./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G --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 c77578a373441dc4befdd6b2c62472e20adb967aa702c242a875876828ccf992 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:43:01,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:43:01,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:43:01,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:43:01,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:43:01,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:43:01,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:43:01,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:43:01,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:43:01,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:43:01,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:43:01,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:43:01,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:43:01,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:43:01,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:43:01,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:43:01,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:43:01,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:43:01,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:43:01,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:43:01,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:43:01,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:43:01,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:43:01,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:43:02,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:43:02,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:43:02,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:43:02,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:43:02,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:43:02,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:43:02,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:43:02,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:43:02,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:43:02,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:43:02,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:43:02,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:43:02,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:43:02,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:43:02,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:43:02,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:43:02,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:43:02,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:43:02,086 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:43:02,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:43:02,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:43:02,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:43:02,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:43:02,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:43:02,094 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:43:02,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:43:02,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:43:02,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:43:02,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:43:02,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:43:02,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:43:02,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:43:02,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:43:02,098 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:43:02,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:43:02,099 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:43:02,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:43:02,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:43:02,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:43:02,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:43:02,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:43:02,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:43:02,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:43:02,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:43:02,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:43:02,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:43:02,102 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:43:02,104 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:43:02,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:43:02,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:43:02,105 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_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c77578a373441dc4befdd6b2c62472e20adb967aa702c242a875876828ccf992 [2021-11-23 13:43:02,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:43:02,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:43:02,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:43:02,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:43:02,462 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:43:02,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c [2021-11-23 13:43:02,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/data/be25a66bc/c0b33a19437d48a28758c63475e2f1eb/FLAG790220dee [2021-11-23 13:43:03,877 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:43:03,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c [2021-11-23 13:43:03,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/data/be25a66bc/c0b33a19437d48a28758c63475e2f1eb/FLAG790220dee [2021-11-23 13:43:04,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/data/be25a66bc/c0b33a19437d48a28758c63475e2f1eb [2021-11-23 13:43:04,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:43:04,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:43:04,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:43:04,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:43:04,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:43:04,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:04" (1/1) ... [2021-11-23 13:43:04,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7833096a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:04, skipping insertion in model container [2021-11-23 13:43:04,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:04" (1/1) ... [2021-11-23 13:43:04,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:43:04,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:43:07,392 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_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[380323,380336] [2021-11-23 13:43:07,432 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_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[383339,383352] [2021-11-23 13:43:07,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:43:07,697 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:43:09,247 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_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[380323,380336] [2021-11-23 13:43:09,256 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_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[383339,383352] [2021-11-23 13:43:09,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:43:09,400 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:43:09,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09 WrapperNode [2021-11-23 13:43:09,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:43:09,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:43:09,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:43:09,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:43:09,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:09,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:10,104 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 48, calls inlined = 87, statements flattened = 13458 [2021-11-23 13:43:10,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:43:10,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:43:10,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:43:10,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:43:10,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:10,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:10,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:10,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:10,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:10,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:10,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:10,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:43:10,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:43:10,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:43:10,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:43:10,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (1/1) ... [2021-11-23 13:43:10,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:43:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:43:10,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:43:11,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a059f8b4-eda7-4a2f-b79d-6ba76e909f5a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:43:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:43:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:43:11,329 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:43:11,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:43:20,798 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:43:20,851 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:43:20,851 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-23 13:43:20,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:20 BoogieIcfgContainer [2021-11-23 13:43:20,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:43:20,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:43:20,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:43:20,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:43:20,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:43:04" (1/3) ... [2021-11-23 13:43:20,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c860af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:20, skipping insertion in model container [2021-11-23 13:43:20,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:09" (2/3) ... [2021-11-23 13:43:20,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c860af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:20, skipping insertion in model container [2021-11-23 13:43:20,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:20" (3/3) ... [2021-11-23 13:43:20,868 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.04.cil-1.c [2021-11-23 13:43:20,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:43:20,875 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 13:43:20,956 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:43:20,965 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 [2021-11-23 13:43:20,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 13:43:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:21,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:21,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:21,041 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] [2021-11-23 13:43:21,042 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash 397772622, now seen corresponding path program 1 times [2021-11-23 13:43:21,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:21,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635418706] [2021-11-23 13:43:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:21,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:21,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:21,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635418706] [2021-11-23 13:43:21,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635418706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:21,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:21,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:43:21,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989869278] [2021-11-23 