./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.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 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 10:48:38,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:48:38,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:48:38,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:48:38,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:48:38,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:48:38,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:48:38,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:48:38,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:48:38,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:48:38,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:48:38,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:48:38,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:48:38,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:48:38,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:48:38,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:48:38,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:48:38,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:48:38,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:48:38,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:48:38,811 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:48:38,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:48:38,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:48:38,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:48:38,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:48:38,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:48:38,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:48:38,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:48:38,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:48:38,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:48:38,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:48:38,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:48:38,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:48:38,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:48:38,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:48:38,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:48:38,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:48:38,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:48:38,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:48:38,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:48:38,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:48:38,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:48:38,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 10:48:38,857 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:48:38,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:48:38,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:48:38,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:48:38,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:48:38,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:48:38,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:48:38,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:48:38,860 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:48:38,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:48:38,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 10:48:38,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:48:38,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:48:38,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:48:38,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:48:38,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:48:38,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:48:38,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:48:38,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:48:38,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:48:38,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:48:38,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:48:38,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:48:38,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:48:38,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:48:38,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 10:48:38,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 10:48:38,863 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:48:38,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:48:38,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:48:38,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 [2022-07-21 10:48:39,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:48:39,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:48:39,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:48:39,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:48:39,226 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:48:39,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-07-21 10:48:39,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01e69ee72/b8e55a5b11c541a08af3999723fca60f/FLAG4402192c9 [2022-07-21 10:48:39,932 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:48:39,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-07-21 10:48:39,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01e69ee72/b8e55a5b11c541a08af3999723fca60f/FLAG4402192c9 [2022-07-21 10:48:40,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01e69ee72/b8e55a5b11c541a08af3999723fca60f [2022-07-21 10:48:40,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:48:40,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:48:40,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:48:40,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:48:40,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:48:40,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:48:40" (1/1) ... [2022-07-21 10:48:40,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1714887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:40, skipping insertion in model container [2022-07-21 10:48:40,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:48:40" (1/1) ... [2022-07-21 10:48:40,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:48:40,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:48:42,830 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i[420085,420098] [2022-07-21 10:48:42,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:48:42,969 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:48:43,349 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i[420085,420098] [2022-07-21 10:48:43,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:48:43,501 INFO L208 MainTranslator]: Completed translation [2022-07-21 10:48:43,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43 WrapperNode [2022-07-21 10:48:43,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 10:48:43,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 10:48:43,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 10:48:43,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 10:48:43,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:43,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:43,856 INFO L137 Inliner]: procedures = 395, calls = 4060, calls flagged for inlining = 199, calls inlined = 146, statements flattened = 7353 [2022-07-21 10:48:43,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 10:48:43,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 10:48:43,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 10:48:43,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 10:48:43,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:43,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:43,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:43,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:44,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:44,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:44,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:44,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 10:48:44,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 10:48:44,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 10:48:44,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 10:48:44,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (1/1) ... [2022-07-21 10:48:44,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:48:44,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:48:44,185 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) [2022-07-21 10:48:44,204 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 [2022-07-21 10:48:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_wait_until_sent [2022-07-21 10:48:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_wait_until_sent [2022-07-21 10:48:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-21 10:48:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-21 10:48:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-21 10:48:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_start [2022-07-21 10:48:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_start [2022-07-21 10:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_txidle [2022-07-21 10:48:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_txidle [2022-07-21 10:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2022-07-21 10:48:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2022-07-21 10:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 10:48:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 10:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopback_frame [2022-07-21 10:48:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopback_frame [2022-07-21 10:48:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2022-07-21 10:48:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2022-07-21 10:48:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_receiver [2022-07-21 10:48:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_receiver [2022-07-21 10:48:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_serial_signals [2022-07-21 10:48:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_serial_signals [2022-07-21 10:48:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_trace_block [2022-07-21 10:48:44,222 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_trace_block [2022-07-21 10:48:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-07-21 10:48:44,222 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-07-21 