./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY --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 64bit --witnessprinter.graph.data.programhash 104510927d9409ade9caf80490257750edc55f0d04f472d0e2cf5426e55ff4e4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:41:36,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:41:36,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:41:36,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:41:36,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:41:36,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:41:36,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:41:36,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:41:36,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:41:36,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:41:36,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:41:36,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:41:36,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:41:36,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:41:36,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:41:36,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:41:36,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:41:36,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:41:36,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:41:36,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:41:36,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:41:36,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:41:36,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:41:36,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:41:36,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:41:36,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:41:36,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:41:36,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:41:36,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:41:36,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:41:36,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:41:36,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:41:36,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:41:36,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:41:36,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:41:36,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:41:36,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:41:36,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:41:36,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:41:36,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:41:36,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:41:36,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:41:37,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:41:37,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:41:37,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:41:37,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:41:37,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:41:37,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:41:37,063 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:41:37,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:41:37,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:41:37,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:41:37,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:41:37,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:41:37,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:41:37,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:41:37,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:41:37,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:41:37,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:41:37,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:41:37,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:41:37,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:41:37,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:41:37,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:41:37,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:41:37,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:41:37,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:41:37,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:41:37,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:41:37,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:41:37,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:41:37,072 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_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 104510927d9409ade9caf80490257750edc55f0d04f472d0e2cf5426e55ff4e4 [2021-11-07 08:41:37,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:41:37,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:41:37,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:41:37,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:41:37,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:41:37,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2021-11-07 08:41:37,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/data/ec19857c2/5447134e4cd54410bf8c44836d5f0954/FLAG380b17552 [2021-11-07 08:41:38,654 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:41:38,656 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2021-11-07 08:41:38,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/data/ec19857c2/5447134e4cd54410bf8c44836d5f0954/FLAG380b17552 [2021-11-07 08:41:38,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/data/ec19857c2/5447134e4cd54410bf8c44836d5f0954 [2021-11-07 08:41:38,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:41:38,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:41:38,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:41:38,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:41:38,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:41:38,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:41:38" (1/1) ... [2021-11-07 08:41:38,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:38, skipping insertion in model container [2021-11-07 08:41:38,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:41:38" (1/1) ... [2021-11-07 08:41:38,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:41:39,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:41:42,293 WARN L228 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_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307491,307504] [2021-11-07 08:41:42,297 WARN L228 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_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307636,307649] [2021-11-07 08:41:42,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:41:42,367 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:41:43,005 WARN L228 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_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307491,307504] [2021-11-07 08:41:43,006 WARN L228 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_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307636,307649] [2021-11-07 08:41:43,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:41:43,271 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:41:43,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43 WrapperNode [2021-11-07 08:41:43,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:41:43,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:41:43,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:41:43,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:41:43,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:43,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:43,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:41:43,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:41:43,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:41:43,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:41:44,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:44,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:44,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:44,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:44,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:44,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:44,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:45,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:41:45,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:41:45,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:41:45,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:41:45,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (1/1) ... [2021-11-07 08:41:45,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:41:45,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:41:45,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:41:45,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8df1012-1dcb-4c3c-bdb5-c9b30d6f7e52/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:41:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 08:41:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:41:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 08:41:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 08:41:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:41:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:41:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:41:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 