13:43:21,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:21,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:21,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:21,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:21,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:21,365 INFO L87 Difference]: Start difference. First operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:21,844 INFO L93 Difference]: Finished difference Result 5545 states and 9968 transitions. [2021-11-23 13:43:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:21,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:21,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:21,902 INFO L225 Difference]: With dead ends: 5545 [2021-11-23 13:43:21,903 INFO L226 Difference]: Without dead ends: 2871 [2021-11-23 13:43:21,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:21,919 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 4596 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4596 SdHoareTripleChecker+Valid, 5190 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:21,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4596 Valid, 5190 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2021-11-23 13:43:22,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2869. [2021-11-23 13:43:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.769445413324032) internal successors, (5073), 2868 states have internal predecessors, (5073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5073 transitions. [2021-11-23 13:43:22,131 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5073 transitions. Word has length 77 [2021-11-23 13:43:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:22,132 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5073 transitions. [2021-11-23 13:43:22,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5073 transitions. [2021-11-23 13:43:22,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:22,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:22,138 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] [2021-11-23 13:43:22,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:43:22,139 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:22,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash -193646194, now seen corresponding path program 1 times [2021-11-23 13:43:22,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:22,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489546257] [2021-11-23 13:43:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:22,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:22,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:22,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489546257] [2021-11-23 13:43:22,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489546257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:22,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:22,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:43:22,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838251652] [2021-11-23 13:43:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:22,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:22,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:22,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:22,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:22,227 INFO L87 Difference]: Start difference. First operand 2869 states and 5073 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:22,331 INFO L93 Difference]: Finished difference Result 3605 states and 6170 transitions. [2021-11-23 13:43:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:22,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:22,355 INFO L225 Difference]: With dead ends: 3605 [2021-11-23 13:43:22,355 INFO L226 Difference]: Without dead ends: 2869 [2021-11-23 13:43:22,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:22,360 INFO L933 BasicCegarLoop]: 4586 mSDtfsCounter, 4579 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4579 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:22,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4579 Valid, 4586 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:22,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2021-11-23 13:43:22,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2869. [2021-11-23 13:43:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.766655040111615) internal successors, (5065), 2868 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5065 transitions. [2021-11-23 13:43:22,477 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5065 transitions. Word has length 77 [2021-11-23 13:43:22,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:22,477 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5065 transitions. [2021-11-23 13:43:22,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:22,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5065 transitions. [2021-11-23 13:43:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:22,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:22,487 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] [2021-11-23 13:43:22,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:43:22,490 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:22,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:22,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2013839538, now seen corresponding path program 1 times [2021-11-23 13:43:22,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:22,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019776571] [2021-11-23 13:43:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:22,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:22,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:22,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019776571] [2021-11-23 13:43:22,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019776571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:22,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:22,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:43:22,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387993385] [2021-11-23 13:43:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:22,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:22,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:22,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:22,608 INFO L87 Difference]: Start difference. First operand 2869 states and 5065 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:22,721 INFO L93 Difference]: Finished difference Result 3604 states and 6153 transitions. [2021-11-23 13:43:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:22,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:22,745 INFO L225 Difference]: With dead ends: 3604 [2021-11-23 13:43:22,745 INFO L226 Difference]: Without dead ends: 2869 [2021-11-23 13:43:22,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:22,752 INFO L933 BasicCegarLoop]: 4581 mSDtfsCounter, 4573 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4573 SdHoareTripleChecker+Valid, 4581 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:22,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4573 Valid, 4581 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2021-11-23 13:43:22,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2869. [2021-11-23 13:43:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.7638646668991977) internal successors, (5057), 2868 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:22,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5057 transitions. [2021-11-23 13:43:22,870 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5057 transitions. Word has length 77 [2021-11-23 13:43:22,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:22,872 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5057 transitions. [2021-11-23 13:43:22,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:22,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5057 transitions. [2021-11-23 13:43:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:22,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:22,876 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] [2021-11-23 13:43:22,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:43:22,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash 421296526, now seen corresponding path program 1 times [2021-11-23 13:43:22,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:22,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341815094] [2021-11-23 13:43:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:22,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:23,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:23,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341815094] [2021-11-23 13:43:23,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341815094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:23,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:23,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:23,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696729100] [2021-11-23 13:43:23,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:23,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:23,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:23,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:23,026 INFO L87 Difference]: Start difference. First operand 2869 states and 5057 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:23,257 INFO L93 Difference]: Finished difference Result 4291 states and 7147 transitions. [2021-11-23 13:43:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:23,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:23,287 INFO L225 Difference]: With dead ends: 4291 [2021-11-23 13:43:23,287 INFO L226 Difference]: Without dead ends: 3557 [2021-11-23 13:43:23,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:23,302 INFO L933 BasicCegarLoop]: 4586 mSDtfsCounter, 9669 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9669 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:23,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9669 Valid, 5117 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-11-23 13:43:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2869. [2021-11-23 13:43:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.7628182769445413) internal successors, (5054), 2868 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5054 transitions. [2021-11-23 13:43:23,546 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5054 transitions. Word has length 77 [2021-11-23 13:43:23,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:23,547 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5054 transitions. [2021-11-23 13:43:23,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5054 transitions. [2021-11-23 13:43:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:23,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:23,550 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] [2021-11-23 13:43:23,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:43:23,550 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 3899920, now seen corresponding path program 1 times [2021-11-23 13:43:23,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:23,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528697414] [2021-11-23 13:43:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:23,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:23,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:23,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528697414] [2021-11-23 13:43:23,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528697414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:23,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:23,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:23,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165403436] [2021-11-23 13:43:23,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:23,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:23,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:23,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:23,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:23,671 INFO L87 Difference]: Start difference. First operand 2869 states and 5054 