:07:07,332 INFO L226 Difference]: Without dead ends: 712207 [2021-12-06 22:07:08,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:07:08,571 INFO L933 BasicCegarLoop]: 4217 mSDtfsCounter, 4139 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 4271 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:08,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4139 Valid, 4271 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:07:09,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712207 states. [2021-12-06 22:07:35,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712207 to 498591. [2021-12-06 22:07:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498591 states, 443042 states have (on average 1.4400598588847107) internal successors, (638007), 446653 states have internal predecessors, (638007), 31201 states have call successors, (31201), 21274 states have call predecessors, (31201), 24346 states have return successors, (67770), 30791 states have call predecessors, (67770), 31201 states have call successors, (67770) [2021-12-06 22:07:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498591 states to 498591 states and 736978 transitions. [2021-12-06 22:07:37,706 INFO L78 Accepts]: Start accepts. Automaton has 498591 states and 736978 transitions. Word has length 209 [2021-12-06 22:07:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:37,706 INFO L470 AbstractCegarLoop]: Abstraction has 498591 states and 736978 transitions. [2021-12-06 22:07:37,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:07:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 498591 states and 736978 transitions. [2021-12-06 22:07:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-06 22:07:38,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:38,899 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:38,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:07:39,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 22:07:39,101 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:39,102 INFO L85 PathProgramCache]: Analyzing trace with hash -27752050, now seen corresponding path program 1 times [2021-12-06 22:07:39,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:39,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551628337] [2021-12-06 22:07:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:39,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:07:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:07:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:07:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:07:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:07:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:07:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:07:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:07:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:07:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:07:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 22:07:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 22:07:39,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551628337] [2021-12-06 22:07:39,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551628337] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:07:39,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618985058] [2021-12-06 22:07:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:39,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:07:39,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:07:39,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:07:39,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:07:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:39,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:07:39,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:07:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 22:07:39,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:07:39,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618985058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:39,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:07:39,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:07:39,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800502845] [2021-12-06 22:07:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:39,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:07:39,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:07:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:07:39,429 INFO L87 Difference]: Start difference. First operand 498591 states and 736978 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:08:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:01,943 INFO L93 Difference]: Finished difference Result 793255 states and 1179557 transitions. [2021-12-06 22:08:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:08:01,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 209 [2021-12-06 22:08:01,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:03,195 INFO L225 Difference]: With dead ends: 793255 [2021-12-06 22:08:03,195 INFO L226 Difference]: Without dead ends: 413799 [2021-12-06 22:08:04,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:08:04,053 INFO L933 BasicCegarLoop]: 4216 mSDtfsCounter, 4165 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4165 SdHoareTripleChecker+Valid, 4269 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:04,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4165 Valid, 4269 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413799 states. [2021-12-06 22:08:23,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413799 to 291399. [2021-12-06 22:08:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291399 states, 259922 states have (on average 1.3992774755503574) internal successors, (363703), 261745 states have internal predecessors, (363703), 17377 states have call successors, (17377), 12562 states have call predecessors, (17377), 14098 states have return successors, (31114), 17155 states have call predecessors, (31114), 17377 states have call successors, (31114) [2021-12-06 22:08:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291399 states to 291399 states and 412194 transitions. [2021-12-06 22:08:24,106 INFO L78 Accepts]: Start accepts. Automaton has 291399 states and 412194 transitions. Word has length 209 [2021-12-06 22:08:24,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:24,107 INFO L470 AbstractCegarLoop]: Abstraction has 291399 states and 412194 transitions. [2021-12-06 22:08:24,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:08:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 291399 states and 412194 transitions. [2021-12-06 22:08:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-06 22:08:24,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:24,628 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:24,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:08:24,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 22:08:24,829 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:24,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1417326642, now seen corresponding path program 1 times [2021-12-06 22:08:24,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:24,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551516139] [2021-12-06 22:08:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:24,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:08:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:08:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:08:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:08:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:08:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:08:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:08:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:08:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:08:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:08:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 22:08:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 22:08:24,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:24,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551516139] [2021-12-06 