10:48:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 10:48:44,222 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 10:48:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mgsl_ops_disconnect_2 [2022-07-21 10:48:44,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mgsl_ops_disconnect_2 [2022-07-21 10:48:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2022-07-21 10:48:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2022-07-21 10:48:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 10:48:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 10:48:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-21 10:48:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2022-07-21 10:48:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2022-07-21 10:48:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure load_next_tx_holding_buffer [2022-07-21 10:48:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure load_next_tx_holding_buffer [2022-07-21 10:48:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 10:48:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 10:48:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tty_port [2022-07-21 10:48:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tty_port [2022-07-21 10:48:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 10:48:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2022-07-21 10:48:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2022-07-21 10:48:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-21 10:48:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-21 10:48:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-21 10:48:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-21 10:48:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-21 10:48:44,226 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-21 10:48:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 10:48:44,226 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 10:48:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2022-07-21 10:48:44,227 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2022-07-21 10:48:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutDmaReg [2022-07-21 10:48:44,227 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutDmaReg [2022-07-21 10:48:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 10:48:44,228 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 10:48:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_cancel_transmit [2022-07-21 10:48:44,228 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_cancel_transmit [2022-07-21 10:48:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure usc_load_txfifo [2022-07-21 10:48:44,229 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_load_txfifo [2022-07-21 10:48:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-21 10:48:44,229 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-21 10:48:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2022-07-21 10:48:44,229 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2022-07-21 10:48:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 10:48:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-21 10:48:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-21 10:48:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-21 10:48:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-21 10:48:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 10:48:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 10:48:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 10:48:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 10:48:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure usc_reset [2022-07-21 10:48:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_reset [2022-07-21 10:48:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_free_frame_memory [2022-07-21 10:48:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_free_frame_memory [2022-07-21 10:48:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InReg [2022-07-21 10:48:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InReg [2022-07-21 10:48:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-07-21 10:48:44,232 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-07-21 10:48:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure usc_enable_loopback [2022-07-21 10:48:44,232 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_enable_loopback [2022-07-21 10:48:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_load_tx_dma_buffer [2022-07-21 10:48:44,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_load_tx_dma_buffer [2022-07-21 10:48:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure usc_DmaCmd [2022-07-21 10:48:44,233 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_DmaCmd [2022-07-21 10:48:44,233 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_buffer [2022-07-21 10:48:44,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_buffer [2022-07-21 10:48:44,233 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-21 10:48:44,233 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-21 10:48:44,233 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2022-07-21 10:48:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2022-07-21 10:48:44,234 INFO L130 BoogieDeclarations]: Found specification of procedure usc_RTCmd [2022-07-21 10:48:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_RTCmd [2022-07-21 10:48:44,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 10:48:44,235 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_sdlc_mode [2022-07-21 10:48:44,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_sdlc_mode [2022-07-21 10:48:44,235 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_receiver [2022-07-21 10:48:44,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_receiver [2022-07-21 10:48:44,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 10:48:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 10:48:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 10:48:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-21 10:48:44,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-21 10:48:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_add_device [2022-07-21 10:48:44,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_add_device [2022-07-21 10:48:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_unthrottle [2022-07-21 10:48:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_unthrottle [2022-07-21 10:48:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_throttle [2022-07-21 10:48:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_throttle [2022-07-21 10:48:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutReg [2022-07-21 10:48:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutReg [2022-07-21 10:48:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 10:48:44,238 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 10:48:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2022-07-21 10:48:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2022-07-21 10:48:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_set_termios [2022-07-21 10:48:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_set_termios [2022-07-21 10:48:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-21 10:48:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-21 10:48:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 10:48:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 10:48:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_transmitter [2022-07-21 10:48:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_transmitter [2022-07-21 10:48:44,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 10:48:44,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 10:48:44,247 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-07-21 10:48:44,247 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-07-21 10:48:44,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 10:48:44,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 10:48:44,247 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_chars [2022-07-21 10:48:44,247 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_chars [2022-07-21 10:48:44,247 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-21 10:48:44,247 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-21 10:48:44,247 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-21 10:48:44,248 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-21 10:48:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_send_xchar [2022-07-21 10:48:44,248 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_send_xchar [2022-07-21 10:48:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_change_params [2022-07-21 10:48:44,248 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_change_params [2022-07-21 10:48:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 10:48:44,248 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 10:48:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 10:48:44,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 10:48:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure usc_get_serial_signals [2022-07-21 10:48:44,249 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_get_serial_signals [2022-07-21 10:48:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_reset_rx_dma_buffers [2022-07-21 10:48:44,249 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_reset_rx_dma_buffers [2022-07-21 10:48:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 10:48:44,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 10:48:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-21 10:48:44,249 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-21 10:48:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_transmitter [2022-07-21 10:48:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_transmitter [2022-07-21 10:48:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-21 10:48:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-21 10:48:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2022-07-21 10:48:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2022-07-21 10:48:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 10:48:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 10:48:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_paranoia_check [2022-07-21 10:48:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_paranoia_check [2022-07-21 10:48:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InDmaReg [2022-07-21 10:48:44,251 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InDmaReg [2022-07-21 10:48:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 10:48:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 10:48:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_active [2022-07-21 10:48:44,251 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_active [2022-07-21 10:48:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_stop [2022-07-21 10:48:44,252 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_stop [2022-07-21 10:48:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-21 10:48:44,252 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-21 10:48:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 10:48:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_remove_one [2022-07-21 10:48:44,252 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_remove_one [2022-07-21 10:48:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-21 10:48:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-21 10:48:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_cleanup [2022-07-21 10:48:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_cleanup [2022-07-21 10:48:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-21 10:48:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-21 10:48:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-21 10:48:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-21 10:48:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-07-21 10:48:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-07-21 10:48:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-21 10:48:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-21 10:48:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-07-21 10:48:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-07-21 10:48:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_write_room [2022-07-21 10:48:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_write_room [2022-07-21 10:48:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_break [2022-07-21 10:48:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_break [2022-07-21 10:48:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_allocate_device [2022-07-21 10:48:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_allocate_device [2022-07-21 10:48:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-07-21 10:48:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-07-21 10:48:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_install [2022-07-21 10:48:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_install [2022-07-21 10:48:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2022-07-21 10:48:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2022-07-21 10:48:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_release_resources [2022-07-21 10:48:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_release_resources [2022-07-21 10:48:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-21 10:48:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-21 10:48:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-21 10:48:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-21 10:48:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-21 10:48:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-21 10:48:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_send_done [2022-07-21 10:48:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_send_done [2022-07-21 10:48:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 10:48:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 10:48:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-07-21 10:48:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-07-21 10:48:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 10:48:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 10:48:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_ioctl [2022-07-21 10:48:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_ioctl [2022-07-21 10:48:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-07-21 10:48:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-07-21 10:48:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 10:48:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 10:48:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 10:48:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure msgl_get_icount [2022-07-21 10:48:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure msgl_get_icount [2022-07-21 10:48:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_chars_in_buffer [2022-07-21 10:48:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_chars_in_buffer [2022-07-21 10:48:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-21 10:48:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-21 10:48:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2022-07-21 10:48:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2022-07-21 10:48:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-21 10:48:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-21 10:48:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_put_char [2022-07-21 10:48:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_put_char [2022-07-21 10:48:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_program_hw [2022-07-21 10:48:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_program_hw [2022-07-21 10:48:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2022-07-21 10:48:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2022-07-21 10:48:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_hangup [2022-07-21 10:48:44,261 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_hangup [2022-07-21 10:48:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-21 10:48:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-21 10:48:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-07-21 10:48:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-07-21 10:48:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-21 10:48:44,264 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-21 10:48:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 10:48:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_alloc_frame_memory [2022-07-21 10:48:44,264 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_alloc_frame_memory [2022-07-21 10:48:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-07-21 10:48:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-07-21 10:48:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-07-21 10:48:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-07-21 10:48:44,986 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 10:48:44,988 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 10:49:06,493 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 10:49:06,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 10:49:06,519 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 10:49:06,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:49:06 BoogieIcfgContainer [2022-07-21 10:49:06,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 10:49:06,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 10:49:06,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 10:49:06,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 10:49:06,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:48:40" (1/3) ... [2022-07-21 10:49:06,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c02e59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:49:06, skipping insertion in model container [2022-07-21 10:49:06,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:48:43" (2/3) ... [2022-07-21 10:49:06,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c02e59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:49:06, skipping insertion in model container [2022-07-21 10:49:06,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:49:06" (3/3) ... [2022-07-21 10:49:06,530 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-07-21 10:49:06,539 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 10:49:06,539 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 10:49:06,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 10:49:06,647 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1725ec4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55794831 [2022-07-21 10:49:06,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 10:49:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 3259 states, 2247 states have (on average 1.422340898976413) internal successors, (3196), 2324 states have internal predecessors, (3196), 890 states have call successors, (890), 120 states have call predecessors, (890), 120 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2022-07-21 10:49:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 10:49:06,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:06,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:49:06,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:06,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1697268518, now seen corresponding path program 1 times [2022-07-21 10:49:06,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:49:06,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570778998] [2022-07-21 10:49:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:49:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:49:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 10:49:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:49:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:49:07,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570778998] [2022-07-21 10:49:07,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570778998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:07,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:07,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:49:07,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424114727] [2022-07-21 10:49:07,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:07,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:49:07,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:49:07,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:49:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:49:07,297 INFO L87 Difference]: Start difference. First operand has 3259 states, 2247 states have (on average 