08:41:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:41:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:41:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 08:41:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 08:41:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:41:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:41:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:41:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:41:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-07 08:41:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:42:37,111 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 08:42:37,112 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 08:42:37,113 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 08:42:37,113 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 08:42:37,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:42:37,160 INFO L299 CfgBuilder]: Removed 2703 assume(true) statements. [2021-11-07 08:42:37,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:37 BoogieIcfgContainer [2021-11-07 08:42:37,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:42:37,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:42:37,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:42:37,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:42:37,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:41:38" (1/3) ... [2021-11-07 08:42:37,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2f587a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:37, skipping insertion in model container [2021-11-07 08:42:37,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:43" (2/3) ... [2021-11-07 08:42:37,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2f587a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:37, skipping insertion in model container [2021-11-07 08:42:37,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:37" (3/3) ... [2021-11-07 08:42:37,179 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2021-11-07 08:42:37,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:42:37,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2021-11-07 08:42:37,265 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:42:37,273 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 [2021-11-07 08:42:37,273 INFO L340 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2021-11-07 08:42:37,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 3189 states, 3130 states have (on average 1.4987220447284344) internal successors, (4691), 3188 states have internal predecessors, (4691), 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) [2021-11-07 08:42:37,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 08:42:37,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:37,389 INFO L513 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] [2021-11-07 08:42:37,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:42:37,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:37,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1107920357, now seen corresponding path program 1 times [2021-11-07 08:42:37,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:37,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023146853] [2021-11-07 08:42:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:37,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:42:38,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:38,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023146853] [2021-11-07 08:42:38,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023146853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:38,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:38,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:38,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870375341] [2021-11-07 08:42:38,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:38,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:38,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:38,778 INFO L87 Difference]: Start difference. First operand has 3189 states, 3130 states have (on average 1.4987220447284344) internal successors, (4691), 3188 states have internal predecessors, (4691), 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 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-07 08:42:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:41,613 INFO L93 Difference]: Finished difference Result 6757 states and 9925 transitions. [2021-11-07 08:42:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:41,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-07 08:42:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:41,670 INFO L225 Difference]: With dead ends: 6757 [2021-11-07 08:42:41,670 INFO L226 Difference]: Without dead ends: 3370 [2021-11-07 08:42:41,686 INFO L786 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 [2021-11-07 08:42:41,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-11-07 08:42:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3354. [2021-11-07 08:42:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3295 states have (on average 1.4370257966616085) internal successors, (4735), 3353 states have internal predecessors, (4735), 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) [2021-11-07 08:42:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4735 transitions. [2021-11-07 08:42:41,958 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4735 transitions. Word has length 60 [2021-11-07 08:42:41,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:41,959 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4735 transitions. [2021-11-07 08:42:41,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-07 08:42:41,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4735 transitions. [2021-11-07 08:42:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 08:42:41,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:41,965 INFO L513 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] [2021-11-07 08:42:41,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:42:41,965 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:42:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:41,967 INFO L85 PathProgramCache]: Analyzing trace with hash -580581691, now seen corresponding path program 1 times [2021-11-07 08:42:41,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:41,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121142886] [2021-11-07 08:42:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:41,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:42:42,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:42,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121142886] [2021-11-07 08:42:42,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121142886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:42,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:42,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:42,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959063484] [2021-11-07 08:42:42,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:42,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:42,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:42,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:42,581 INFO L87 Difference]: Start difference. First operand 3354 states and 4735 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-07 08:42:45,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:45,320 INFO L93 Difference]: Finished difference Result 9290 states and 13162 transitions. [2021-11-07 08:42:45,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:45,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2021-11-07 08:42:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:45,368 INFO L225 Difference]: With dead ends: 9290 [2021-11-07 08:42:45,370 INFO L226 Difference]: Without dead ends: 6004 [2021-11-07 08:42:45,381 INFO L786 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 [2021-11-07 08:42:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2021-11-07 08:42:45,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 5844. [2021-11-07 08:42:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5844 states, 5785 states have (on average 1.4487467588591183) internal successors, (8381), 5843 states have internal predecessors, (8381), 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) [2021-11-07 08:42:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 8381 transitions. [2021-11-07 08:42:45,618 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 8381 transitions. Word has length 70 [2021-11-07 08:42:45,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:45,621 INFO L470 AbstractCegarLoop]: Abstraction has 5844 states and 8381 transitions. [2021-11-07 08:42:45,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-07 08:42:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 8381 transitions. [2021-11-07 08:42:45,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 08:42:45,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:45,628 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:45,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:42:45,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:42:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:45,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1725639997, now