22:08:24,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551516139] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:08:24,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884127965] [2021-12-06 22:08:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:24,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:08:24,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:08:24,931 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:08:24,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:08:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:25,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:08:25,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 22:08:25,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:25,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884127965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:25,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:08:25,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:08:25,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841415909] [2021-12-06 22:08:25,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:25,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:08:25,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:25,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:08:25,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:08:25,167 INFO L87 Difference]: Start difference. First operand 291399 states and 412194 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:08:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:43,835 INFO L93 Difference]: Finished difference Result 505798 states and 711207 transitions. [2021-12-06 22:08:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:08:43,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 209 [2021-12-06 22:08:43,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:44,806 INFO L225 Difference]: With dead ends: 505798 [2021-12-06 22:08:44,806 INFO L226 Difference]: Without dead ends: 309377 [2021-12-06 22:08:45,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:08:45,076 INFO L933 BasicCegarLoop]: 4238 mSDtfsCounter, 4147 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:45,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4147 Valid, 4481 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309377 states. [2021-12-06 22:09:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309377 to 308489. [2021-12-06 22:09:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308489 states, 275912 states have (on average 1.3766889443010815) internal successors, (379845), 277735 states have internal predecessors, (379845), 17643 states have call successors, (17643), 13396 states have call predecessors, (17643), 14932 states have return successors, (32214), 17421 states have call predecessors, (32214), 17643 states have call successors, (32214) [2021-12-06 22:09:05,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308489 states to 308489 states and 429702 transitions. [2021-12-06 22:09:05,876 INFO L78 Accepts]: Start accepts. Automaton has 308489 states and 429702 transitions. Word has length 209 [2021-12-06 22:09:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:09:05,876 INFO L470 AbstractCegarLoop]: Abstraction has 308489 states and 429702 transitions. [2021-12-06 22:09:05,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:09:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 308489 states and 429702 transitions. [2021-12-06 22:09:06,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-06 22:09:06,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:09:06,602 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:09:06,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:09:06,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:09:06,804 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:09:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:09:06,805 INFO L85 PathProgramCache]: Analyzing trace with hash -807200227, now seen corresponding path program 1 times [2021-12-06 22:09:06,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:09:06,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428261517] [2021-12-06 22:09:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:09:06,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:09:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:09:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:09:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:09:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:09:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:09:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:09:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:09:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:09:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:09:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:09:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 22:09:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-06 22:09:06,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:09:06,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428261517] [2021-12-06 22:09:06,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428261517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:09:06,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273616816] [2021-12-06 22:09:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:09:06,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:09:06,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:09:06,916 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:09:06,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:09:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:06,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:09:06,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:09:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-06 22:09:07,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:09:07,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273616816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:09:07,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:09:07,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:09:07,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457919748] [2021-12-06 22:09:07,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:09:07,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:09:07,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:09:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:09:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:09:07,126 INFO L87 Difference]: Start difference. First operand 308489 states and 429702 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:09:36,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:09:36,693 INFO L93 Difference]: Finished difference Result 766125 states and 1072192 transitions. [2021-12-06 22:09:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:09:36,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 210 [2021-12-06 22:09:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:09:38,200 INFO L225 Difference]: With dead ends: 766125 [2021-12-06 22:09:38,200 INFO L226 Difference]: Without dead ends: 459779 [2021-12-06 22:09:38,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:09:38,655 INFO L933 BasicCegarLoop]: 4245 mSDtfsCounter, 4161 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4161 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:09:38,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4161 Valid, 4474 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:09:38,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459779 states. [2021-12-06 22:10:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459779 to 438161. [2021-12-06 22:10:07,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438161 states, 391096 states have (on average 1.370315728107677) internal successors, (535925), 393827 states have internal predecessors, (535925), 25551 states have call successors, (25551), 19208 states have call predecessors, (25551), 21512 states have return successors, (52814), 25189 states have call predecessors, (52814), 25551 states have call successors, (52814) [2021-12-06 