./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 06:08:35,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 06:08:35,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 06:08:35,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 06:08:35,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 06:08:35,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 06:08:35,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 06:08:35,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 06:08:35,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 06:08:35,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 06:08:35,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 06:08:35,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 06:08:35,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 06:08:35,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 06:08:35,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 06:08:35,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 06:08:35,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 06:08:35,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 06:08:35,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 06:08:35,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 06:08:35,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 06:08:35,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 06:08:35,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 06:08:35,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 06:08:36,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 06:08:36,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 06:08:36,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 06:08:36,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 06:08:36,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 06:08:36,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 06:08:36,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 06:08:36,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 06:08:36,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 06:08:36,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 06:08:36,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 06:08:36,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 06:08:36,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 06:08:36,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 06:08:36,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 06:08:36,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 06:08:36,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 06:08:36,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 06:08:36,032 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 06:08:36,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 06:08:36,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 06:08:36,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 06:08:36,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 06:08:36,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 06:08:36,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 06:08:36,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 06:08:36,034 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 06:08:36,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 06:08:36,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 06:08:36,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 06:08:36,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 06:08:36,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 06:08:36,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 06:08:36,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 06:08:36,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 06:08:36,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 06:08:36,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 06:08:36,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 06:08:36,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 06:08:36,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 06:08:36,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 06:08:36,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 06:08:36,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 06:08:36,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 06:08:36,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 06:08:36,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 06:08:36,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 06:08:36,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 06:08:36,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 06:08:36,037 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 [2021-11-17 06:08:36,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 06:08:36,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 06:08:36,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 06:08:36,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 06:08:36,272 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 06:08:36,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-11-17 06:08:36,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fbbc689/0592ecad126a4515b9b9152ed8008bdf/FLAG7e1c658d9 [2021-11-17 06:08:36,924 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 06:08:36,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-11-17 06:08:36,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fbbc689/0592ecad126a4515b9b9152ed8008bdf/FLAG7e1c658d9 [2021-11-17 06:08:37,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fbbc689/0592ecad126a4515b9b9152ed8008bdf [2021-11-17 06:08:37,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 06:08:37,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 06:08:37,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 06:08:37,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 06:08:37,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 06:08:37,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 06:08:37" (1/1) ... [2021-11-17 06:08:37,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680e39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:37, skipping insertion in model container [2021-11-17 06:08:37,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 06:08:37" (1/1) ... [2021-11-17 06:08:37,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 06:08:37,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 06:08:37,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-11-17 06:08:37,896 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 06:08:37,906 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 06:08:38,056 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-11-17 06:08:38,061 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 06:08:38,091 INFO L208 MainTranslator]: Completed translation [2021-11-17 06:08:38,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38 WrapperNode [2021-11-17 06:08:38,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 06:08:38,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 06:08:38,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 06:08:38,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 06:08:38,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,168 INFO L137 Inliner]: procedures = 142, calls = 664, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1980 [2021-11-17 06:08:38,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 06:08:38,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 06:08:38,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 06:08:38,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 06:08:38,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 06:08:38,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 06:08:38,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 06:08:38,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 06:08:38,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (1/1) ... [2021-11-17 06:08:38,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 06:08:38,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:08:38,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 06:08:38,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 06:08:38,358 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 06:08:38,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 06:08:38,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 06:08:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-11-17 06:08:38,359 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-11-17 06:08:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 06:08:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 06:08:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 06:08:38,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 06:08:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 06:08:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 06:08:38,359 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 06:08:38,360 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-17 06:08:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-17 06:08:38,360 INFO L130 BoogieDeclarations]: Found specification of procedure retry_transmit [2021-11-17 06:08:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure retry_transmit [2021-11-17 06:08:38,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 06:08:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 