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:23,923 INFO L93 Difference]: Finished difference Result 4289 states and 7136 transitions. [2021-11-23 13:43:23,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:23,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:23,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:23,952 INFO L225 Difference]: With dead ends: 4289 [2021-11-23 13:43:23,952 INFO L226 Difference]: Without dead ends: 3556 [2021-11-23 13:43:23,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:23,956 INFO L933 BasicCegarLoop]: 5100 mSDtfsCounter, 9142 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9142 SdHoareTripleChecker+Valid, 5628 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:23,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9142 Valid, 5628 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:23,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2021-11-23 13:43:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 2869. [2021-11-23 13:43:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.7617718869898848) internal successors, (5051), 2868 states have internal predecessors, (5051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5051 transitions. [2021-11-23 13:43:24,087 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5051 transitions. Word has length 77 [2021-11-23 13:43:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:24,089 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5051 transitions. [2021-11-23 13:43:24,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5051 transitions. [2021-11-23 13:43:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:24,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:24,100 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] [2021-11-23 13:43:24,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:43:24,102 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:24,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:24,103 INFO L85 PathProgramCache]: Analyzing trace with hash 683172174, now seen corresponding path program 1 times [2021-11-23 13:43:24,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:24,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333355343] [2021-11-23 13:43:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:24,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:24,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:24,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333355343] [2021-11-23 13:43:24,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333355343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:24,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:24,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:24,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957019532] [2021-11-23 13:43:24,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:24,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:24,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:24,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:24,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:24,185 INFO L87 Difference]: Start difference. First operand 2869 states and 5051 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:24,477 INFO L93 Difference]: Finished difference Result 4215 states and 7023 transitions. [2021-11-23 13:43:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:24,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:24,502 INFO L225 Difference]: With dead ends: 4215 [2021-11-23 13:43:24,502 INFO L226 Difference]: Without dead ends: 3483 [2021-11-23 13:43:24,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:24,507 INFO L933 BasicCegarLoop]: 5016 mSDtfsCounter, 9083 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9083 SdHoareTripleChecker+Valid, 5525 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:24,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9083 Valid, 5525 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2021-11-23 13:43:24,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 2869. [2021-11-23 13:43:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.7607254970352284) internal successors, (5048), 2868 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5048 transitions. [2021-11-23 13:43:24,664 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5048 transitions. Word has length 77 [2021-11-23 13:43:24,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:24,664 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5048 transitions. [2021-11-23 13:43:24,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5048 transitions. [2021-11-23 13:43:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:24,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:24,678 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] [2021-11-23 13:43:24,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:43:24,678 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:24,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1650220464, now seen corresponding path program 1 times [2021-11-23 13:43:24,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:24,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920514870] [2021-11-23 13:43:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:24,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:24,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:24,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920514870] [2021-11-23 13:43:24,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920514870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:24,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:24,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:43:24,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252585798] [2021-11-23 13:43:24,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:24,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:24,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:24,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:24,753 INFO L87 Difference]: Start difference. First operand 2869 states and 5048 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:24,894 INFO L93 Difference]: Finished difference Result 3599 states and 6113 transitions. [2021-11-23 13:43:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:24,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:24,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:24,915 INFO L225 Difference]: With dead ends: 3599 [2021-11-23 13:43:24,916 INFO L226 Difference]: Without dead ends: 2869 [2021-11-23 13:43:24,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:24,919 INFO L933 BasicCegarLoop]: 4556 mSDtfsCounter, 4498 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 4604 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:24,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 4604 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:24,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2021-11-23 13:43:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2869. [2021-11-23 13:43:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.7537495640041856) internal successors, (5028), 2868 states have internal predecessors, (5028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5028 transitions. [2021-11-23 13:43:25,050 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5028 transitions. Word has length 77 [2021-11-23 13:43:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:25,051 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5028 transitions. [2021-11-23 13:43:25,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5028 transitions. [2021-11-23 13:43:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:25,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:25,052 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] [2021-11-23 13:43:25,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:43:25,053 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1185135087, now seen corresponding path program 1 times [2021-11-23 13:43:25,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:25,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376231388] [2021-11-23 13:43:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:25,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:25,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:25,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376231388] [2021-11-23 13:43:25,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376231388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:25,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:25,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:25,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824051129] [2021-11-23 13:43:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:25,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:25,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:25,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:25,093 INFO L87 Difference]: Start difference. First operand 2869 states and 5028 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:25,473 INFO L93 Difference]: Finished difference Result 4209 states and 6950 transitions. [2021-11-23 13:43:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:25,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:25,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:25,491 INFO L225 Difference]: With dead ends: 4209 [2021-11-23 13:43:25,491 INFO L226 Difference]: Without dead ends: 3480 [2021-11-23 13:43:25,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:25,495 INFO L933 BasicCegarLoop]: 4987 mSDtfsCounter, 9053 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9053 SdHoareTripleChecker+Valid, 5480 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:25,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9053 Valid, 5480 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-11-23 13:43:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2869. [2021-11-23 13:43:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.7527031740495291) internal successors, (5025), 2868 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5025 transitions. [2021-11-23 13:43:25,659 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5025 transitions. Word has length 77 [2021-11-23 13:43:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:25,660 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5025 transitions. [2021-11-23 13:43:25,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5025 transitions. [2021-11-23 13:43:25,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:25,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:25,662 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] [2021-11-23 13:43:25,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:43:25,663 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:25,664 INFO L85 PathProgramCache]: Analyzing trace with hash -751406001, now seen corresponding path program 1 times [2021-11-23 13:43:25,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:25,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526496480] [2021-11-23 13:43:25,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:25,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:25,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:25,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526496480] [2021-11-23 13:43:25,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526496480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:25,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:25,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:25,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826369521] [2021-11-23 13:43:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:25,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:25,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:25,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:25,706 INFO L87 Difference]: Start difference. First operand 2869 states and 5025 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:26,026 INFO L93 Difference]: Finished difference Result 4207 states and 6939 transitions. [2021-11-23 13:43:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:26,038 INFO L225 