22:10:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438161 states to 438161 states and 614290 transitions. [2021-12-06 22:10:09,467 INFO L78 Accepts]: Start accepts. Automaton has 438161 states and 614290 transitions. Word has length 210 [2021-12-06 22:10:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:09,467 INFO L470 AbstractCegarLoop]: Abstraction has 438161 states and 614290 transitions. [2021-12-06 22:10:09,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:10:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 438161 states and 614290 transitions. [2021-12-06 22:10:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-06 22:10:10,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:10,257 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:10,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:10:10,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:10,458 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:10:10,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash 474514655, now seen corresponding path program 1 times [2021-12-06 22:10:10,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:10,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602033172] [2021-12-06 22:10:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:10,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:10:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:10:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:10:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:10:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:10:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:10:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:10:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:10:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:10:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:10:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 22:10:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-06 22:10:10,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:10,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602033172] [2021-12-06 22:10:10,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602033172] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:10,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267070306] [2021-12-06 22:10:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:10,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:10,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:10,554 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:10:10,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:10:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:10,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:10:10,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 22:10:10,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:10:10,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267070306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:10,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:10:10,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:10:10,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831614780] [2021-12-06 22:10:10,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:10,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:10:10,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:10,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:10:10,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:10:10,971 INFO L87 Difference]: Start difference. First operand 438161 states and 614290 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:11:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:05,883 INFO L93 Difference]: Finished difference Result 1297833 states and 1836874 transitions. [2021-12-06 22:11:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:11:05,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 210 [2021-12-06 22:11:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:08,936 INFO L225 Difference]: With dead ends: 1297833 [2021-12-06 22:11:08,936 INFO L226 Difference]: Without dead ends: 861815 [2021-12-06 22:11:09,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:11:09,901 INFO L933 BasicCegarLoop]: 4281 mSDtfsCounter, 4161 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4161 SdHoareTripleChecker+Valid, 4521 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:09,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4161 Valid, 4521 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:11:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861815 states. [2021-12-06 22:12:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861815 to 859229. [2021-12-06 22:12:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859229 states, 766538 states have (on average 1.3626291194957068) internal successors, (1044507), 771999 states have internal predecessors, (1044507), 49973 states have call successors, (49973), 37944 states have call predecessors, (49973), 42716 states have return successors, (125282), 49413 states have call predecessors, (125282), 49973 states have call successors, (125282) [2021-12-06 22:12:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859229 states to 859229 states and 1219762 transitions. [2021-12-06 22:12:14,388 INFO L78 Accepts]: Start accepts. Automaton has 859229 states and 1219762 transitions. Word has length 210 [2021-12-06 22:12:14,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:12:14,389 INFO L470 AbstractCegarLoop]: Abstraction has 859229 states and 1219762 transitions. [2021-12-06 22:12:14,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:12:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 859229 states and 1219762 transitions. [2021-12-06 22:12:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-06 22:12:16,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:12:16,803 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:12:16,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:12:17,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f0e32fa-ad7b-4ce3-ae1f-558342b2b2f2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:12:17,006 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:12:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:12:17,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1513727905, now seen corresponding path program 1 times [2021-12-06 22:12:17,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:12:17,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458533603] [2021-12-06 22:12:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:12:17,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:12:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:12:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:12:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:12:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:12:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:12:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:12:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:12:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:12:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:12:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:12:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 22:12:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-06 22:12:17,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:12:17,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458533603] [2021-12-06 22:12:17,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458533603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:12:17,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:12:17,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:12:17,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273591158] [2021-12-06 22:12:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:12:17,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:12:17,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:12:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:12:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:12:17,118 INFO L87 Difference]: Start difference. First operand 859229 states and 1219762 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)