seen corresponding path program 1 times [2021-11-07 08:42:45,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:45,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115600523] [2021-11-07 08:42:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:45,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:42:46,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:46,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115600523] [2021-11-07 08:42:46,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115600523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:46,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:46,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:46,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284543388] [2021-11-07 08:42:46,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:46,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:46,151 INFO L87 Difference]: Start difference. First operand 5844 states and 8381 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 08:42:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:48,834 INFO L93 Difference]: Finished difference Result 17376 states and 24971 transitions. [2021-11-07 08:42:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:48,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-11-07 08:42:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:48,921 INFO L225 Difference]: With dead ends: 17376 [2021-11-07 08:42:48,922 INFO L226 Difference]: Without dead ends: 11600 [2021-11-07 08:42:48,937 INFO L786 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 [2021-11-07 08:42:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11600 states. [2021-11-07 08:42:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11600 to 11466. [2021-11-07 08:42:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11466 states, 11407 states have (on average 1.4537564653283073) internal successors, (16583), 11465 states have internal predecessors, (16583), 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) [2021-11-07 08:42:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11466 states to 11466 states and 16583 transitions. [2021-11-07 08:42:49,597 INFO L78 Accepts]: Start accepts. Automaton has 11466 states and 16583 transitions. Word has length 75 [2021-11-07 08:42:49,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:49,599 INFO L470 AbstractCegarLoop]: Abstraction has 11466 states and 16583 transitions. [2021-11-07 08:42:49,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 08:42:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 11466 states and 16583 transitions. [2021-11-07 08:42:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 08:42:49,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:49,605 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 08:42:49,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:42:49,607 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:42:49,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1416380071, now seen corresponding path program 1 times [2021-11-07 08:42:49,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:49,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338199307] [2021-11-07 08:42:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:49,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 08:42:50,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:50,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338199307] [2021-11-07 08:42:50,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338199307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:50,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:50,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:50,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987931370] [2021-11-07 08:42:50,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:50,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:50,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:50,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:50,182 INFO L87 Difference]: Start difference. First operand 11466 states and 16583 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-07 08:42:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:53,022 INFO L93 Difference]: Finished difference Result 23858 states and 34469 transitions. [2021-11-07 08:42:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:53,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 108 [2021-11-07 08:42:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:53,110 INFO L225 Difference]: With dead ends: 23858 [2021-11-07 08:42:53,110 INFO L226 Difference]: Without dead ends: 12460 [2021-11-07 08:42:53,133 INFO L786 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 [2021-11-07 08:42:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12460 states. [2021-11-07 08:42:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12460 to 12438. [2021-11-07 08:42:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12438 states, 12379 states have (on average 1.4464011632603604) internal successors, (17905), 12437 states have internal predecessors, (17905), 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) [2021-11-07 08:42:53,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17905 transitions. [2021-11-07 08:42:53,687 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17905 transitions. Word has length 108 [2021-11-07 08:42:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:53,689 INFO L470 AbstractCegarLoop]: Abstraction has 12438 states and 17905 transitions. [2021-11-07 08:42:53,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-07 08:42:53,690 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17905 transitions. [2021-11-07 08:42:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 08:42:53,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:53,700 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:53,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:42:53,701 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:42:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2048557782, now seen corresponding path program 1 times [2021-11-07 08:42:53,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:53,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431255434] [2021-11-07 08:42:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:53,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:42:54,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:54,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431255434] [2021-11-07 08:42:54,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431255434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:54,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:54,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:42:54,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987139482] [2021-11-07 08:42:54,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:54,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:54,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:54,433 INFO L87 Difference]: Start difference. First operand 12438 states and 17905 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2021-11-07 08:42:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:55,355 INFO L93 Difference]: Finished difference Result 24808 states and 35734 transitions. [2021-11-07 08:42:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:55,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 157 [2021-11-07 08:42:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:55,399 INFO L225 Difference]: With dead ends: 24808 [2021-11-07 08:42:55,399 INFO L226 Difference]: Without dead ends: 12438 [2021-11-07 08:42:55,419 INFO L786 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 [2021-11-07 08:42:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2021-11-07 08:42:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12438. [2021-11-07 08:42:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12438 states, 12379 states have (on average 1.426528798772114) internal successors, (17659), 12437 states have internal predecessors, (17659), 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) [2021-11-07 08:42:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17659 transitions. [2021-11-07 08:42:55,898 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17659 transitions. Word has length 157 [2021-11-07 08:42:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:55,900 INFO L470 AbstractCegarLoop]: Abstraction has 12438 states and 17659 transitions. [2021-11-07 08:42:55,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2021-11-07 08:42:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17659 transitions. [2021-11-07 08:42:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-07 08:42:55,906 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:55,911 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:55,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:42:55,911 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:42:55,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash -918977778, now seen corresponding path program 1 times [2021-11-07 08:42:55,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:55,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442513755] [2021-11-07 