Difference]: With dead ends: 4207 [2021-11-23 13:43:26,038 INFO L226 Difference]: Without dead ends: 3479 [2021-11-23 13:43:26,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:26,042 INFO L933 BasicCegarLoop]: 4982 mSDtfsCounter, 9048 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9048 SdHoareTripleChecker+Valid, 5472 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:26,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9048 Valid, 5472 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2021-11-23 13:43:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 2869. [2021-11-23 13:43:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2867 states have (on average 1.7516567840948727) internal successors, (5022), 2868 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5022 transitions. [2021-11-23 13:43:26,208 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5022 transitions. Word has length 77 [2021-11-23 13:43:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:26,209 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5022 transitions. [2021-11-23 13:43:26,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5022 transitions. [2021-11-23 13:43:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:43:26,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:26,211 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] [2021-11-23 13:43:26,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:43:26,212 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash 509511249, now seen corresponding path program 1 times [2021-11-23 13:43:26,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369622616] [2021-11-23 13:43:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:26,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:26,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:26,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:26,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369622616] [2021-11-23 13:43:26,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369622616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:26,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:26,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:43:26,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714799630] [2021-11-23 13:43:26,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:26,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:26,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:26,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:26,257 INFO L87 Difference]: Start difference. First operand 2869 states and 5022 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:26,523 INFO L93 Difference]: Finished difference Result 4254 states and 6989 transitions. [2021-11-23 13:43:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:43:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:26,534 INFO L225 Difference]: With dead ends: 4254 [2021-11-23 13:43:26,535 INFO L226 Difference]: Without dead ends: 3528 [2021-11-23 13:43:26,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:26,539 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 4510 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 5046 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:26,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4510 Valid, 5046 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2021-11-23 13:43:26,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3460. [2021-11-23 13:43:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 3458 states have (on average 1.6905725853094273) internal successors, (5846), 3459 states have internal predecessors, (5846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 5846 transitions. [2021-11-23 13:43:26,758 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 5846 transitions. Word has length 77 [2021-11-23 13:43:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:26,758 INFO L470 AbstractCegarLoop]: Abstraction has 3460 states and 5846 transitions. [2021-11-23 13:43:26,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 5846 transitions. [2021-11-23 13:43:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:26,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:26,763 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:26,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:43:26,764 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:26,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash 455168537, now seen corresponding path program 1 times [2021-11-23 13:43:26,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:26,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194872472] [2021-11-23 13:43:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:26,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:26,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:26,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194872472] [2021-11-23 13:43:26,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194872472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:26,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:26,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:26,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245350264] [2021-11-23 13:43:26,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:26,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:26,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:26,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:26,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:26,836 INFO L87 Difference]: Start difference. First operand 3460 states and 5846 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:27,359 INFO L93 Difference]: Finished difference Result 6026 states and 9469 transitions. [2021-11-23 13:43:27,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:27,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:27,374 INFO L225 Difference]: With dead ends: 6026 [2021-11-23 13:43:27,374 INFO L226 Difference]: Without dead ends: 4713 [2021-11-23 13:43:27,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:27,380 INFO L933 BasicCegarLoop]: 4536 mSDtfsCounter, 1991 mSDsluCounter, 14198 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 18734 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:27,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1991 Valid, 18734 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2021-11-23 13:43:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 3499. [2021-11-23 13:43:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 3497 states have (on average 1.6794395195882186) internal successors, (5873), 3498 states have internal predecessors, (5873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 5873 transitions. [2021-11-23 13:43:27,625 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 5873 transitions. Word has length 124 [2021-11-23 13:43:27,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:27,625 INFO L470 AbstractCegarLoop]: Abstraction has 3499 states and 5873 transitions. [2021-11-23 13:43:27,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 5873 transitions. [2021-11-23 13:43:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:27,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:27,630 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:27,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:43:27,630 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:27,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1451234729, now seen corresponding path program 1 times [2021-11-23 13:43:27,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:27,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314773203] [2021-11-23 13:43:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:27,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:27,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:27,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314773203] [2021-11-23 13:43:27,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314773203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:27,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:27,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:27,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308497891] [2021-11-23 13:43:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:27,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:27,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:27,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:27,690 INFO L87 Difference]: Start difference. First operand 3499 states and 5873 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:28,158 INFO L93 Difference]: Finished difference Result 5805 states and 9073 transitions. [2021-11-23 13:43:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:28,171 INFO L225 Difference]: With dead ends: 5805 [2021-11-23 13:43:28,171 INFO L226 Difference]: Without dead ends: 4467 [2021-11-23 13:43:28,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:28,177 INFO L933 BasicCegarLoop]: 4576 mSDtfsCounter, 1454 mSDsluCounter, 13028 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 17604 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:28,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 17604 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2021-11-23 13:43:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 3511. [2021-11-23 13:43:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 3509 states have (on average 1.67113137646053) internal successors, (5864), 3510 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 5864 transitions. [2021-11-23 13:43:28,375 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 5864 transitions. Word has length 124 [2021-11-23 13:43:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:28,376 INFO L470 AbstractCegarLoop]: Abstraction has 3511 states and 5864 transitions. [2021-11-23 13:43:28,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 5864 transitions. [2021-11-23 13:43:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:28,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:28,380 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:28,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:43:28,380 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1159917395, now seen corresponding path program 1 times [2021-11-23 13:43:28,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:28,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128164028] [2021-11-23 13:43:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:28,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:28,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:28,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128164028] [2021-11-23 13:43:28,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128164028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:28,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:28,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:28,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555984610] [2021-11-23 13:43:28,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:28,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:28,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:28,435 INFO L87 Difference]: Start difference. First operand 3511 states and 5864 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:29,024 INFO L93 Difference]: Finished difference Result 6781 states and 10381 transitions. [2021-11-23 13:43:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:29,039 INFO L225 Difference]: With dead ends: 6781 [2021-11-23 13:43:29,039 INFO L226 Difference]: Without dead ends: 5438 [2021-11-23 13:43:29,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:29,045 INFO L933 BasicCegarLoop]: 4684 mSDtfsCounter, 1448 mSDsluCounter, 14138 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 18822 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:29,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 18822 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5438 states. [2021-11-23 13:43:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5438 to 3586. [2021-11-23 13:43:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3584 states have (on average 