06:08:38,360 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-17 06:08:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-17 06:08:38,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-17 06:08:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-17 06:08:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 06:08:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 06:08:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_close [2021-11-17 06:08:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_close [2021-11-17 06:08:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure remove_msg [2021-11-17 06:08:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_msg [2021-11-17 06:08:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-11-17 06:08:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-11-17 06:08:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure task_pid [2021-11-17 06:08:38,362 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pid [2021-11-17 06:08:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 06:08:38,362 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 06:08:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unlock [2021-11-17 06:08:38,362 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unlock [2021-11-17 06:08:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 06:08:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-17 06:08:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-17 06:08:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 06:08:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 06:08:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-17 06:08:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-17 06:08:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 06:08:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 06:08:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure add_msg [2021-11-17 06:08:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure add_msg [2021-11-17 06:08:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 06:08:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-11-17 06:08:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-11-17 06:08:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-17 06:08:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-17 06:08:38,365 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 06:08:38,365 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 06:08:38,365 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_poll [2021-11-17 06:08:38,365 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_poll [2021-11-17 06:08:38,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 06:08:38,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-11-17 06:08:38,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-11-17 06:08:38,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 06:08:38,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 06:08:38,367 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 06:08:38,367 INFO L130 BoogieDeclarations]: Found specification of procedure findClient [2021-11-17 06:08:38,367 INFO L138 BoogieDeclarations]: Found implementation of procedure findClient [2021-11-17 06:08:38,367 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2021-11-17 06:08:38,367 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2021-11-17 06:08:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 06:08:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-17 06:08:38,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-17 06:08:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-17 06:08:38,368 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-17 06:08:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-17 06:08:38,369 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-17 06:08:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure remove_client_block [2021-11-17 06:08:38,369 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_client_block [2021-11-17 06:08:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 06:08:38,369 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 06:08:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 06:08:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 06:08:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure on_receive_block [2021-11-17 06:08:38,369 INFO L138 BoogieDeclarations]: Found implementation of procedure on_receive_block [2021-11-17 06:08:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure flush [2021-11-17 06:08:38,370 INFO L138 BoogieDeclarations]: Found implementation of procedure flush [2021-11-17 06:08:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_set_termios [2021-11-17 06:08:38,370 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_set_termios [2021-11-17 06:08:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 06:08:38,370 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 06:08:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_ioctl [2021-11-17 06:08:38,370 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_ioctl [2021-11-17 06:08:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure remove_from_tx_queue [2021-11-17 06:08:38,371 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_from_tx_queue [2021-11-17 06:08:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 06:08:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure tty_lock [2021-11-17 06:08:38,371 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_lock [2021-11-17 06:08:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2021-11-17 06:08:38,372 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2021-11-17 06:08:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 06:08:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 06:08:38,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 06:08:38,634 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 06:08:38,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 06:08:38,751 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 06:08:41,802 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 06:08:41,815 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 06:08:41,815 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 06:08:41,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 06:08:41 BoogieIcfgContainer [2021-11-17 06:08:41,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 06:08:41,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 06:08:41,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 06:08:41,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 06:08:41,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 06:08:37" (1/3) ... [2021-11-17 06:08:41,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285e09ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 06:08:41, skipping insertion in model container [2021-11-17 06:08:41,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:08:38" (2/3) ... [2021-11-17 06:08:41,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285e09ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 06:08:41, skipping insertion in model container [2021-11-17 06:08:41,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 06:08:41" (3/3) ... [2021-11-17 06:08:41,839 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-11-17 06:08:41,842 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 06:08:41,842 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 06:08:41,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 06:08:41,883 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 [2021-11-17 06:08:41,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 06:08:41,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 523 states have (on average 1.3919694072657744) internal successors, (728), 559 states have internal predecessors, (728), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) [2021-11-17 06:08:41,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-17 06:08:41,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:08:41,930 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:08:41,931 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:08:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:08:41,934 INFO L85 PathProgramCache]: Analyzing trace with hash -842815461, now seen corresponding path program 1 times [2021-11-17 06:08:41,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:08:41,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934728026] [2021-11-17 06:08:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:08:41,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:08:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 06:08:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 06:08:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-17 06:08:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 06:08:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 06:08:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 06:08:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 06:08:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 06:08:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 06:08:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 06:08:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 06:08:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 