08:42:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:55,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:42:56,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:56,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442513755] [2021-11-07 08:42:56,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442513755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:56,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:56,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:56,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471651787] [2021-11-07 08:42:56,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:42:56,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:42:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:42:56,671 INFO L87 Difference]: Start difference. First operand 12438 states and 17659 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-07 08:42:58,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:58,053 INFO L93 Difference]: Finished difference Result 24808 states and 35242 transitions. [2021-11-07 08:42:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:58,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 158 [2021-11-07 08:42:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:58,094 INFO L225 Difference]: With dead ends: 24808 [2021-11-07 08:42:58,094 INFO L226 Difference]: Without dead ends: 12438 [2021-11-07 08:42:58,118 INFO L786 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 [2021-11-07 08:42:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2021-11-07 08:42:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12438. [2021-11-07 08:42:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12438 states, 12379 states have (on average 1.4066564342838679) internal successors, (17413), 12437 states have internal predecessors, (17413), 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) [2021-11-07 08:42:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17413 transitions. [2021-11-07 08:42:58,608 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17413 transitions. Word has length 158 [2021-11-07 08:42:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:58,609 INFO L470 AbstractCegarLoop]: Abstraction has 12438 states and 17413 transitions. [2021-11-07 08:42:58,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-07 08:42:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17413 transitions. [2021-11-07 08:42:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-07 08:42:58,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:58,614 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:58,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:42:58,619 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:42:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:58,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1576849329, now seen corresponding path program 1 times [2021-11-07 08:42:58,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:58,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555934948] [2021-11-07 08:42:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:58,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:42:59,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:59,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555934948] [2021-11-07 08:42:59,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555934948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:59,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:59,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:59,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771918664] [2021-11-07 08:42:59,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:42:59,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:42:59,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:42:59,352 INFO L87 Difference]: Start difference. First operand 12438 states and 17413 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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) [2021-11-07 08:43:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:00,669 INFO L93 Difference]: Finished difference Result 24808 states and 34750 transitions. [2021-11-07 08:43:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:00,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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 159 [2021-11-07 08:43:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:00,709 INFO L225 Difference]: With dead ends: 24808 [2021-11-07 08:43:00,709 INFO L226 Difference]: Without dead ends: 12438 [2021-11-07 08:43:00,736 INFO L786 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 [2021-11-07 08:43:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2021-11-07 08:43:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12438. [2021-11-07 08:43:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12438 states, 12379 states have (on average 1.3867840697956215) internal successors, (17167), 12437 states have internal predecessors, (17167), 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) [2021-11-07 08:43:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12438 states to 12438 states and 17167 transitions. [2021-11-07 08:43:01,575 INFO L78 Accepts]: Start accepts. Automaton has 12438 states and 17167 transitions. Word has length 159 [2021-11-07 08:43:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:01,576 INFO L470 AbstractCegarLoop]: Abstraction has 12438 states and 17167 transitions. [2021-11-07 08:43:01,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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) [2021-11-07 08:43:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 12438 states and 17167 transitions. [2021-11-07 08:43:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-07 08:43:01,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:01,582 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:01,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:43:01,583 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1638227273, now seen corresponding path program 1 times [2021-11-07 08:43:01,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:01,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596017309] [2021-11-07 08:43:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:01,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:02,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:02,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596017309] [2021-11-07 08:43:02,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596017309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:02,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:02,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:02,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913034421] [2021-11-07 08:43:02,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:02,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:02,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:02,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:02,249 INFO L87 Difference]: Start difference. First operand 12438 states and 17167 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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) [2021-11-07 08:43:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:04,967 INFO L93 Difference]: Finished difference Result 35936 states and 49507 transitions. [2021-11-07 08:43:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:43:04,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 160 [2021-11-07 08:43:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:05,045 INFO L225 Difference]: With dead ends: 35936 [2021-11-07 08:43:05,046 INFO L226 Difference]: Without dead ends: 23566 [2021-11-07 08:43:05,068 INFO L786 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 [2021-11-07 08:43:05,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23566 states. [2021-11-07 08:43:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23566 to 13134. [2021-11-07 08:43:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.3639005736137668) internal successors, (17833), 13133 states have internal predecessors, (17833), 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) [2021-11-07 08:43:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 17833 transitions. [2021-11-07 08:43:05,832 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 17833 transitions. Word has length 160 [2021-11-07 08:43:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:05,833 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 17833 transitions. [2021-11-07 08:43:05,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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) [2021-11-07 08:43:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 17833 transitions. [2021-11-07 08:43:05,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 08:43:05,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:05,838 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:05,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:43:05,839 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash -753874804, now seen corresponding path program 1 times [2021-11-07 08:43:05,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:05,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667080279] [2021-11-07 08:43:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:05,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:06,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:06,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667080279] [2021-11-07 08:43:06,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667080279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:06,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:06,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:06,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583045238] [2021-11-07 08:43:06,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:06,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:06,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:06,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:06,576 INFO L87 Difference]: Start difference. First operand 13134 states and 17833 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-07 08:43:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:08,076 INFO L93 Difference]: Finished difference Result 26200 states and 35590 transitions. [2021-11-07 08:43:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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 161 [2021-11-07 08:43:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:08,123 INFO L225 Difference]: With dead ends: 26200 [2021-11-07 08:43:08,123 INFO L226 Difference]: Without dead ends: 13134 [2021-11-07 08:43:08,145 INFO L786 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 [2021-11-07 08:43:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-07 08:43:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-07 08:43:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.3450860420650095) internal successors, (17587), 13133 states have internal predecessors, (17587), 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) [2021-11-07 08:43:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 17587 transitions. [2021-11-07 08:43:08,793 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 17587 transitions. Word has length 161 [2021-11-07 08:43:08,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:08,793 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 17587 transitions. [2021-11-07 08:43:08,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-07 08:43:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 17587 transitions. [2021-11-07 08:43:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-07 08:43:08,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:08,799 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:08,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:43:08,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:08,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1894446204, now seen corresponding path program 1 times [2021-11-07 08:43:08,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:08,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388700287] [2021-11-07 08:43:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:08,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:09,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:09,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388700287] [2021-11-07 08:43:09,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388700287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:09,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:09,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:09,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540389199] [2021-11-07 08:43:09,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:09,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:09,486 INFO L87 Difference]: Start difference. First operand 13134 states and 17587 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-07 08:43:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:10,758 INFO L93 Difference]: Finished difference Result 26200 states and 35098 transitions. [2021-11-07 08:43:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:10,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 162 [2021-11-07 08:43:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:10,819 INFO L225 Difference]: With dead ends: 26200 [2021-11-07 08:43:10,819 INFO L226 Difference]: Without dead ends: 13134 [2021-11-07 08:43:10,839 INFO L786 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 [2021-11-07 08:43:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-07 08:43:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-07 08:43:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.3262715105162524) internal successors, (17341), 13133 states have internal predecessors, (17341), 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) [2021-11-07 08:43:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 17341 transitions. [2021-11-07 08:43:11,532 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 17341 transitions. Word has length 162 [2021-11-07 08:43:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:11,533 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 17341 transitions. [2021-11-07 08:43:11,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-07 08:43:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 17341 transitions. [2021-11-07 08:43:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 08:43:11,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:11,539 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:11,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:43:11,539 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:11,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1402695015, now seen corresponding path program 1 times [2021-11-07 08:43:11,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:11,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88309841] [2021-11-07 08:43:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:11,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:12,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:12,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88309841] [2021-11-07 08:43:12,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88309841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:12,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:12,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:12,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936210929] [2021-11-07 08:43:12,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:12,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:12,254 INFO L87 Difference]: Start difference. First operand 13134 states and 17341 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-11-07 08:43:13,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:13,702 INFO L93 Difference]: Finished difference Result 26200 states and 34606 transitions. [2021-11-07 08:43:13,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:13,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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 163 [2021-11-07 08:43:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:13,726 INFO L225 Difference]: With dead ends: 26200 [2021-11-07 08:43:13,727 INFO L226 Difference]: Without dead ends: 13134 [2021-11-07 08:43:13,748 INFO L786 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 [2021-11-07 08:43:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-07 08:43:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-07 08:43:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.3074569789674952) internal successors, (17095), 13133 states have internal predecessors, (17095), 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) [2021-11-07 08:43:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 17095 transitions. [2021-11-07 08:43:14,541 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 17095 transitions. Word has length 163 [2021-11-07 08:43:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:14,541 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 17095 transitions. [2021-11-07 08:43:14,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-11-07 08:43:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 17095 transitions. [2021-11-07 08:43:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-07 08:43:14,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:14,546 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:14,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:43:14,547 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash 535006655, now seen corresponding path program 1 times [2021-11-07 08:43:14,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:14,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536741597] [2021-11-07 08:43:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:14,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:15,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:15,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536741597] [2021-11-07 08:43:15,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536741597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:15,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:15,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:15,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021671743] [2021-11-07 08:43:15,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:15,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:15,182 INFO L87 Difference]: Start difference. First operand 13134 states and 17095 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-11-07 08:43:16,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:16,666 INFO L93 Difference]: Finished difference Result 26200 states and 34114 transitions. [2021-11-07 08:43:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:16,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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 164 [2021-11-07 08:43:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:16,687 INFO L225 Difference]: With dead ends: 26200 [2021-11-07 08:43:16,687 INFO L226 Difference]: Without dead ends: 13134 [2021-11-07 08:43:16,708 INFO L786 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 [2021-11-07 08:43:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-07 08:43:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-07 08:43:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2886424474187381) internal successors, (16849), 13133 states have internal predecessors, (16849), 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) [2021-11-07 08:43:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 16849 transitions. [2021-11-07 08:43:17,478 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 16849 transitions. Word has length 164 [2021-11-07 08:43:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:17,478 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 16849 transitions. [2021-11-07 08:43:17,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-11-07 08:43:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 16849 transitions. [2021-11-07 08:43:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 08:43:17,484 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:17,484 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:17,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 08:43:17,485 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:17,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash -593379774, now seen corresponding path program 1 times [2021-11-07 08:43:17,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:17,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509248055] [2021-11-07 08:43:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:17,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:18,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:18,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509248055] [2021-11-07 08:43:18,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509248055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:18,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:18,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:18,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5681496] [2021-11-07 08:43:18,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:18,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:18,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:18,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:18,094 INFO L87 Difference]: Start difference. First operand 13134 states and 16849 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-11-07 08:43:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:19,480 INFO L93 Difference]: Finished difference Result 26200 states and 33622 transitions. [2021-11-07 08:43:19,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:19,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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 165 [2021-11-07 08:43:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:19,509 INFO L225 Difference]: With dead ends: 26200 [2021-11-07 08:43:19,509 INFO L226 Difference]: Without dead ends: 13134 [2021-11-07 08:43:19,523 INFO L786 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 [2021-11-07 08:43:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-07 08:43:20,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-07 08:43:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2698279158699808) internal successors, (16603), 13133 states have internal predecessors, (16603), 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) [2021-11-07 08:43:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 16603 transitions. [2021-11-07 08:43:20,329 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 16603 transitions. Word has length 165 [2021-11-07 08:43:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:20,330 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 16603 transitions. [2021-11-07 08:43:20,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-11-07 08:43:20,331 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 16603 transitions. [2021-11-07 08:43:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-07 08:43:20,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:20,335 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:20,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 08:43:20,335 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:20,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1213471750, now seen corresponding path program 1 times [2021-11-07 08:43:20,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:20,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261813131] [2021-11-07 08:43:20,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:20,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:20,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:20,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261813131] [2021-11-07 08:43:20,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261813131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:20,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:20,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:20,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724938256] [2021-11-07 08:43:20,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:20,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:20,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:20,874 INFO L87 Difference]: Start difference. First operand 13134 states and 16603 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-07 08:43:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:22,373 INFO L93 Difference]: Finished difference Result 26200 states and 33130 transitions. [2021-11-07 08:43:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:22,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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 166 [2021-11-07 08:43:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:22,391 INFO L225 Difference]: With dead ends: 26200 [2021-11-07 08:43:22,391 INFO L226 Difference]: Without dead ends: 13134 [2021-11-07 08:43:22,401 INFO L786 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 [2021-11-07 08:43:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-07 08:43:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-07 08:43:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2510133843212237) internal successors, (16357), 13133 states have internal predecessors, (16357), 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) [2021-11-07 08:43:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 16357 transitions. [2021-11-07 08:43:23,081 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 16357 transitions. Word has length 166 [2021-11-07 08:43:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:23,081 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 16357 transitions. [2021-11-07 08:43:23,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-07 08:43:23,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 16357 transitions. [2021-11-07 08:43:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 08:43:23,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:23,086 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:23,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 08:43:23,086 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1038662429, now seen corresponding path program 1 times [2021-11-07 08:43:23,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:23,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400431124] [2021-11-07 08:43:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:23,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:23,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:23,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400431124] [2021-11-07 08:43:23,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400431124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:23,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:23,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:23,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619403275] [2021-11-07 08:43:23,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:23,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:23,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:23,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:23,719 INFO L87 Difference]: Start difference. First operand 13134 states and 16357 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-07 08:43:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:25,311 INFO L93 Difference]: Finished difference Result 26200 states and 32638 transitions. [2021-11-07 08:43:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:25,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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 167 [2021-11-07 08:43:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:25,333 INFO L225 Difference]: With dead ends: 26200 [2021-11-07 08:43:25,333 INFO L226 Difference]: Without dead ends: 13134 [2021-11-07 08:43:25,350 INFO L786 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 [2021-11-07 08:43:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-07 08:43:26,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-07 08:43:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2321988527724665) internal successors, (16111), 13133 states have internal predecessors, (16111), 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) [2021-11-07 08:43:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 16111 transitions. [2021-11-07 08:43:26,127 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 16111 transitions. Word has length 167 [2021-11-07 08:43:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:26,127 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 16111 transitions. [2021-11-07 08:43:26,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-07 08:43:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 16111 transitions. [2021-11-07 08:43:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 08:43:26,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:26,131 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:26,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 08:43:26,132 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2135494197, now seen corresponding path program 1 times [2021-11-07 08:43:26,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:26,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859914169] [2021-11-07 08:43:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:26,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:26,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:26,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859914169] [2021-11-07 08:43:26,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859914169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:26,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:26,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:26,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707197028] [2021-11-07 08:43:26,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:26,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:26,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:26,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:26,744 INFO L87 Difference]: Start difference. First operand 13134 states and 16111 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-07 08:43:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:28,196 INFO L93 Difference]: Finished difference Result 26200 states and 32146 transitions. [2021-11-07 08:43:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:28,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 168 [2021-11-07 08:43:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:28,216 INFO L225 Difference]: With dead ends: 26200 [2021-11-07 08:43:28,216 INFO L226 Difference]: Without dead ends: 13134 [2021-11-07 08:43:28,229 INFO L786 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 [2021-11-07 08:43:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-11-07 08:43:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 13134. [2021-11-07 08:43:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13134 states, 13075 states have (on average 1.2133843212237094) internal successors, (15865), 13133 states have internal predecessors, (15865), 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) [2021-11-07 08:43:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13134 states to 13134 states and 15865 transitions. [2021-11-07 08:43:29,311 INFO L78 Accepts]: Start accepts. Automaton has 13134 states and 15865 transitions. Word has length 168 [2021-11-07 08:43:29,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:29,312 INFO L470 AbstractCegarLoop]: Abstraction has 13134 states and 15865 transitions. [2021-11-07 08:43:29,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-07 08:43:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states and 15865 transitions. [2021-11-07 08:43:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 08:43:29,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:29,318 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:29,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 08:43:29,319 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:29,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2135553779, now seen corresponding path program 1 times [2021-11-07 08:43:29,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:29,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119366199] [2021-11-07 08:43:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:29,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:29,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:29,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119366199] [2021-11-07 08:43:29,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119366199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:29,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:29,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:43:29,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029721383] [2021-11-07 08:43:29,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:29,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:29,948 INFO L87 Difference]: Start difference. First operand 13134 states and 15865 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2021-11-07 08:43:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:34,654 INFO L93 Difference]: Finished difference Result 34000 states and 41402 transitions. [2021-11-07 08:43:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:43:34,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 168 [2021-11-07 08:43:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:34,702 INFO L225 Difference]: With dead ends: 34000 [2021-11-07 08:43:34,702 INFO L226 Difference]: Without dead ends: 33882 [2021-11-07 08:43:34,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:43:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33882 states. [2021-11-07 08:43:35,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33882 to 13038. [2021-11-07 08:43:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13038 states, 13033 states have (on average 1.1956571779329395) internal successors, (15583), 13037 states have internal predecessors, (15583), 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) [2021-11-07 08:43:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13038 states to 13038 states and 15583 transitions. [2021-11-07 08:43:35,965 INFO L78 Accepts]: Start accepts. Automaton has 13038 states and 15583 transitions. Word has length 168 [2021-11-07 08:43:35,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:35,965 INFO L470 AbstractCegarLoop]: Abstraction has 13038 states and 15583 transitions. [2021-11-07 08:43:35,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2021-11-07 08:43:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 13038 states and 15583 transitions. [2021-11-07 08:43:35,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-11-07 08:43:35,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:35,987 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:35,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 08:43:35,987 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash -869102373, now seen corresponding path program 1 times [2021-11-07 08:43:35,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:35,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178903369] [2021-11-07 08:43:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:35,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:37,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:37,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178903369] [2021-11-07 08:43:37,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178903369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:37,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:37,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:43:37,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50133787] [2021-11-07 08:43:37,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:43:37,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:37,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:43:37,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:43:37,074 INFO L87 Difference]: Start difference. First operand 13038 states and 15583 transitions. Second operand has 8 states, 8 states have (on average 45.125) internal successors, (361), 8 states have internal predecessors, (361), 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) [2021-11-07 08:43:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:48,798 INFO L93 Difference]: Finished difference Result 119362 states and 143351 transitions. [2021-11-07 08:43:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 08:43:48,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.125) internal successors, (361), 8 states have internal predecessors, (361), 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 369 [2021-11-07 08:43:48,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:49,159 INFO L225 Difference]: With dead ends: 119362 [2021-11-07 08:43:49,159 INFO L226 Difference]: Without dead ends: 106392 [2021-11-07 08:43:49,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:43:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106392 states. [2021-11-07 08:43:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106392 to 13082. [2021-11-07 08:43:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13082 states, 13077 states have (on average 1.1953047335015676) internal successors, (15631), 13081 states have internal predecessors, (15631), 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) [2021-11-07 08:43:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13082 states to 13082 states and 15631 transitions. [2021-11-07 08:43:51,902 INFO L78 Accepts]: Start accepts. Automaton has 13082 states and 15631 transitions. Word has length 369 [2021-11-07 08:43:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:51,904 INFO L470 AbstractCegarLoop]: Abstraction has 13082 states and 15631 transitions. [2021-11-07 08:43:51,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.125) internal successors, (361), 8 states have internal predecessors, (361), 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) [2021-11-07 08:43:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 13082 states and 15631 transitions. [2021-11-07 08:43:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-11-07 08:43:51,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:51,930 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:51,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 08:43:51,930 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:43:51,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:51,931 INFO L85 PathProgramCache]: Analyzing trace with hash -141439490, now seen corresponding path program 1 times [2021-11-07 08:43:51,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:51,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192002757] [2021-11-07 08:43:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:51,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:43:52,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:52,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192002757] [2021-11-07 08:43:52,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192002757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:52,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:52,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:52,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24526028] [2021-11-07 08:43:52,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:43:52,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:43:52,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:43:52,878 INFO L87 Difference]: Start difference. First operand 13082 states and 15631 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2021-11-07 08:43:57,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:57,541 INFO L93 Difference]: Finished difference Result 31363 states and 37435 transitions. [2021-11-07 08:43:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:57,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 389 [2021-11-07 08:43:57,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:57,568 INFO L225 Difference]: With dead ends: 31363 [2021-11-07 08:43:57,568 INFO L226 Difference]: Without dead ends: 18349 [2021-11-07 08:43:57,580 INFO L786 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 [2021-11-07 08:43:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2021-11-07 08:43:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18237. [2021-11-07 08:43:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18237 states, 18232 states have (on average 1.1919701623519088) internal successors, (21732), 18236 states have internal predecessors, (21732), 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) [2021-11-07 08:44:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18237 states to 18237 states and 21732 transitions. [2021-11-07 08:44:00,005 INFO L78 Accepts]: Start accepts. Automaton has 18237 states and 21732 transitions. Word has length 389 [2021-11-07 08:44:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:00,006 INFO L470 AbstractCegarLoop]: Abstraction has 18237 states and 21732 transitions. [2021-11-07 08:44:00,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2021-11-07 08:44:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 18237 states and 21732 transitions. [2021-11-07 08:44:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-11-07 08:44:00,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:00,029 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:00,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 08:44:00,029 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:44:00,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:00,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1613999160, now seen corresponding path program 1 times [2021-11-07 08:44:00,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:00,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220051154] [2021-11-07 08:44:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:00,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 08:44:01,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:01,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220051154] [2021-11-07 08:44:01,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220051154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:01,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:01,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:44:01,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608267230] [2021-11-07 08:44:01,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:44:01,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:44:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:01,014 INFO L87 Difference]: Start difference. First operand 18237 states and 21732 transitions. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2021-11-07 08:44:08,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:08,297 INFO L93 Difference]: Finished difference Result 57382 states and 68196 transitions. [2021-11-07 08:44:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:44:08,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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 403 [2021-11-07 08:44:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:08,365 INFO L225 Difference]: With dead ends: 57382 [2021-11-07 08:44:08,366 INFO L226 Difference]: Without dead ends: 39213 [2021-11-07 08:44:08,385 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:44:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39213 states. [2021-11-07 08:44:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39213 to 23386. [2021-11-07 08:44:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23386 states, 23381 states have (on average 1.190154398870878) internal successors, (27827), 23385 states have internal predecessors, (27827), 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) [2021-11-07 08:44:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23386 states to 23386 states and 27827 transitions. [2021-11-07 08:44:11,293 INFO L78 Accepts]: Start accepts. Automaton has 23386 states and 27827 transitions. Word has length 403 [2021-11-07 08:44:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:11,294 INFO L470 AbstractCegarLoop]: Abstraction has 23386 states and 27827 transitions. [2021-11-07 08:44:11,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2021-11-07 08:44:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 23386 states and 27827 transitions. [2021-11-07 08:44:11,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-07 08:44:11,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:11,313 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:11,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 08:44:11,314 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-07 08:44:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash 637091725, now seen corresponding path program 1 times [2021-11-07 08:44:11,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:11,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542970337] [2021-11-07 08:44:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:11,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 08:44:12,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:12,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542970337] [2021-11-07 08:44:12,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542970337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:12,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:12,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:44:12,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638549762] [2021-11-07 08:44:12,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:44:12,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:12,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:44:12,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:12,077 INFO L87 Difference]: Start difference. First operand 23386 states and 27827 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 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)