1.422340898976413) internal successors, (3196), 2324 states have internal predecessors, (3196), 890 states have call successors, (890), 120 states have call predecessors, (890), 120 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:49:10,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:49:12,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:49:15,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:49:18,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:49:22,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:49:25,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:49:27,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:49:30,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:49:32,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:49:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:36,384 INFO L93 Difference]: Finished difference Result 10056 states and 15715 transitions. [2022-07-21 10:49:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:49:36,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-21 10:49:36,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:36,467 INFO L225 Difference]: With dead ends: 10056 [2022-07-21 10:49:36,467 INFO L226 Difference]: Without dead ends: 6794 [2022-07-21 10:49:36,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:49:36,495 INFO L413 NwaCegarLoop]: 5315 mSDtfsCounter, 5899 mSDsluCounter, 3768 mSDsCounter, 0 mSdLazyCounter, 5666 mSolverCounterSat, 2487 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6703 SdHoareTripleChecker+Valid, 9083 SdHoareTripleChecker+Invalid, 8159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2487 IncrementalHoareTripleChecker+Valid, 5666 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2022-07-21 10:49:36,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6703 Valid, 9083 Invalid, 8159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2487 Valid, 5666 Invalid, 6 Unknown, 0 Unchecked, 28.4s Time] [2022-07-21 10:49:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2022-07-21 10:49:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 6444. [2022-07-21 10:49:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6444 states, 4438 states have (on average 1.4100946372239747) internal successors, (6258), 4582 states have internal predecessors, (6258), 1767 states have call successors, (1767), 239 states have call predecessors, (1767), 238 states have return successors, (1761), 1721 states have call predecessors, (1761), 1761 states have call successors, (1761) [2022-07-21 10:49:36,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 9786 transitions. [2022-07-21 10:49:36,983 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 9786 transitions. Word has length 23 [2022-07-21 10:49:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:36,983 INFO L495 AbstractCegarLoop]: Abstraction has 6444 states and 9786 transitions. [2022-07-21 10:49:36,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:49:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 9786 transitions. [2022-07-21 10:49:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 10:49:36,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:36,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:49:36,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 10:49:36,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:36,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2059515394, now seen corresponding path program 1 times [2022-07-21 10:49:36,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:49:36,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747019393] [2022-07-21 10:49:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:49:36,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:49:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:37,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 10:49:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:49:37,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:49:37,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747019393] [2022-07-21 10:49:37,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747019393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:37,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:37,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:49:37,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003214326] [2022-07-21 10:49:37,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:37,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:49:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:49:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:49:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:49:37,165 INFO L87 Difference]: Start difference. First operand 6444 states and 9786 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:49:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:37,669 INFO L93 Difference]: Finished difference Result 16377 states and 24758 transitions. [2022-07-21 10:49:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:49:37,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-21 10:49:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:37,725 INFO L225 Difference]: With dead ends: 16377 [2022-07-21 10:49:37,726 INFO L226 Difference]: Without dead ends: 9936 [2022-07-21 10:49:37,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:49:37,767 INFO L413 NwaCegarLoop]: 5669 mSDtfsCounter, 2629 mSDsluCounter, 4645 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 10314 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 10:49:37,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 10314 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 10:49:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9936 states. [2022-07-21 10:49:38,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9936 to 9924. [2022-07-21 10:49:38,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9924 states, 6781 states have (on average 1.395221943666126) internal successors, (9461), 6989 states have internal predecessors, (9461), 2752 states have call successors, (2752), 391 states have call predecessors, (2752), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-21 10:49:38,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 14959 transitions. [2022-07-21 10:49:38,316 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 14959 transitions. Word has length 42 [2022-07-21 10:49:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:38,317 INFO L495 AbstractCegarLoop]: Abstraction has 9924 states and 14959 transitions. [2022-07-21 10:49:38,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:49:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 14959 transitions. [2022-07-21 10:49:38,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-21 10:49:38,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:38,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:49:38,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 10:49:38,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:38,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:38,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2000340873, now seen corresponding path program 1 times [2022-07-21 10:49:38,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:49:38,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280869205] [2022-07-21 10:49:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:49:38,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:49:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:49:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:38,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:49:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:49:38,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:49:38,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280869205] [2022-07-21 10:49:38,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280869205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:38,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:38,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:49:38,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404586009] [2022-07-21 10:49:38,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:38,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:49:38,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:49:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:49:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:49:38,493 INFO L87 Difference]: Start difference. First operand 9924 states and 14959 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 10:49:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:46,565 INFO L93 Difference]: Finished difference Result 21956 states and 33498 transitions. [2022-07-21 10:49:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:49:46,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-07-21 10:49:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:46,633 INFO L225 Difference]: With dead ends: 21956 [2022-07-21 10:49:46,634 INFO L226 Difference]: Without dead ends: 12035 [2022-07-21 10:49:46,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:49:46,680 INFO L413 NwaCegarLoop]: 5584 mSDtfsCounter, 3125 mSDsluCounter, 7964 mSDsCounter, 0 mSdLazyCounter, 5925 mSolverCounterSat, 1395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3571 SdHoareTripleChecker+Valid, 13548 SdHoareTripleChecker+Invalid, 7320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1395 IncrementalHoareTripleChecker+Valid, 5925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:49:46,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3571 Valid, 13548 Invalid, 7320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1395 Valid, 5925 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-07-21 10:49:46,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12035 states. [2022-07-21 10:49:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12035 to 9928. [2022-07-21 10:49:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9928 states, 6785 states have (on average 1.3949889462048637) internal successors, (9465), 6993 states have internal predecessors, (9465), 2752 states have call successors, (2752), 391 states have call predecessors, (2752), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-21 10:49:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 14963 transitions. [2022-07-21 10:49:47,111 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 14963 transitions. Word has length 47 [2022-07-21 10:49:47,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:47,111 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 14963 transitions. [2022-07-21 10:49:47,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 10:49:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 14963 transitions. [2022-07-21 10:49:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-21 10:49:47,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:47,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:49:47,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 10:49:47,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1312663061, now seen corresponding path program 1 times [2022-07-21 10:49:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:49:47,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744587058] [2022-07-21 10:49:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:49:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:49:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:49:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:47,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:49:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:49:47,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:49:47,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744587058] [2022-07-21 10:49:47,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744587058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:47,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:47,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:49:47,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441389789] [2022-07-21 10:49:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:47,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:49:47,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:49:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:49:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:49:47,398 INFO L87 Difference]: Start difference. First operand 9928 states and 14963 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 10:49:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:53,803 INFO L93 Difference]: Finished difference Result 21045 states and 31941 transitions. [2022-07-21 10:49:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 10:49:53,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-07-21 10:49:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:53,844 INFO L225 Difference]: With dead ends: 21045 [2022-07-21 10:49:53,844 INFO L226 Difference]: Without dead ends: 11120 [2022-07-21 10:49:53,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:49:53,876 INFO L413 NwaCegarLoop]: 4848 mSDtfsCounter, 6600 mSDsluCounter, 4625 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 2968 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7027 SdHoareTripleChecker+Valid, 9473 SdHoareTripleChecker+Invalid, 6725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2968 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-21 10:49:53,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7027 Valid, 9473 Invalid, 6725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2968 Valid, 3757 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-21 10:49:53,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11120 states. [2022-07-21 10:49:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11120 to 9930. [2022-07-21 10:49:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9930 states, 6787 states have (on average 1.394725209960218) internal successors, (9466), 6995 states have internal predecessors, (9466), 2752 states have call successors, (2752), 391 states have call predecessors, (2752), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-21 10:49:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 14964 transitions. [2022-07-21 10:49:54,295 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 14964 transitions. Word has length 50 [2022-07-21 10:49:54,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:54,296 INFO L495 AbstractCegarLoop]: Abstraction has 9930 states and 14964 transitions. [2022-07-21 10:49:54,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 10:49:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 14964 transitions. [2022-07-21 10:49:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 10:49:54,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:54,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:49:54,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 10:49:54,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1860967135, now seen corresponding path program 1 times [2022-07-21 10:49:54,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:49:54,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861348055] [2022-07-21 10:49:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:49:54,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:49:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:49:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:49:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 10:49:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:49:54,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:49:54,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861348055] [2022-07-21 10:49:54,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861348055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:54,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:54,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:49:54,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841300509] [2022-07-21 10:49:54,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:54,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:49:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:49:54,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:49:54,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:49:54,486 INFO L87 Difference]: Start difference. First operand 9930 states and 14964 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:49:57,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:00,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:05,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:08,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:10,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:12,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:15,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:17,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:19,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:50:19,960 INFO L93 Difference]: Finished difference Result 10634 states and 16215 transitions. [2022-07-21 10:50:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:50:19,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 56 [2022-07-21 10:50:19,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:50:20,002 INFO L225 Difference]: With dead ends: 10634 [2022-07-21 10:50:20,002 INFO L226 Difference]: Without dead ends: 10631 [2022-07-21 10:50:20,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:50:20,012 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 6243 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 3635 mSolverCounterSat, 3663 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6747 SdHoareTripleChecker+Valid, 6730 SdHoareTripleChecker+Invalid, 7303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 3635 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:50:20,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6747 Valid, 6730 Invalid, 7303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3663 Valid, 3635 Invalid, 5 Unknown, 0 Unchecked, 25.0s Time] [2022-07-21 10:50:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10631 states. [2022-07-21 10:50:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10631 to 9929. [2022-07-21 10:50:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9929 states, 6787 states have (on average 1.3945778694563136) internal successors, (9465), 6994 states have internal predecessors, (9465), 2751 states have call successors, (2751), 391 states have call predecessors, (2751), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-21 10:50:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9929 states to 9929 states and 14962 transitions. [2022-07-21 10:50:20,478 INFO L78 Accepts]: Start accepts. Automaton has 9929 states and 14962 transitions. Word has length 56 [2022-07-21 10:50:20,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:50:20,478 INFO L495 AbstractCegarLoop]: Abstraction has 9929 states and 14962 transitions. [2022-07-21 10:50:20,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:50:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 9929 states and 14962 transitions. [2022-07-21 10:50:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-21 10:50:20,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:50:20,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:50:20,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 10:50:20,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:50:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:50:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1853828954, now seen corresponding path program 1 times [2022-07-21 10:50:20,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:50:20,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128653169] [2022-07-21 10:50:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:50:20,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:50:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:50:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:20,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:50:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 10:50:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:50:20,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:50:20,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128653169] [2022-07-21 10:50:20,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128653169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:50:20,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:50:20,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:50:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185747794] [2022-07-21 10:50:20,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:50:20,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:50:20,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:50:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:50:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:50:20,640 INFO L87 Difference]: Start difference. First operand 9929 states and 14962 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:50:23,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:26,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:30,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:34,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:36,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:38,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:41,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:43,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:50:46,561 INFO L93 Difference]: Finished difference Result 10633 states and 16213 transitions. [2022-07-21 10:50:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:50:46,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57 [2022-07-21 10:50:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:50:46,606 INFO L225 Difference]: With dead ends: 10633 [2022-07-21 10:50:46,606 INFO L226 Difference]: Without dead ends: 10630 [2022-07-21 10:50:46,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:50:46,617 INFO L413 NwaCegarLoop]: 4298 mSDtfsCounter, 6258 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 3632 mSolverCounterSat, 3663 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6762 SdHoareTripleChecker+Valid, 6716 SdHoareTripleChecker+Invalid, 7302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 3632 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2022-07-21 10:50:46,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6762 Valid, 6716 Invalid, 7302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3663 Valid, 3632 Invalid, 7 Unknown, 0 Unchecked, 25.4s Time] [2022-07-21 10:50:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2022-07-21 10:50:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 9928. [2022-07-21 10:50:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9928 states, 6787 states have (on average 1.394430528952409) internal successors, (9464), 6993 states have internal predecessors, (9464), 2750 states have call successors, (2750), 391 states have call predecessors, (2750), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-21 10:50:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 14960 transitions. [2022-07-21 10:50:47,073 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 14960 transitions. Word has length 57 [2022-07-21 10:50:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:50:47,074 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 14960 transitions. [2022-07-21 10:50:47,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:50:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 14960 transitions. [2022-07-21 10:50:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-21 10:50:47,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:50:47,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:50:47,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 10:50:47,076 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:50:47,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:50:47,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1632550210, now seen corresponding path program 1 times [2022-07-21 10:50:47,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:50:47,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395255848] [2022-07-21 10:50:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:50:47,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:50:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:50:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:50:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 10:50:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:50:47,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:50:47,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395255848] [2022-07-21 10:50:47,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395255848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:50:47,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:50:47,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:50:47,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972151121] [2022-07-21 10:50:47,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:50:47,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:50:47,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:50:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:50:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:50:47,279 INFO L87 Difference]: Start difference. First operand 9928 states and 14960 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:50:50,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:53,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:50:57,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:00,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:02,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:04,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:07,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:09,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:51:12,181 INFO L93 Difference]: Finished difference Result 10632 states and 16211 transitions. [2022-07-21 10:51:12,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:51:12,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2022-07-21 10:51:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:51:12,239 INFO L225 Difference]: With dead ends: 10632 [2022-07-21 10:51:12,239 INFO L226 Difference]: Without dead ends: 10629 [2022-07-21 10:51:12,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:51:12,249 INFO L413 NwaCegarLoop]: 4307 mSDtfsCounter, 6243 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 3644 mSolverCounterSat, 3661 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6742 SdHoareTripleChecker+Valid, 6723 SdHoareTripleChecker+Invalid, 7310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3661 IncrementalHoareTripleChecker+Valid, 3644 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:51:12,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6742 Valid, 6723 Invalid, 7310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3661 Valid, 3644 Invalid, 5 Unknown, 0 Unchecked, 24.5s Time] [2022-07-21 10:51:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10629 states. [2022-07-21 10:51:12,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10629 to 9927. [2022-07-21 10:51:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9927 states, 6787 states have (on average 1.3942831884485045) internal successors, (9463), 6992 states have internal predecessors, (9463), 2749 states have call successors, (2749), 391 states have call predecessors, (2749), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-21 10:51:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9927 states to 9927 states and 14958 transitions. [2022-07-21 10:51:12,704 INFO L78 Accepts]: Start accepts. Automaton has 9927 states and 14958 transitions. Word has length 58 [2022-07-21 10:51:12,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:51:12,705 INFO L495 AbstractCegarLoop]: Abstraction has 9927 states and 14958 transitions. [2022-07-21 10:51:12,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:51:12,705 INFO L276 IsEmpty]: Start isEmpty. Operand 9927 states and 14958 transitions. [2022-07-21 10:51:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-21 10:51:12,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:51:12,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:51:12,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 10:51:12,708 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:51:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:51:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash -932118691, now seen corresponding path program 1 times [2022-07-21 10:51:12,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:51:12,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514585107] [2022-07-21 10:51:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:51:12,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:51:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:12,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:51:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:12,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:51:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:12,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 10:51:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:51:12,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:51:12,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514585107] [2022-07-21 10:51:12,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514585107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:51:12,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:51:12,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:51:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365551801] [2022-07-21 10:51:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:51:12,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:51:12,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:51:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:51:12,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:51:12,866 INFO L87 Difference]: Start difference. First operand 9927 states and 14958 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:51:15,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:18,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:23,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:26,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:29,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:31,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:33,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:36,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:51:41,084 INFO L93 Difference]: Finished difference Result 12477 states and 18937 transitions. [2022-07-21 10:51:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 10:51:41,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 59 [2022-07-21 10:51:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:51:41,180 INFO L225 Difference]: With dead ends: 12477 [2022-07-21 10:51:41,180 INFO L226 Difference]: Without dead ends: 12393 [2022-07-21 10:51:41,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:51:41,194 INFO L413 NwaCegarLoop]: 4355 mSDtfsCounter, 7194 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 5433 mSolverCounterSat, 4388 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7846 SdHoareTripleChecker+Valid, 6845 SdHoareTripleChecker+Invalid, 9829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4388 IncrementalHoareTripleChecker+Valid, 5433 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:51:41,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7846 Valid, 6845 Invalid, 9829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4388 Valid, 5433 Invalid, 8 Unknown, 0 Unchecked, 27.6s Time] [2022-07-21 10:51:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12393 states. [2022-07-21 10:51:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12393 to 11617. [2022-07-21 10:51:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11617 states, 7857 states have (on average 1.3894616265750286) internal successors, (10917), 8099 states have internal predecessors, (10917), 3277 states have call successors, (3277), 483 states have call predecessors, (3277), 482 states have return successors, (3276), 3188 states have call predecessors, (3276), 3276 states have call successors, (3276) [2022-07-21 10:51:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11617 states to 11617 states and 17470 transitions. [2022-07-21 10:51:41,711 INFO L78 Accepts]: Start accepts. Automaton has 11617 states and 17470 transitions. Word has length 59 [2022-07-21 10:51:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:51:41,711 INFO L495 AbstractCegarLoop]: Abstraction has 11617 states and 17470 transitions. [2022-07-21 10:51:41,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:51:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 11617 states and 17470 transitions. [2022-07-21 10:51:41,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 10:51:41,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:51:41,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:51:41,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 10:51:41,724 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:51:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:51:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash 143235578, now seen corresponding path program 1 times [2022-07-21 10:51:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:51:41,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002254060] [2022-07-21 10:51:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:51:41,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:51:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:51:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:41,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:51:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 10:51:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 10:51:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 10:51:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:41,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 10:51:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:51:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:51:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:51:41,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:51:41,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002254060] [2022-07-21 10:51:41,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002254060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:51:41,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:51:41,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:51:41,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013712182] [2022-07-21 10:51:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:51:41,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:51:41,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:51:41,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:51:41,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:51:41,961 INFO L87 Difference]: Start difference. First operand 11617 states and 17470 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:51:47,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:49,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:51:51,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:52:00,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:52:00,707 INFO L93 Difference]: Finished difference Result 30545 states and 46074 transitions. [2022-07-21 10:52:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 10:52:00,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 112 [2022-07-21 10:52:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:52:00,810 INFO L225 Difference]: With dead ends: 30545 [2022-07-21 10:52:00,810 INFO L226 Difference]: Without dead ends: 18931 [2022-07-21 10:52:00,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:52:00,861 INFO L413 NwaCegarLoop]: 6282 mSDtfsCounter, 8266 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 7504 mSolverCounterSat, 6011 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8613 SdHoareTripleChecker+Valid, 9965 SdHoareTripleChecker+Invalid, 13517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6011 IncrementalHoareTripleChecker+Valid, 7504 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-07-21 10:52:00,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8613 Valid, 9965 Invalid, 13517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6011 Valid, 7504 Invalid, 2 Unknown, 0 Unchecked, 17.8s Time] [2022-07-21 10:52:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18931 states. [2022-07-21 10:52:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18931 to 18426. [2022-07-21 10:52:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18426 states, 12502 states have (on average 1.3852183650615901) internal successors, (17318), 12901 states have internal predecessors, (17318), 5161 states have call successors, (5161), 763 states have call predecessors, (5161), 762 states have return successors, (5160), 5018 states have call predecessors, (5160), 5160 states have call successors, (5160) [2022-07-21 10:52:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18426 states to 18426 states and 27639 transitions. [2022-07-21 10:52:01,722 INFO L78 Accepts]: Start accepts. Automaton has 18426 states and 27639 transitions. Word has length 112 [2022-07-21 10:52:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:52:01,723 INFO L495 AbstractCegarLoop]: Abstraction has 18426 states and 27639 transitions. [2022-07-21 10:52:01,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:52:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 18426 states and 27639 transitions. [2022-07-21 10:52:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 10:52:01,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:52:01,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:52:01,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 10:52:01,753 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:52:01,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:52:01,754 INFO L85 PathProgramCache]: Analyzing trace with hash -371106096, now seen corresponding path program 1 times [2022-07-21 10:52:01,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:52:01,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384363092] [2022-07-21 10:52:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:52:01,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:52:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:01,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:52:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:52:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 10:52:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 10:52:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 10:52:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 10:52:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:01,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:52:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 10:52:02,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:52:02,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384363092] [2022-07-21 10:52:02,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384363092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:52:02,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:52:02,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:52:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085441176] [2022-07-21 10:52:02,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:52:02,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:52:02,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:52:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:52:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:52:02,004 INFO L87 Difference]: Start difference. First operand 18426 states and 27639 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 10:52:05,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:52:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:52:11,003 INFO L93 Difference]: Finished difference Result 37269 states and 56404 transitions. [2022-07-21 10:52:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 10:52:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 109 [2022-07-21 10:52:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:52:11,121 INFO L225 Difference]: With dead ends: 37269 [2022-07-21 10:52:11,121 INFO L226 Difference]: Without dead ends: 18846 [2022-07-21 10:52:11,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:52:11,212 INFO L413 NwaCegarLoop]: 4060 mSDtfsCounter, 6987 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 4503 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7229 SdHoareTripleChecker+Valid, 5986 SdHoareTripleChecker+Invalid, 6589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4503 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-07-21 10:52:11,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7229 Valid, 5986 Invalid, 6589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4503 Valid, 2085 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-07-21 10:52:11,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18846 states. [2022-07-21 10:52:12,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18846 to 18346. [2022-07-21 10:52:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18346 states, 12430 states have (on average 1.3612228479485116) internal successors, (16920), 12825 states have internal predecessors, (16920), 5157 states have call successors, (5157), 759 states have call predecessors, (5157), 758 states have return successors, (5156), 5014 states have call predecessors, (5156), 5156 states have call successors, (5156) [2022-07-21 10:52:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18346 states to 18346 states and 27233 transitions. [2022-07-21 10:52:12,099 INFO L78 Accepts]: Start accepts. Automaton has 18346 states and 27233 transitions. Word has length 109 [2022-07-21 10:52:12,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:52:12,100 INFO L495 AbstractCegarLoop]: Abstraction has 18346 states and 27233 transitions. [2022-07-21 10:52:12,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 10:52:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 18346 states and 27233 transitions. [2022-07-21 10:52:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 10:52:12,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:52:12,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:52:12,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 10:52:12,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:52:12,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:52:12,110 INFO L85 PathProgramCache]: Analyzing trace with hash 75172880, now seen corresponding path program 1 times [2022-07-21 10:52:12,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:52:12,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244541370] [2022-07-21 10:52:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:52:12,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:52:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:52:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:52:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 10:52:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 10:52:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 10:52:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 10:52:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:52:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:52:12,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:52:12,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244541370] [2022-07-21 10:52:12,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244541370] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 10:52:12,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968998222] [2022-07-21 10:52:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:52:12,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:52:12,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:52:12,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 10:52:12,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 10:52:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:13,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 3582 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 10:52:13,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:52:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 10:52:13,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:52:13,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968998222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:52:13,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 10:52:13,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2022-07-21 10:52:13,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238923336] [2022-07-21 10:52:13,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:52:13,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:52:13,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:52:13,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:52:13,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 10:52:13,683 INFO L87 Difference]: Start difference. First operand 18346 states and 27233 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:52:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:52:14,296 INFO L93 Difference]: Finished difference Result 36717 states and 54571 transitions. [2022-07-21 10:52:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:52:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 109 [2022-07-21 10:52:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:52:14,385 INFO L225 Difference]: With dead ends: 36717 [2022-07-21 10:52:14,385 INFO L226 Difference]: Without dead ends: 18374 [2022-07-21 10:52:14,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 10:52:14,446 INFO L413 NwaCegarLoop]: 4821 mSDtfsCounter, 2 mSDsluCounter, 14442 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19263 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:52:14,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19263 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 10:52:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18374 states. [2022-07-21 10:52:15,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18374 to 18362. [2022-07-21 10:52:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18362 states, 12442 states have (on average 1.3608744574827198) internal successors, (16932), 12837 states have internal predecessors, (16932), 5157 states have call successors, (5157), 759 states have call predecessors, (5157), 762 states have return successors, (5218), 5018 states have call predecessors, (5218), 5156 states have call successors, (5218) [2022-07-21 10:52:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18362 states to 18362 states and 27307 transitions. [2022-07-21 10:52:15,324 INFO L78 Accepts]: Start accepts. Automaton has 18362 states and 27307 transitions. Word has length 109 [2022-07-21 10:52:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:52:15,325 INFO L495 AbstractCegarLoop]: Abstraction has 18362 states and 27307 transitions. [2022-07-21 10:52:15,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:52:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 18362 states and 27307 transitions. [2022-07-21 10:52:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 10:52:15,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:52:15,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:52:15,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 10:52:15,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 10:52:15,548 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:52:15,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:52:15,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1707976879, now seen corresponding path program 1 times [2022-07-21 10:52:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:52:15,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865299363] [2022-07-21 10:52:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:52:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:52:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:15,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 10:52:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:52:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 10:52:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 10:52:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 10:52:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 10:52:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:52:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:52:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 10:52:15,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:52:15,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865299363] [2022-07-21 10:52:15,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865299363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:52:15,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:52:15,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:52:15,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828922348] [2022-07-21 10:52:15,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:52:15,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:52:15,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:52:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:52:15,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:52:15,859 INFO L87 Difference]: Start difference. First operand 18362 states and 27307 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:52:20,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:52:22,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:52:25,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:52:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:52:31,676 INFO L93 Difference]: Finished difference Result 18862 states and 28079 transitions. [2022-07-21 10:52:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 10:52:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 109 [2022-07-21 10:52:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:52:31,679 INFO L225 Difference]: With dead ends: 18862 [2022-07-21 10:52:31,679 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 10:52:31,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:52:31,719 INFO L413 NwaCegarLoop]: 5093 mSDtfsCounter, 4541 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 5688 mSolverCounterSat, 3834 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 8454 SdHoareTripleChecker+Invalid, 9525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3834 IncrementalHoareTripleChecker+Valid, 5688 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:52:31,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 8454 Invalid, 9525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3834 Valid, 5688 Invalid, 3 Unknown, 0 Unchecked, 15.0s Time] [2022-07-21 10:52:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 10:52:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 10:52:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:52:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 10:52:31,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2022-07-21 10:52:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:52:31,726 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 10:52:31,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:52:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 10:52:31,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 10:52:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 10:52:31,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 10:52:31,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.