06:08:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 06:08:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 06:08:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 06:08:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-17 06:08:42,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:08:42,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934728026] [2021-11-17 06:08:42,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934728026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:08:42,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:08:42,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 06:08:42,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445865890] [2021-11-17 06:08:42,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:08:42,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 06:08:42,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:08:42,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 06:08:42,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-17 06:08:42,605 INFO L87 Difference]: Start difference. First operand has 750 states, 523 states have (on average 1.3919694072657744) internal successors, (728), 559 states have internal predecessors, (728), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:08:46,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:08:48,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:08:48,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:08:48,851 INFO L93 Difference]: Finished difference Result 2113 states and 3220 transitions. [2021-11-17 06:08:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 06:08:48,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 173 [2021-11-17 06:08:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:08:48,882 INFO L225 Difference]: With dead ends: 2113 [2021-11-17 06:08:48,882 INFO L226 Difference]: Without dead ends: 1341 [2021-11-17 06:08:48,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-17 06:08:48,894 INFO L933 BasicCegarLoop]: 1077 mSDtfsCounter, 1687 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 1357 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 3200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1357 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-17 06:08:48,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1775 Valid, 3040 Invalid, 3200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1357 Valid, 1842 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-17 06:08:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-11-17 06:08:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1020. [2021-11-17 06:08:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 710 states have (on average 1.3816901408450704) internal successors, (981), 757 states have internal predecessors, (981), 245 states have call successors, (245), 65 states have call predecessors, (245), 64 states have return successors, (244), 229 states have call predecessors, (244), 244 states have call successors, (244) [2021-11-17 06:08:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1470 transitions. [2021-11-17 06:08:49,000 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1470 transitions. Word has length 173 [2021-11-17 06:08:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:08:49,001 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1470 transitions. [2021-11-17 06:08:49,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:08:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1470 transitions. [2021-11-17 06:08:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-17 06:08:49,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:08:49,005 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:08:49,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 06:08:49,005 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:08:49,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:08:49,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1799726521, now seen corresponding path program 1 times [2021-11-17 06:08:49,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:08:49,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987529502] [2021-11-17 06:08:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:08:49,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:08:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 06:08:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 06:08:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-17 06:08:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 06:08:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 06:08:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 06:08:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 06:08:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 06:08:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 06:08:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 06:08:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 06:08:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 06:08:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 06:08:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 06:08:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 06:08:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-17 06:08:49,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:08:49,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987529502] [2021-11-17 06:08:49,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987529502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:08:49,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:08:49,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 06:08:49,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678159473] [2021-11-17 06:08:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:08:49,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 06:08:49,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:08:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 06:08:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-17 06:08:49,233 INFO L87 Difference]: Start difference. First operand 1020 states and 1470 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:08:56,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:08:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:08:57,554 INFO L93 Difference]: Finished difference Result 6130 states and 9736 transitions. [2021-11-17 06:08:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 06:08:57,555 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2021-11-17 06:08:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:08:57,601 INFO L225 Difference]: With dead ends: 6130 [2021-11-17 06:08:57,601 INFO L226 Difference]: Without dead ends: 5159 [2021-11-17 06:08:57,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-17 06:08:57,612 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 5915 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 4286 mSolverCounterSat, 3982 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6255 SdHoareTripleChecker+Valid, 5271 SdHoareTripleChecker+Invalid, 8269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3982 IncrementalHoareTripleChecker+Valid, 4286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-17 06:08:57,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6255 Valid, 5271 Invalid, 8269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3982 Valid, 4286 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-11-17 06:08:57,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2021-11-17 06:08:57,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 3961. [2021-11-17 06:08:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 2770 states have (on average 1.38014440433213) internal successors, (3823), 2951 states have internal predecessors, (3823), 929 states have call successors, (929), 246 states have call predecessors, (929), 261 states have return successors, (1209), 887 states have call predecessors, (1209), 928 states have call successors, (1209) [2021-11-17 06:08:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5961 transitions. [2021-11-17 06:08:57,794 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5961 transitions. Word has length 184 [2021-11-17 06:08:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:08:57,796 INFO L470 AbstractCegarLoop]: Abstraction has 3961 states and 5961 transitions. [2021-11-17 06:08:57,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:08:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5961 transitions. [2021-11-17 06:08:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-17 06:08:57,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:08:57,799 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:08:57,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 06:08:57,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:08:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:08:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2071293813, now seen corresponding path program 1 times [2021-11-17 06:08:57,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:08:57,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250412778] [2021-11-17 06:08:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:08:57,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:08:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 