1.6570870535714286) internal successors, (5939), 3585 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:29,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5939 transitions. [2021-11-23 13:43:29,274 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5939 transitions. Word has length 124 [2021-11-23 13:43:29,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:29,275 INFO L470 AbstractCegarLoop]: Abstraction has 3586 states and 5939 transitions. [2021-11-23 13:43:29,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5939 transitions. [2021-11-23 13:43:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:29,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:29,279 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:29,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:43:29,279 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:29,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:29,280 INFO L85 PathProgramCache]: Analyzing trace with hash 17414929, now seen corresponding path program 1 times [2021-11-23 13:43:29,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:29,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021216757] [2021-11-23 13:43:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:29,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:29,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:29,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021216757] [2021-11-23 13:43:29,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021216757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:29,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:29,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:43:29,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69637392] [2021-11-23 13:43:29,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:29,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:29,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:29,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:29,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:29,359 INFO L87 Difference]: Start difference. First operand 3586 states and 5939 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:29,762 INFO L93 Difference]: Finished difference Result 6206 states and 9488 transitions. [2021-11-23 13:43:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:29,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:29,775 INFO L225 Difference]: With dead ends: 6206 [2021-11-23 13:43:29,776 INFO L226 Difference]: Without dead ends: 4793 [2021-11-23 13:43:29,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:29,781 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 4433 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4433 SdHoareTripleChecker+Valid, 5028 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:29,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4433 Valid, 5028 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2021-11-23 13:43:30,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4783. [2021-11-23 13:43:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4783 states, 4781 states have (on average 1.5768667642752563) internal successors, (7539), 4782 states have internal predecessors, (7539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4783 states to 4783 states and 7539 transitions. [2021-11-23 13:43:30,272 INFO L78 Accepts]: Start accepts. Automaton has 4783 states and 7539 transitions. Word has length 124 [2021-11-23 13:43:30,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:30,272 INFO L470 AbstractCegarLoop]: Abstraction has 4783 states and 7539 transitions. [2021-11-23 13:43:30,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:30,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4783 states and 7539 transitions. [2021-11-23 13:43:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:30,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:30,277 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:30,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:43:30,278 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:30,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1259737744, now seen corresponding path program 1 times [2021-11-23 13:43:30,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:30,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687331978] [2021-11-23 13:43:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:30,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:30,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:30,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687331978] [2021-11-23 13:43:30,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687331978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:30,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:30,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:30,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437743133] [2021-11-23 13:43:30,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:30,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:30,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:30,343 INFO L87 Difference]: Start difference. First operand 4783 states and 7539 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:31,069 INFO L93 Difference]: Finished difference Result 9179 states and 13493 transitions. [2021-11-23 13:43:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:31,088 INFO L225 Difference]: With dead ends: 9179 [2021-11-23 13:43:31,088 INFO L226 Difference]: Without dead ends: 6573 [2021-11-23 13:43:31,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:31,099 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 1314 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 18363 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:31,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 18363 Invalid, 133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6573 states. [2021-11-23 13:43:31,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6573 to 4855. [2021-11-23 13:43:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 4853 states have (on average 1.5639810426540284) internal successors, (7590), 4854 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 7590 transitions. [2021-11-23 13:43:31,475 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 7590 transitions. Word has length 124 [2021-11-23 13:43:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:31,476 INFO L470 AbstractCegarLoop]: Abstraction has 4855 states and 7590 transitions. [2021-11-23 13:43:31,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 7590 transitions. [2021-11-23 13:43:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:31,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:31,480 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:31,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:43:31,481 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1190163348, now seen corresponding path program 1 times [2021-11-23 13:43:31,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:31,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967660037] [2021-11-23 13:43:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:31,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:31,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:31,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967660037] [2021-11-23 13:43:31,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967660037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:31,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:31,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:31,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717626319] [2021-11-23 13:43:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:31,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:31,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:31,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:31,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:31,543 INFO L87 Difference]: Start difference. First operand 4855 states and 7590 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:31,952 INFO L93 Difference]: Finished difference Result 7527 states and 11145 transitions. [2021-11-23 13:43:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:31,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:31,965 INFO L225 Difference]: With dead ends: 7527 [2021-11-23 13:43:31,966 INFO L226 Difference]: Without dead ends: 4855 [2021-11-23 13:43:31,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:31,972 INFO L933 BasicCegarLoop]: 4536 mSDtfsCounter, 9035 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9035 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:31,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9035 Valid, 4536 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2021-11-23 13:43:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4855. [2021-11-23 13:43:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 4853 states have (on average 1.5604780548114567) internal successors, (7573), 4854 states have internal predecessors, (7573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 7573 transitions. [2021-11-23 13:43:32,394 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 7573 transitions. Word has length 124 [2021-11-23 13:43:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:32,394 INFO L470 AbstractCegarLoop]: Abstraction has 4855 states and 7573 transitions. [2021-11-23 13:43:32,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 7573 transitions. [2021-11-23 13:43:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:32,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:32,399 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:32,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:43:32,399 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:32,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:32,400 INFO L85 PathProgramCache]: Analyzing trace with hash -236223190, now seen corresponding path program 1 times [2021-11-23 13:43:32,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:32,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509122860] [2021-11-23 13:43:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:32,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:32,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509122860] [2021-11-23 13:43:32,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509122860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:32,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:32,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:32,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661182051] [2021-11-23 13:43:32,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:32,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:32,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:32,447 INFO L87 Difference]: Start difference. First operand 4855 states and 7573 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:33,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:33,029 INFO L93 Difference]: Finished difference Result 8803 states and 12814 transitions. [2021-11-23 13:43:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:33,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:33,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:33,045 INFO L225 Difference]: With dead ends: 8803 [2021-11-23 13:43:33,045 INFO L226 Difference]: Without dead ends: 6132 [2021-11-23 13:43:33,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:33,052 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 9388 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9388 SdHoareTripleChecker+Valid, 5123 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:33,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9388 Valid, 5123 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:33,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2021-11-23 13:43:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 4789. [2021-11-23 13:43:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 4787 states have (on average 1.5554627115103405) internal successors, (7446), 4788 states have internal predecessors, (7446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 7446 transitions. [2021-11-23 13:43:33,425 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 7446 transitions. Word has length 124 [2021-11-23 13:43:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:33,426 INFO L470 AbstractCegarLoop]: Abstraction has 4789 states and 7446 transitions. [2021-11-23 13:43:33,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 7446 transitions. [2021-11-23 13:43:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:33,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:33,430 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:33,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:43:33,431 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:33,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1452376916, now seen corresponding path program 1 times [2021-11-23 13:43:33,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:33,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836440504] [2021-11-23 13:43:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:33,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:33,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:33,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836440504] [2021-11-23 13:43:33,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836440504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:33,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:33,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:33,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319545341] [2021-11-23 13:43:33,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:33,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:33,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:33,477 INFO L87 Difference]: Start difference. First operand 4789 states and 7446 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:34,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:34,131 INFO L93 Difference]: Finished difference Result 9231 states and 13201 transitions. [2021-11-23 13:43:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:34,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:34,149 INFO L225 Difference]: With dead ends: 9231 [2021-11-23 13:43:34,149 INFO L226 Difference]: Without dead ends: 6593 [2021-11-23 13:43:34,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:34,156 INFO L933 BasicCegarLoop]: 4541 mSDtfsCounter, 9346 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9346 SdHoareTripleChecker+Valid, 5333 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:34,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9346 Valid, 5333 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6593 states. [2021-11-23 13:43:34,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6593 to 5232. [2021-11-23 13:43:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5230 states have (on average 1.5166347992351816) internal successors, (7932), 5231 states have internal predecessors, (7932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:34,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 7932 transitions. [2021-11-23 13:43:34,601 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 7932 transitions. Word has length 124 [2021-11-23 13:43:34,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:34,602 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 7932 transitions. [2021-11-23 13:43:34,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:34,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 7932 transitions. [2021-11-23 13:43:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:34,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:34,606 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:34,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 13:43:34,606 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:34,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:34,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2110622954, now seen corresponding path program 1 times [2021-11-23 13:43:34,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:34,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317897567] [2021-11-23 13:43:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:34,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:34,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:34,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317897567] [2021-11-23 13:43:34,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317897567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:34,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:34,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:34,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462784385] [2021-11-23 13:43:34,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:34,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:34,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:34,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:34,661 INFO L87 Difference]: Start difference. First operand 5232 states and 7932 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:35,713 INFO L93 Difference]: Finished difference Result 10788 states and 15031 transitions. [2021-11-23 13:43:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:35,737 INFO L225 Difference]: With dead ends: 10788 [2021-11-23 13:43:35,737 INFO L226 Difference]: Without dead ends: 7754 [2021-11-23 13:43:35,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:35,746 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 9300 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9300 SdHoareTripleChecker+Valid, 5020 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:35,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9300 Valid, 5020 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7754 states. [2021-11-23 13:43:36,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7754 to 5094. [2021-11-23 13:43:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5092 states have (on average 1.5092301649646505) internal successors, (7685), 5093 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 7685 transitions. [2021-11-23 13:43:36,304 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 7685 transitions. Word has length 124 [2021-11-23 13:43:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:36,305 INFO L470 AbstractCegarLoop]: Abstraction has 5094 states and 7685 transitions. [2021-11-23 13:43:36,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 7685 transitions. [2021-11-23 13:43:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:36,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:36,309 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:36,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 13:43:36,310 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:36,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2061125445, now seen corresponding path program 1 times [2021-11-23 13:43:36,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:36,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673679075] [2021-11-23 13:43:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:36,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:36,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:36,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673679075] [2021-11-23 13:43:36,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673679075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:36,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:36,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:36,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356545195] [2021-11-23 13:43:36,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:36,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:36,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:36,373 INFO L87 Difference]: Start difference. First operand 5094 states and 7685 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:37,147 INFO L93 Difference]: Finished difference Result 10411 states and 14376 transitions. [2021-11-23 13:43:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:37,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:37,166 INFO L225 Difference]: With dead ends: 10411 [2021-11-23 13:43:37,166 INFO L226 Difference]: Without dead ends: 7546 [2021-11-23 13:43:37,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:37,175 INFO L933 BasicCegarLoop]: 4483 mSDtfsCounter, 9251 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9251 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:37,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9251 Valid, 4970 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7546 states. [2021-11-23 13:43:37,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7546 to 5022. [2021-11-23 13:43:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5022 states, 5020 states have (on average 1.503585657370518) internal successors, (7548), 5021 states have internal predecessors, (7548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 7548 transitions. [2021-11-23 13:43:37,609 INFO L78 Accepts]: Start accepts. Automaton has 5022 states and 7548 transitions. Word has length 124 [2021-11-23 13:43:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:37,609 INFO L470 AbstractCegarLoop]: Abstraction has 5022 states and 7548 transitions. [2021-11-23 13:43:37,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 5022 states and 7548 transitions. [2021-11-23 13:43:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:37,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:37,613 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:37,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 13:43:37,614 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:37,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:37,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1643728839, now seen corresponding path program 1 times [2021-11-23 13:43:37,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:37,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681526354] [2021-11-23 13:43:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:37,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:37,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:37,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681526354] [2021-11-23 13:43:37,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681526354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:37,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:37,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:37,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777346555] [2021-11-23 13:43:37,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:37,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:37,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:37,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:37,696 INFO L87 Difference]: Start difference. First operand 5022 states and 7548 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:38,558 INFO L93 Difference]: Finished difference Result 11794 states and 15938 transitions. [2021-11-23 13:43:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:38,577 INFO L225 Difference]: With dead ends: 11794 [2021-11-23 13:43:38,577 INFO L226 Difference]: Without dead ends: 8933 [2021-11-23 13:43:38,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:38,584 INFO L933 BasicCegarLoop]: 4472 mSDtfsCounter, 9132 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9132 SdHoareTripleChecker+Valid, 5459 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:38,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9132 Valid, 5459 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8933 states. [2021-11-23 13:43:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8933 to 7422. [2021-11-23 13:43:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7422 states, 7420 states have (on average 1.414690026954178) internal successors, (10497), 7421 states have internal predecessors, (10497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7422 states to 7422 states and 10497 transitions. [2021-11-23 13:43:39,158 INFO L78 Accepts]: Start accepts. Automaton has 7422 states and 10497 transitions. Word has length 124 [2021-11-23 13:43:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:39,159 INFO L470 AbstractCegarLoop]: Abstraction has 7422 states and 10497 transitions. [2021-11-23 13:43:39,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7422 states and 10497 transitions. [2021-11-23 13:43:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:39,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:39,164 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:39,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 13:43:39,165 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash -511785562, now seen corresponding path program 1 times [2021-11-23 13:43:39,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:39,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275513706] [2021-11-23 13:43:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:39,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:39,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:39,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275513706] [2021-11-23 13:43:39,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275513706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:39,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:39,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:39,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532528651] [2021-11-23 13:43:39,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:39,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:39,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:39,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:39,220 INFO L87 Difference]: Start difference. First operand 7422 states and 10497 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:39,983 INFO L93 Difference]: Finished difference Result 14890 states and 19905 transitions. [2021-11-23 13:43:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:40,004 INFO L225 Difference]: With dead ends: 14890 [2021-11-23 13:43:40,005 INFO L226 Difference]: Without dead ends: 9636 [2021-11-23 13:43:40,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:40,015 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 1460 mSDsluCounter, 13036 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 17496 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:40,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 17496 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:40,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9636 states. [2021-11-23 13:43:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9636 to 7434. [2021-11-23 13:43:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7434 states, 7432 states have (on average 1.402448869752422) internal successors, (10423), 7433 states have internal predecessors, (10423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7434 states to 7434 states and 10423 transitions. [2021-11-23 13:43:40,729 INFO L78 Accepts]: Start accepts. Automaton has 7434 states and 10423 transitions. Word has length 124 [2021-11-23 13:43:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:40,729 INFO L470 AbstractCegarLoop]: Abstraction has 7434 states and 10423 transitions. [2021-11-23 13:43:40,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7434 states and 10423 transitions. [2021-11-23 13:43:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:40,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:40,735 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:40,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 13:43:40,736 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:40,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1541144860, now seen corresponding path program 1 times [2021-11-23 13:43:40,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:40,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653363685] [2021-11-23 13:43:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:40,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:40,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:40,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653363685] [2021-11-23 13:43:40,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653363685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:40,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:40,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:40,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172148425] [2021-11-23 13:43:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:40,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:40,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:40,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:40,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:40,797 INFO L87 Difference]: Start difference. First operand 7434 states and 10423 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:41,710 INFO L93 Difference]: Finished difference Result 17419 states and 22465 transitions. [2021-11-23 13:43:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:41,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:41,733 INFO L225 Difference]: With dead ends: 17419 [2021-11-23 13:43:41,734 INFO L226 Difference]: Without dead ends: 12213 [2021-11-23 13:43:41,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:41,745 INFO L933 BasicCegarLoop]: 4673 mSDtfsCounter, 4304 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:41,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4304 Valid, 5178 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:41,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12213 states. [2021-11-23 13:43:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12213 to 12211. [2021-11-23 13:43:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12211 states, 12209 states have (on average 1.315013514620362) internal successors, (16055), 12210 states have internal predecessors, (16055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12211 states to 12211 states and 16055 transitions. [2021-11-23 13:43:42,960 INFO L78 Accepts]: Start accepts. Automaton has 12211 states and 16055 transitions. Word has length 124 [2021-11-23 13:43:42,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:42,960 INFO L470 AbstractCegarLoop]: Abstraction has 12211 states and 16055 transitions. [2021-11-23 13:43:42,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 12211 states and 16055 transitions. [2021-11-23 13:43:42,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 13:43:42,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:42,969 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:42,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 13:43:42,969 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:42,970 INFO L85 PathProgramCache]: Analyzing trace with hash 911346722, now seen corresponding path program 1 times [2021-11-23 13:43:42,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:42,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072525708] [2021-11-23 13:43:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:42,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:42,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:42,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072525708] [2021-11-23 13:43:42,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072525708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:42,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:42,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:42,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252479517] [2021-11-23 13:43:42,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:42,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:42,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:43,000 INFO L87 Difference]: Start difference. First operand 12211 states and 16055 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:43,896 INFO L93 Difference]: Finished difference Result 22093 states and 27920 transitions. [2021-11-23 13:43:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:43,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 13:43:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:43,917 INFO L225 Difference]: With dead ends: 22093 [2021-11-23 13:43:43,917 INFO L226 Difference]: Without dead ends: 12110 [2021-11-23 13:43:43,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:43,934 INFO L933 BasicCegarLoop]: 4482 mSDtfsCounter, 520 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 8440 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:43,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 8440 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:43,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12110 states. [2021-11-23 13:43:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12110 to 12110. [2021-11-23 13:43:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12110 states, 12108 states have (on average 1.3166501486620417) internal successors, (15942), 12109 states have internal predecessors, (15942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12110 states to 12110 states and 15942 transitions. [2021-11-23 13:43:45,191 INFO L78 Accepts]: Start accepts. Automaton has 12110 states and 15942 transitions. Word has length 124 [2021-11-23 13:43:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:45,191 INFO L470 AbstractCegarLoop]: Abstraction has 12110 states and 15942 transitions. [2021-11-23 13:43:45,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12110 states and 15942 transitions. [2021-11-23 13:43:45,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 13:43:45,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:45,198 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:45,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 13:43:45,199 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:45,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:45,200 INFO L85 PathProgramCache]: Analyzing trace with hash 756354220, now seen corresponding path program 1 times [2021-11-23 13:43:45,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:45,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392373709] [2021-11-23 13:43:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:45,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:45,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:45,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392373709] [2021-11-23 13:43:45,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392373709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:45,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:45,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:45,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189227883] [2021-11-23 13:43:45,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:45,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:45,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:45,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:45,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:45,266 INFO L87 Difference]: Start difference. First operand 12110 states and 15942 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:47,030 INFO L93 Difference]: Finished difference Result 30454 states and 37894 transitions. [2021-11-23 13:43:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-23 13:43:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:47,054 INFO L225 Difference]: With dead ends: 30454 [2021-11-23 13:43:47,054 INFO L226 Difference]: Without dead ends: 20572 [2021-11-23 13:43:47,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:47,069 INFO L933 BasicCegarLoop]: 4651 mSDtfsCounter, 4306 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:47,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 5155 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:47,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20572 states. [2021-11-23 13:43:48,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20572 to 20570. [2021-11-23 13:43:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20570 states, 20568 states have (on average 1.2615713730066123) internal successors, (25948), 20569 states have internal predecessors, (25948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20570 states to 20570 states and 25948 transitions. [2021-11-23 13:43:48,979 INFO L78 Accepts]: Start accepts. Automaton has 20570 states and 25948 transitions. Word has length 125 [2021-11-23 13:43:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:48,979 INFO L470 AbstractCegarLoop]: Abstraction has 20570 states and 25948 transitions. [2021-11-23 13:43:48,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 20570 states and 25948 transitions. [2021-11-23 13:43:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 13:43:48,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:48,990 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:48,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 13:43:48,991 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:48,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1086121494, now seen corresponding path program 1 times [2021-11-23 13:43:48,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:48,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955570262] [2021-11-23 13:43:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:48,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:43:49,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:49,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955570262] [2021-11-23 13:43:49,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955570262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:49,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:49,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:49,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438749016] [2021-11-23 13:43:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:49,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:49,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:49,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:49,023 INFO L87 Difference]: Start difference. First operand 20570 states and 25948 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:50,816 INFO L93 Difference]: Finished difference Result 38812 states and 47709 transitions. [2021-11-23 13:43:50,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:50,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-23 13:43:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:50,840 INFO L225 Difference]: With dead ends: 38812 [2021-11-23 13:43:50,841 INFO L226 Difference]: Without dead ends: 20470 [2021-11-23 13:43:50,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:50,859 INFO L933 BasicCegarLoop]: 4481 mSDtfsCounter, 518 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 8439 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:50,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 8439 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20470 states. [2021-11-23 13:43:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20470 to 20470. [2021-11-23 13:43:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20470 states, 20468 states have (on average 1.262311901504788) internal successors, (25837), 20469 states have internal predecessors, (25837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20470 states to 20470 states and 25837 transitions. [2021-11-23 13:43:52,716 INFO L78 Accepts]: Start accepts. Automaton has 20470 states and 25837 transitions. Word has length 125 [2021-11-23 13:43:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:52,716 INFO L470 AbstractCegarLoop]: Abstraction has 20470 states and 25837 transitions. [2021-11-23 13:43:52,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 20470 states and 25837 transitions. [2021-11-23 13:43:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-23 13:43:52,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:52,725 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:52,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 13:43:52,726 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:43:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:52,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1709184724, now seen corresponding path program 1 times [2021-11-23 13:43:52,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:52,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520593343] [2021-11-23 13:43:52,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:52,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:52,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:52,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520593343] [2021-11-23 13:43:52,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520593343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:52,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:52,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:43:52,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045829949] [2021-11-23 13:43:52,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:52,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:43:52,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:43:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:52,780 INFO L87 Difference]: Start difference. First operand 20470 states and 25837 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:56,577 INFO L93 Difference]: Finished difference Result 54253 states and 66139 transitions. [2021-11-23 13:43:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:43:56,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-23 13:43:56,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:56,632 INFO L225 Difference]: With dead ends: 54253 [2021-11-23 13:43:56,632 INFO L226 Difference]: Without dead ends: 36011 [2021-11-23 13:43:56,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:43:56,648 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 4310 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4310 SdHoareTripleChecker+Valid, 5124 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:56,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4310 Valid, 5124 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36011 states. [2021-11-23 13:44:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36011 to 36009. [2021-11-23 13:44:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36009 states, 36007 states have (on average 1.2293442941650234) internal successors, (44265), 36008 states have internal predecessors, (44265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36009 states to 36009 states and 44265 transitions. [2021-11-23 13:44:00,289 INFO L78 Accepts]: Start accepts. Automaton has 36009 states and 44265 transitions. Word has length 126 [2021-11-23 13:44:00,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:00,289 INFO L470 AbstractCegarLoop]: Abstraction has 36009 states and 44265 transitions. [2021-11-23 13:44:00,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 36009 states and 44265 transitions. [2021-11-23 13:44:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-23 13:44:00,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:00,305 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:00,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 13:44:00,305 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:00,306 INFO L85 PathProgramCache]: Analyzing trace with hash -133290990, now seen corresponding path program 1 times [2021-11-23 13:44:00,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:00,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976516552] [2021-11-23 13:44:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:00,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:44:00,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:00,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976516552] [2021-11-23 13:44:00,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976516552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:00,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:00,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:00,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864365672] [2021-11-23 13:44:00,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:00,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:00,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:00,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:00,337 INFO L87 Difference]: Start difference. First operand 36009 states and 44265 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:04,247 INFO L93 Difference]: Finished difference Result 69691 states and 84346 transitions. [2021-11-23 13:44:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-23 13:44:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:04,298 INFO L225 Difference]: With dead ends: 69691 [2021-11-23 13:44:04,298 INFO L226 Difference]: Without dead ends: 35910 [2021-11-23 13:44:04,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:04,322 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 516 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 8438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:04,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 8438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35910 states. [2021-11-23 13:44:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35910 to 35910. [2021-11-23 13:44:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35910 states, 35908 states have (on average 1.2296981174111619) internal successors, (44156), 35909 states have internal predecessors, (44156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35910 states to 35910 states and 44156 transitions. [2021-11-23 13:44:07,988 INFO L78 Accepts]: Start accepts. Automaton has 35910 states and 44156 transitions. Word has length 126 [2021-11-23 13:44:07,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:07,988 INFO L470 AbstractCegarLoop]: Abstraction has 35910 states and 44156 transitions. [2021-11-23 13:44:07,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 35910 states and 44156 transitions. [2021-11-23 13:44:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-23 13:44:07,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:07,997 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:07,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 13:44:07,997 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash -946056004, now seen corresponding path program 1 times [2021-11-23 13:44:07,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:07,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871925298] [2021-11-23 13:44:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:07,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:08,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:08,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871925298] [2021-11-23 13:44:08,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871925298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:08,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:08,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:08,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557516287] [2021-11-23 13:44:08,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:08,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:08,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:08,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:08,048 INFO L87 Difference]: Start difference. First operand 35910 states and 44156 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:15,044 INFO L93 Difference]: Finished difference Result 100396 states and 120808 transitions. [2021-11-23 13:44:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:15,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-23 13:44:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:15,142 INFO L225 Difference]: With dead ends: 100396 [2021-11-23 13:44:15,142 INFO L226 Difference]: Without dead ends: 66714 [2021-11-23 13:44:15,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:15,297 INFO L933 BasicCegarLoop]: 4577 mSDtfsCounter, 4314 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4314 SdHoareTripleChecker+Valid, 5077 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:15,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4314 Valid, 5077 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:15,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66714 states.