06:08:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 06:08:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-17 06:08:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 06:08:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 06:08:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 06:08:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 06:08:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 06:08:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 06:08:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:08:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:08:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 06:08:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 06:08:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 06:08:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 06:08:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 06:08:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:58,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 06:08:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:08:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-17 06:08:58,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:08:58,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250412778] [2021-11-17 06:08:58,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250412778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:08:58,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:08:58,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 06:08:58,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259309095] [2021-11-17 06:08:58,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:08:58,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 06:08:58,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:08:58,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 06:08:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-17 06:08:58,061 INFO L87 Difference]: Start difference. First operand 3961 states and 5961 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:09:05,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:09:08,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:09:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:09:09,534 INFO L93 Difference]: Finished difference Result 24261 states and 40750 transitions. [2021-11-17 06:09:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 06:09:09,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2021-11-17 06:09:09,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:09:09,677 INFO L225 Difference]: With dead ends: 24261 [2021-11-17 06:09:09,677 INFO L226 Difference]: Without dead ends: 20349 [2021-11-17 06:09:09,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-17 06:09:09,715 INFO L933 BasicCegarLoop]: 1467 mSDtfsCounter, 5423 mSDsluCounter, 4266 mSDsCounter, 0 mSdLazyCounter, 5546 mSolverCounterSat, 3417 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5766 SdHoareTripleChecker+Valid, 5733 SdHoareTripleChecker+Invalid, 8965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3417 IncrementalHoareTripleChecker+Valid, 5546 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-17 06:09:09,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5766 Valid, 5733 Invalid, 8965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3417 Valid, 5546 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2021-11-17 06:09:09,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20349 states. [2021-11-17 06:09:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20349 to 15898. [2021-11-17 06:09:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 11121 states have (on average 1.372988040643827) internal successors, (15269), 11823 states have internal predecessors, (15269), 3695 states have call successors, (3695), 972 states have call predecessors, (3695), 1081 states have return successors, (6352), 3592 states have call predecessors, (6352), 3694 states have call successors, (6352) [2021-11-17 06:09:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 25316 transitions. [2021-11-17 06:09:10,530 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 25316 transitions. Word has length 185 [2021-11-17 06:09:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:09:10,532 INFO L470 AbstractCegarLoop]: Abstraction has 15898 states and 25316 transitions. [2021-11-17 06:09:10,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:09:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 25316 transitions. [2021-11-17 06:09:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-17 06:09:10,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:09:10,537 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:09:10,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 06:09:10,538 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:09:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:09:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash -517979199, now seen corresponding path program 1 times [2021-11-17 06:09:10,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:09:10,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864079455] [2021-11-17 06:09:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:09:10,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:09:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 06:09:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 06:09:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-17 06:09:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 06:09:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 06:09:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 06:09:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 06:09:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 06:09:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 06:09:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 06:09:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 06:09:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 06:09:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 06:09:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 06:09:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 06:09:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-17 06:09:10,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:09:10,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864079455] [2021-11-17 06:09:10,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864079455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:09:10,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:09:10,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 06:09:10,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375084391] [2021-11-17 06:09:10,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:09:10,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 06:09:10,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:09:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 06:09:10,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-17 06:09:10,871 INFO L87 Difference]: Start difference. First operand 15898 states and 25316 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:09:19,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:09:23,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:09:24,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:09:24,889 INFO L93 Difference]: Finished difference Result 96882 states and 173609 transitions. [2021-11-17 06:09:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 06:09:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 186 [2021-11-17 06:09:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:09:25,763 INFO L225 Difference]: With dead ends: 96882 [2021-11-17 06:09:25,763 INFO L226 Difference]: Without dead ends: 81033 [2021-11-17 06:09:25,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-17 06:09:25,894 INFO L933 BasicCegarLoop]: 1480 mSDtfsCounter, 5423 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 3432 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5766 SdHoareTripleChecker+Valid, 5682 SdHoareTripleChecker+Invalid, 8623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3432 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-17 06:09:25,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5766 Valid, 5682 Invalid, 8623 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3432 Valid, 5189 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2021-11-17 06:09:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81033 states. [2021-11-17 06:09:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81033 to 64226. [2021-11-17 06:09:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64226 states, 44924 states have (on average 1.3657955658445375) internal successors, (61357), 47652 states have internal predecessors, (61357), 14832 states have call successors, (14832), 3876 states have call predecessors, (14832), 4469 states have return successors, (33531), 14653 states have call predecessors, (33531), 14831 states have call successors, (33531) [2021-11-17 06:09:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64226 states to 64226 states and 109720 transitions. [2021-11-17 06:09:29,248 INFO L78 Accepts]: Start accepts. Automaton has 64226 states and 109720 transitions. Word has length 186 [2021-11-17 06:09:29,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:09:29,249 INFO L470 AbstractCegarLoop]: Abstraction has 64226 states and 109720 transitions. [2021-11-17 06:09:29,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:09:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 64226 states and 109720 transitions. [2021-11-17 06:09:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-17 06:09:29,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:09:29,253 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:09:29,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 06:09:29,253 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:09:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:09:29,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1685994259, now seen corresponding path program 1 times [2021-11-17 06:09:29,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:09:29,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078705184] [2021-11-17 06:09:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:09:29,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:09:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 06:09:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 06:09:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-17 06:09:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 06:09:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 06:09:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 06:09:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 06:09:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 06:09:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 06:09:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:09:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:09:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 06:09:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 06:09:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 06:09:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 06:09:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 06:09:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 06:09:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:09:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-17 06:09:29,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:09:29,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078705184] [2021-11-17 06:09:29,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078705184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:09:29,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:09:29,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 06:09:29,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438114852] [2021-11-17 06:09:29,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:09:29,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 06:09:29,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:09:29,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 06:09:29,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-17 06:09:29,466 INFO L87 Difference]: Start difference. First operand 64226 states and 109720 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:09:41,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:09:48,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:09:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:09:49,701 INFO L93 Difference]: Finished difference Result 380400 states and 725028 transitions. [2021-11-17 06:09:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 06:09:49,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 187 [2021-11-17 06:09:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:09:52,590 INFO L225 Difference]: With dead ends: 380400 [2021-11-17 06:09:52,591 INFO L226 Difference]: Without dead ends: 316223 [2021-11-17 06:09:53,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-17 06:09:53,151 INFO L933 BasicCegarLoop]: 1476 mSDtfsCounter, 6279 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 5171 mSolverCounterSat, 4367 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6618 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 9540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4367 IncrementalHoareTripleChecker+Valid, 5171 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-17 06:09:53,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6618 Valid, 4888 Invalid, 9540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4367 Valid, 5171 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2021-11-17 06:09:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316223 states. [2021-11-17 06:10:05,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316223 to 253706. [2021-11-17 06:10:05,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253706 states, 178232 states have (on average 1.3572871313793258) internal successors, (241912), 188137 states have internal predecessors, (241912), 57400 states have call successors, (57400), 15166 states have call predecessors, (57400), 18073 states have return successors, (166006), 58029 states have call predecessors, (166006), 57399 states have call successors, (166006) [2021-11-17 06:10:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253706 states to 253706 states and 465318 transitions. [2021-11-17 06:10:08,174 INFO L78 Accepts]: Start accepts. Automaton has 253706 states and 465318 transitions. Word has length 187 [2021-11-17 06:10:08,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:10:08,175 INFO L470 AbstractCegarLoop]: Abstraction has 253706 states and 465318 transitions. [2021-11-17 06:10:08,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-17 06:10:08,175 INFO L276 IsEmpty]: Start isEmpty. Operand 253706 states and 465318 transitions. [2021-11-17 06:10:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-17 06:10:08,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:10:08,177 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 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] [2021-11-17 06:10:08,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 06:10:08,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:10:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:10:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash -364532315, now seen corresponding path program 1 times [2021-11-17 06:10:08,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:10:08,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773738205] [2021-11-17 06:10:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:10:08,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:10:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 06:10:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 06:10:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:10:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:10:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-17 06:10:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:10:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:10:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 06:10:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:10:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:10:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 06:10:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 06:10:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 06:10:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:10:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:10:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 06:10:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:10:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:10:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 06:10:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:10:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:10:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 06:10:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 06:10:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 06:10:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 06:10:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 06:10:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 06:10:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 06:10:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:10:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:10:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:10:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2021-11-17 06:10:08,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:10:08,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773738205] [2021-11-17 06:10:08,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773738205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:10:08,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:10:08,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 06:10:08,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535304854] [2021-11-17 06:10:08,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:10:08,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 06:10:08,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:10:08,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 06:10:08,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-17 06:10:08,408 INFO L87 Difference]: Start difference. First operand 253706 states and 465318 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 06:10:21,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []