./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 eb692b52 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-?-eb692b5 [2022-07-19 23:17:02,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:17:02,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:17:02,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:17:02,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:17:03,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:17:03,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:17:03,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:17:03,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:17:03,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:17:03,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:17:03,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:17:03,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:17:03,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:17:03,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:17:03,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:17:03,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:17:03,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:17:03,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:17:03,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:17:03,024 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:17:03,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:17:03,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:17:03,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:17:03,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:17:03,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:17:03,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:17:03,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:17:03,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:17:03,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:17:03,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:17:03,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:17:03,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:17:03,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:17:03,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:17:03,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:17:03,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:17:03,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:17:03,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:17:03,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:17:03,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:17:03,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:17:03,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:17:03,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:17:03,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:17:03,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:17:03,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:17:03,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:17:03,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:17:03,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:17:03,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:17:03,070 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:17:03,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:17:03,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:17:03,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:17:03,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:17:03,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:17:03,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:17:03,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:17:03,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:17:03,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:17:03,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:17:03,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:17:03,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:17:03,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:17:03,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:17:03,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:17:03,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:17:03,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:17:03,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:17:03,074 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:17:03,075 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:17:03,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:17:03,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 [2022-07-19 23:17:03,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:17:03,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:17:03,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:17:03,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:17:03,323 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:17:03,324 INFO L432 ainManager$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 [2022-07-19 23:17:03,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fcd3e17/86cf11d08ac542d1b057a3aa8730dd24/FLAG0ab6a1df9 [2022-07-19 23:17:04,068 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:17:04,069 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 [2022-07-19 23:17:04,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fcd3e17/86cf11d08ac542d1b057a3aa8730dd24/FLAG0ab6a1df9 [2022-07-19 23:17:04,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fcd3e17/86cf11d08ac542d1b057a3aa8730dd24 [2022-07-19 23:17:04,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:17:04,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:17:04,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:17:04,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:17:04,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:17:04,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:17:04" (1/1) ... [2022-07-19 23:17:04,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b72417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:04, skipping insertion in model container [2022-07-19 23:17:04,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:17:04" (1/1) ... [2022-07-19 23:17:04,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:17:04,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:17:06,628 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] [2022-07-19 23:17:06,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:17:06,808 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:17:07,127 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] [2022-07-19 23:17:07,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:17:07,266 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:17:07,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07 WrapperNode [2022-07-19 23:17:07,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:17:07,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:17:07,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:17:07,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:17:07,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,560 INFO L137 Inliner]: procedures = 395, calls = 4060, calls flagged for inlining = 199, calls inlined = 146, statements flattened = 7353 [2022-07-19 23:17:07,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:17:07,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:17:07,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:17:07,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:17:07,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:17:07,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:17:07,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:17:07,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:17:07,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (1/1) ... [2022-07-19 23:17:07,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:17:07,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:17:07,876 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) [2022-07-19 23:17:07,919 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 [2022-07-19 23:17:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_wait_until_sent [2022-07-19 23:17:07,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_wait_until_sent [2022-07-19 23:17:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-19 23:17:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-19 23:17:07,930 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-19 23:17:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_start [2022-07-19 23:17:07,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_start [2022-07-19 23:17:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_txidle [2022-07-19 23:17:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_txidle [2022-07-19 23:17:07,931 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2022-07-19 23:17:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2022-07-19 23:17:07,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:17:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:17:07,931 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopback_frame [2022-07-19 23:17:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopback_frame [2022-07-19 23:17:07,931 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2022-07-19 23:17:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2022-07-19 23:17:07,932 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_receiver [2022-07-19 23:17:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_receiver [2022-07-19 23:17:07,932 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_serial_signals [2022-07-19 23:17:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_serial_signals [2022-07-19 23:17:07,932 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_trace_block [2022-07-19 23:17:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_trace_block [2022-07-19 23:17:07,932 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-07-19 23:17:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-07-19 23:17:07,933 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-19 23:17:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-19 23:17:07,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mgsl_ops_disconnect_2 [2022-07-19 23:17:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mgsl_ops_disconnect_2 [2022-07-19 23:17:07,934 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2022-07-19 23:17:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2022-07-19 23:17:07,934 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 23:17:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 23:17:07,934 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-19 23:17:07,934 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2022-07-19 23:17:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2022-07-19 23:17:07,935 INFO L130 BoogieDeclarations]: Found specification of procedure load_next_tx_holding_buffer [2022-07-19 23:17:07,935 INFO L138 BoogieDeclarations]: Found implementation of procedure load_next_tx_holding_buffer [2022-07-19 23:17:07,935 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-19 23:17:07,935 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-19 23:17:07,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tty_port [2022-07-19 23:17:07,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tty_port [2022-07-19 23:17:07,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:17:07,935 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2022-07-19 23:17:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2022-07-19 23:17:07,936 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-19 23:17:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-19 23:17:07,936 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-19 23:17:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-19 23:17:07,936 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-19 23:17:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-19 23:17:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 23:17:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 23:17:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2022-07-19 23:17:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2022-07-19 23:17:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutDmaReg [2022-07-19 23:17:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutDmaReg [2022-07-19 23:17:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-19 23:17:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-19 23:17:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_cancel_transmit [2022-07-19 23:17:07,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_cancel_transmit [2022-07-19 23:17:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure usc_load_txfifo [2022-07-19 23:17:07,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_load_txfifo [2022-07-19 23:17:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-19 23:17:07,939 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-19 23:17:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2022-07-19 23:17:07,939 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2022-07-19 23:17:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:17:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-19 23:17:07,940 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-19 23:17:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-19 23:17:07,940 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-19 23:17:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-19 23:17:07,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-19 23:17:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:17:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:17:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure usc_reset [2022-07-19 23:17:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_reset [2022-07-19 23:17:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_free_frame_memory [2022-07-19 23:17:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_free_frame_memory [2022-07-19 23:17:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InReg [2022-07-19 23:17:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InReg [2022-07-19 23:17:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-07-19 23:17:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-07-19 23:17:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure usc_enable_loopback [2022-07-19 23:17:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_enable_loopback [2022-07-19 23:17:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_load_tx_dma_buffer [2022-07-19 23:17:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_load_tx_dma_buffer [2022-07-19 23:17:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure usc_DmaCmd [2022-07-19 23:17:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_DmaCmd [2022-07-19 23:17:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_buffer [2022-07-19 23:17:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_buffer [2022-07-19 23:17:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-19 23:17:07,943 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-19 23:17:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2022-07-19 23:17:07,943 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2022-07-19 23:17:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure usc_RTCmd [2022-07-19 23:17:07,944 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_RTCmd [2022-07-19 23:17:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:17:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_sdlc_mode [2022-07-19 23:17:07,944 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_sdlc_mode [2022-07-19 23:17:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_receiver [2022-07-19 23:17:07,944 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_receiver [2022-07-19 23:17:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:17:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:17:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-19 23:17:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-19 23:17:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-19 23:17:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_add_device [2022-07-19 23:17:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_add_device [2022-07-19 23:17:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_unthrottle [2022-07-19 23:17:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_unthrottle [2022-07-19 23:17:07,946 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_throttle [2022-07-19 23:17:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_throttle [2022-07-19 23:17:07,946 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutReg [2022-07-19 23:17:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutReg [2022-07-19 23:17:07,946 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-19 23:17:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-19 23:17:07,947 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2022-07-19 23:17:07,949 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2022-07-19 23:17:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_set_termios [2022-07-19 23:17:07,949 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_set_termios [2022-07-19 23:17:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-19 23:17:07,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-19 23:17:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-19 23:17:07,951 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-19 23:17:07,951 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_transmitter [2022-07-19 23:17:07,951 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_transmitter [2022-07-19 23:17:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:17:07,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:17:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-07-19 23:17:07,955 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-07-19 23:17:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:17:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:17:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_chars [2022-07-19 23:17:07,955 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_chars [2022-07-19 23:17:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-19 23:17:07,956 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-19 23:17:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-19 23:17:07,956 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-19 23:17:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_send_xchar [2022-07-19 23:17:07,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_send_xchar [2022-07-19 23:17:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_change_params [2022-07-19 23:17:07,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_change_params [2022-07-19 23:17:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:17:07,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:17:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:17:07,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:17:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure usc_get_serial_signals [2022-07-19 23:17:07,957 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_get_serial_signals [2022-07-19 23:17:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_reset_rx_dma_buffers [2022-07-19 23:17:07,957 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_reset_rx_dma_buffers [2022-07-19 23:17:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:17:07,958 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:17:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-19 23:17:07,958 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-19 23:17:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_transmitter [2022-07-19 23:17:07,958 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_transmitter [2022-07-19 23:17:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-19 23:17:07,958 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-19 23:17:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2022-07-19 23:17:07,958 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2022-07-19 23:17:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 23:17:07,959 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 23:17:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_paranoia_check [2022-07-19 23:17:07,959 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_paranoia_check [2022-07-19 23:17:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InDmaReg [2022-07-19 23:17:07,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InDmaReg [2022-07-19 23:17:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:17:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:17:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_active [2022-07-19 23:17:07,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_active [2022-07-19 23:17:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_stop [2022-07-19 23:17:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_stop [2022-07-19 23:17:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-19 23:17:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-19 23:17:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:17:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_remove_one [2022-07-19 23:17:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_remove_one [2022-07-19 23:17:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-19 23:17:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-19 23:17:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_cleanup [2022-07-19 23:17:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_cleanup [2022-07-19 23:17:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-19 23:17:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-19 23:17:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-19 23:17:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-19 23:17:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-07-19 23:17:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-07-19 23:17:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-19 23:17:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-19 23:17:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-07-19 23:17:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-07-19 23:17:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_write_room [2022-07-19 23:17:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_write_room [2022-07-19 23:17:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_break [2022-07-19 23:17:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_break [2022-07-19 23:17:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_allocate_device [2022-07-19 23:17:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_allocate_device [2022-07-19 23:17:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-07-19 23:17:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-07-19 23:17:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_install [2022-07-19 23:17:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_install [2022-07-19 23:17:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2022-07-19 23:17:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2022-07-19 23:17:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_release_resources [2022-07-19 23:17:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_release_resources [2022-07-19 23:17:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-19 23:17:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-19 23:17:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-19 23:17:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-19 23:17:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-19 23:17:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-19 23:17:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_send_done [2022-07-19 23:17:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_send_done [2022-07-19 23:17:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-19 23:17:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-19 23:17:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-07-19 23:17:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-07-19 23:17:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:17:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:17:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_ioctl [2022-07-19 23:17:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_ioctl [2022-07-19 23:17:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-07-19 23:17:07,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-07-19 23:17:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:17:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:17:07,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:17:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure msgl_get_icount [2022-07-19 23:17:07,965 INFO L138 BoogieDeclarations]: Found implementation of procedure msgl_get_icount [2022-07-19 23:17:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_chars_in_buffer [2022-07-19 23:17:07,965 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_chars_in_buffer [2022-07-19 23:17:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-19 23:17:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-19 23:17:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2022-07-19 23:17:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2022-07-19 23:17:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-19 23:17:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-19 23:17:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_put_char [2022-07-19 23:17:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_put_char [2022-07-19 23:17:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_program_hw [2022-07-19 23:17:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_program_hw [2022-07-19 23:17:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2022-07-19 23:17:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2022-07-19 23:17:07,967 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_hangup [2022-07-19 23:17:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_hangup [2022-07-19 23:17:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-19 23:17:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-19 23:17:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-07-19 23:17:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-07-19 23:17:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-19 23:17:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-19 23:17:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:17:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_alloc_frame_memory [2022-07-19 23:17:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_alloc_frame_memory [2022-07-19 23:17:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-07-19 23:17:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-07-19 23:17:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-07-19 23:17:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-07-19 23:17:08,797 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:17:08,799 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:17:30,389 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:17:30,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:17:30,410 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:17:30,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:17:30 BoogieIcfgContainer [2022-07-19 23:17:30,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:17:30,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:17:30,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:17:30,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:17:30,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:17:04" (1/3) ... [2022-07-19 23:17:30,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32318191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:17:30, skipping insertion in model container [2022-07-19 23:17:30,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:17:07" (2/3) ... [2022-07-19 23:17:30,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32318191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:17:30, skipping insertion in model container [2022-07-19 23:17:30,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:17:30" (3/3) ... [2022-07-19 23:17:30,422 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-07-19 23:17:30,435 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:17:30,435 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:17:30,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:17:30,554 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@1ab557a7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2648a9ed [2022-07-19 23:17:30,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:17:30,567 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) [2022-07-19 23:17:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 23:17:30,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:17:30,590 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] [2022-07-19 23:17:30,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:17:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:17:30,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1697268518, now seen corresponding path program 1 times [2022-07-19 23:17:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:17:30,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466200874] [2022-07-19 23:17:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:17:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:17:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:17:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:17:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:17:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:17:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:17:31,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466200874] [2022-07-19 23:17:31,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466200874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:17:31,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:17:31,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:17:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497069030] [2022-07-19 23:17:31,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:17:31,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:17:31,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:17:31,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:17:31,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:17:31,089 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) [2022-07-19 23:17:35,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:17:37,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:17:43,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:17:47,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:17:50,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:17:52,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:17:54,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:17:57,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:00,274 INFO L93 Difference]: Finished difference Result 10056 states and 15715 transitions. [2022-07-19 23:18:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:18:00,276 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 [2022-07-19 23:18:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:00,350 INFO L225 Difference]: With dead ends: 10056 [2022-07-19 23:18:00,350 INFO L226 Difference]: Without dead ends: 6794 [2022-07-19 23:18:00,376 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 [2022-07-19 23:18:00,378 INFO L413 NwaCegarLoop]: 5317 mSDtfsCounter, 5899 mSDsluCounter, 3768 mSDsCounter, 0 mSdLazyCounter, 5666 mSolverCounterSat, 2487 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6701 SdHoareTripleChecker+Valid, 9085 SdHoareTripleChecker+Invalid, 8161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2487 IncrementalHoareTripleChecker+Valid, 5666 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:00,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6701 Valid, 9085 Invalid, 8161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2487 Valid, 5666 Invalid, 8 Unknown, 0 Unchecked, 28.5s Time] [2022-07-19 23:18:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2022-07-19 23:18:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 6444. [2022-07-19 23:18:00,781 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) [2022-07-19 23:18:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 9786 transitions. [2022-07-19 23:18:00,829 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 9786 transitions. Word has length 23 [2022-07-19 23:18:00,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:00,830 INFO L495 AbstractCegarLoop]: Abstraction has 6444 states and 9786 transitions. [2022-07-19 23:18:00,830 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) [2022-07-19 23:18:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 9786 transitions. [2022-07-19 23:18:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 23:18:00,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:00,839 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] [2022-07-19 23:18:00,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:18:00,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:00,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:00,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2059515394, now seen corresponding path program 1 times [2022-07-19 23:18:00,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:18:00,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667117518] [2022-07-19 23:18:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:18:00,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:18:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:00,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:18:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:18:00,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:18:00,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667117518] [2022-07-19 23:18:00,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667117518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:00,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:00,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:18:00,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778295690] [2022-07-19 23:18:00,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:00,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:18:00,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:18:00,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:18:00,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:18:00,989 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) [2022-07-19 23:18:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:01,536 INFO L93 Difference]: Finished difference Result 16377 states and 24758 transitions. [2022-07-19 23:18:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:18:01,536 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 [2022-07-19 23:18:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:01,597 INFO L225 Difference]: With dead ends: 16377 [2022-07-19 23:18:01,597 INFO L226 Difference]: Without dead ends: 9936 [2022-07-19 23:18:01,631 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 [2022-07-19 23:18:01,635 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:01,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 10314 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:18:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9936 states. [2022-07-19 23:18:02,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9936 to 9924. [2022-07-19 23:18:02,182 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) [2022-07-19 23:18:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 14959 transitions. [2022-07-19 23:18:02,236 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 14959 transitions. Word has length 42 [2022-07-19 23:18:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:02,237 INFO L495 AbstractCegarLoop]: Abstraction has 9924 states and 14959 transitions. [2022-07-19 23:18:02,237 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) [2022-07-19 23:18:02,238 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 14959 transitions. [2022-07-19 23:18:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-19 23:18:02,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:02,241 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] [2022-07-19 23:18:02,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:18:02,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:02,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2000340873, now seen corresponding path program 1 times [2022-07-19 23:18:02,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:18:02,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489234110] [2022-07-19 23:18:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:18:02,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:18:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:18:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:18:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:18:02,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:18:02,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489234110] [2022-07-19 23:18:02,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489234110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:02,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:02,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:18:02,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869549450] [2022-07-19 23:18:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:18:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:18:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:18:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:18:02,426 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) [2022-07-19 23:18:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:10,922 INFO L93 Difference]: Finished difference Result 21956 states and 33498 transitions. [2022-07-19 23:18:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:18:10,923 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 [2022-07-19 23:18:10,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:10,993 INFO L225 Difference]: With dead ends: 21956 [2022-07-19 23:18:10,993 INFO L226 Difference]: Without dead ends: 12035 [2022-07-19 23:18:11,041 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 [2022-07-19 23:18:11,042 INFO L413 NwaCegarLoop]: 5585 mSDtfsCounter, 3125 mSDsluCounter, 7968 mSDsCounter, 0 mSdLazyCounter, 5925 mSolverCounterSat, 1395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 13553 SdHoareTripleChecker+Invalid, 7320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1395 IncrementalHoareTripleChecker+Valid, 5925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:11,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3572 Valid, 13553 Invalid, 7320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1395 Valid, 5925 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-07-19 23:18:11,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12035 states. [2022-07-19 23:18:11,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12035 to 9928. [2022-07-19 23:18:11,557 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) [2022-07-19 23:18:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 14963 transitions. [2022-07-19 23:18:11,598 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 14963 transitions. Word has length 47 [2022-07-19 23:18:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:11,599 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 14963 transitions. [2022-07-19 23:18:11,599 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) [2022-07-19 23:18:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 14963 transitions. [2022-07-19 23:18:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 23:18:11,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:11,601 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] [2022-07-19 23:18:11,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:18:11,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1312663061, now seen corresponding path program 1 times [2022-07-19 23:18:11,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:18:11,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690006631] [2022-07-19 23:18:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:18:11,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:18:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:18:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:18:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:18:11,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:18:11,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690006631] [2022-07-19 23:18:11,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690006631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:11,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:11,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:18:11,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039756035] [2022-07-19 23:18:11,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:11,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:18:11,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:18:11,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:18:11,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:18:11,873 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) [2022-07-19 23:18:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:18,195 INFO L93 Difference]: Finished difference Result 21045 states and 31941 transitions. [2022-07-19 23:18:18,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:18:18,195 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 [2022-07-19 23:18:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:18,242 INFO L225 Difference]: With dead ends: 21045 [2022-07-19 23:18:18,243 INFO L226 Difference]: Without dead ends: 11120 [2022-07-19 23:18:18,273 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 [2022-07-19 23:18:18,274 INFO L413 NwaCegarLoop]: 4850 mSDtfsCounter, 6600 mSDsluCounter, 4629 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 2968 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7025 SdHoareTripleChecker+Valid, 9479 SdHoareTripleChecker+Invalid, 6725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2968 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:18,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7025 Valid, 9479 Invalid, 6725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2968 Valid, 3757 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-19 23:18:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11120 states. [2022-07-19 23:18:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11120 to 9930. [2022-07-19 23:18:18,901 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) [2022-07-19 23:18:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 14964 transitions. [2022-07-19 23:18:18,947 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 14964 transitions. Word has length 50 [2022-07-19 23:18:18,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:18,949 INFO L495 AbstractCegarLoop]: Abstraction has 9930 states and 14964 transitions. [2022-07-19 23:18:18,949 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) [2022-07-19 23:18:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 14964 transitions. [2022-07-19 23:18:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-19 23:18:18,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:18,951 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] [2022-07-19 23:18:18,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:18:18,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:18,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1860967135, now seen corresponding path program 1 times [2022-07-19 23:18:18,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:18:18,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503423470] [2022-07-19 23:18:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:18:18,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:18:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:18:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:18:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 23:18:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:18:19,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:18:19,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503423470] [2022-07-19 23:18:19,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503423470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:19,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:19,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:18:19,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096714113] [2022-07-19 23:18:19,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:19,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:18:19,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:18:19,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:18:19,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:18:19,158 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) [2022-07-19 23:18:22,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:25,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:30,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:33,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:35,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:37,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:39,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:41,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:44,511 INFO L93 Difference]: Finished difference Result 10634 states and 16215 transitions. [2022-07-19 23:18:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:18:44,511 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 [2022-07-19 23:18:44,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:44,551 INFO L225 Difference]: With dead ends: 10634 [2022-07-19 23:18:44,551 INFO L226 Difference]: Without dead ends: 10631 [2022-07-19 23:18:44,559 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 [2022-07-19 23:18:44,559 INFO L413 NwaCegarLoop]: 4309 mSDtfsCounter, 6243 mSDsluCounter, 2419 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 3663 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6748 SdHoareTripleChecker+Valid, 6728 SdHoareTripleChecker+Invalid, 7302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:44,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6748 Valid, 6728 Invalid, 7302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3663 Valid, 3633 Invalid, 6 Unknown, 0 Unchecked, 25.0s Time] [2022-07-19 23:18:44,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10631 states. [2022-07-19 23:18:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10631 to 9929. [2022-07-19 23:18:45,026 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) [2022-07-19 23:18:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9929 states to 9929 states and 14962 transitions. [2022-07-19 23:18:45,060 INFO L78 Accepts]: Start accepts. Automaton has 9929 states and 14962 transitions. Word has length 56 [2022-07-19 23:18:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:45,060 INFO L495 AbstractCegarLoop]: Abstraction has 9929 states and 14962 transitions. [2022-07-19 23:18:45,060 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) [2022-07-19 23:18:45,060 INFO L276 IsEmpty]: Start isEmpty. Operand 9929 states and 14962 transitions. [2022-07-19 23:18:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-19 23:18:45,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:45,063 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] [2022-07-19 23:18:45,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:18:45,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:45,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:45,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1853828954, now seen corresponding path program 1 times [2022-07-19 23:18:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:18:45,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522163397] [2022-07-19 23:18:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:18:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:18:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:18:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:18:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 23:18:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:18:45,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:18:45,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522163397] [2022-07-19 23:18:45,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522163397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:45,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:45,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:18:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653480134] [2022-07-19 23:18:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:45,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:18:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:18:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:18:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:18:45,241 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) [2022-07-19 23:18:48,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:51,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:55,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:18:58,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:01,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:03,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:05,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:07,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:19:11,578 INFO L93 Difference]: Finished difference Result 10633 states and 16213 transitions. [2022-07-19 23:19:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:19:11,578 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 [2022-07-19 23:19:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:19:11,628 INFO L225 Difference]: With dead ends: 10633 [2022-07-19 23:19:11,628 INFO L226 Difference]: Without dead ends: 10630 [2022-07-19 23:19:11,638 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 [2022-07-19 23:19:11,639 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 6258 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 3663 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6760 SdHoareTripleChecker+Valid, 6720 SdHoareTripleChecker+Invalid, 7304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:19:11,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6760 Valid, 6720 Invalid, 7304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3663 Valid, 3633 Invalid, 8 Unknown, 0 Unchecked, 25.9s Time] [2022-07-19 23:19:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2022-07-19 23:19:12,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 9928. [2022-07-19 23:19:12,146 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) [2022-07-19 23:19:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 14960 transitions. [2022-07-19 23:19:12,188 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 14960 transitions. Word has length 57 [2022-07-19 23:19:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:19:12,189 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 14960 transitions. [2022-07-19 23:19:12,189 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) [2022-07-19 23:19:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 14960 transitions. [2022-07-19 23:19:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 23:19:12,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:19:12,192 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] [2022-07-19 23:19:12,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:19:12,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:19:12,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:19:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1632550210, now seen corresponding path program 1 times [2022-07-19 23:19:12,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:19:12,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395108238] [2022-07-19 23:19:12,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:19:12,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:19:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:19:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:19:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 23:19:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:19:12,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:19:12,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395108238] [2022-07-19 23:19:12,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395108238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:19:12,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:19:12,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:19:12,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743271719] [2022-07-19 23:19:12,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:19:12,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:19:12,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:19:12,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:19:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:19:12,384 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) [2022-07-19 23:19:15,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:19,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:21,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:24,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:27,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:30,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:32,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:34,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:36,822 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 [] [2022-07-19 23:19:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:19:39,150 INFO L93 Difference]: Finished difference Result 10632 states and 16211 transitions. [2022-07-19 23:19:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:19:39,151 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 [2022-07-19 23:19:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:19:39,204 INFO L225 Difference]: With dead ends: 10632 [2022-07-19 23:19:39,204 INFO L226 Difference]: Without dead ends: 10629 [2022-07-19 23:19:39,213 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 [2022-07-19 23:19:39,214 INFO L413 NwaCegarLoop]: 4309 mSDtfsCounter, 6243 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 3645 mSolverCounterSat, 3661 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6740 SdHoareTripleChecker+Valid, 6727 SdHoareTripleChecker+Invalid, 7312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3661 IncrementalHoareTripleChecker+Valid, 3645 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:19:39,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6740 Valid, 6727 Invalid, 7312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3661 Valid, 3645 Invalid, 6 Unknown, 0 Unchecked, 26.3s Time] [2022-07-19 23:19:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10629 states. [2022-07-19 23:19:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10629 to 9927. [2022-07-19 23:19:39,673 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) [2022-07-19 23:19:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9927 states to 9927 states and 14958 transitions. [2022-07-19 23:19:39,707 INFO L78 Accepts]: Start accepts. Automaton has 9927 states and 14958 transitions. Word has length 58 [2022-07-19 23:19:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:19:39,708 INFO L495 AbstractCegarLoop]: Abstraction has 9927 states and 14958 transitions. [2022-07-19 23:19:39,708 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) [2022-07-19 23:19:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 9927 states and 14958 transitions. [2022-07-19 23:19:39,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 23:19:39,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:19:39,710 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] [2022-07-19 23:19:39,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:19:39,710 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:19:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:19:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -932118691, now seen corresponding path program 1 times [2022-07-19 23:19:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:19:39,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461497751] [2022-07-19 23:19:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:19:39,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:19:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:19:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:19:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:39,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 23:19:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:19:39,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:19:39,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461497751] [2022-07-19 23:19:39,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461497751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:19:39,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:19:39,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:19:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588419713] [2022-07-19 23:19:39,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:19:39,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:19:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:19:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:19:39,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:19:39,856 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) [2022-07-19 23:19:42,583 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 [] [2022-07-19 23:19:45,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:50,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:53,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:55,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:19:58,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:20:00,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:20:02,581 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 [] [2022-07-19 23:20:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:07,563 INFO L93 Difference]: Finished difference Result 12477 states and 18937 transitions. [2022-07-19 23:20:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:20:07,564 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 [2022-07-19 23:20:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:07,621 INFO L225 Difference]: With dead ends: 12477 [2022-07-19 23:20:07,622 INFO L226 Difference]: Without dead ends: 12393 [2022-07-19 23:20:07,634 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 [2022-07-19 23:20:07,634 INFO L413 NwaCegarLoop]: 4355 mSDtfsCounter, 7194 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 5434 mSolverCounterSat, 4388 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7846 SdHoareTripleChecker+Valid, 6845 SdHoareTripleChecker+Invalid, 9829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4388 IncrementalHoareTripleChecker+Valid, 5434 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:07,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7846 Valid, 6845 Invalid, 9829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4388 Valid, 5434 Invalid, 7 Unknown, 0 Unchecked, 27.1s Time] [2022-07-19 23:20:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12393 states. [2022-07-19 23:20:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12393 to 11617. [2022-07-19 23:20:08,149 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) [2022-07-19 23:20:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11617 states to 11617 states and 17470 transitions. [2022-07-19 23:20:08,188 INFO L78 Accepts]: Start accepts. Automaton has 11617 states and 17470 transitions. Word has length 59 [2022-07-19 23:20:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:08,189 INFO L495 AbstractCegarLoop]: Abstraction has 11617 states and 17470 transitions. [2022-07-19 23:20:08,189 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) [2022-07-19 23:20:08,189 INFO L276 IsEmpty]: Start isEmpty. Operand 11617 states and 17470 transitions. [2022-07-19 23:20:08,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 23:20:08,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:08,201 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] [2022-07-19 23:20:08,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:20:08,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:08,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash 143235578, now seen corresponding path program 1 times [2022-07-19 23:20:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:08,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526251454] [2022-07-19 23:20:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:20:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:08,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:20:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 23:20:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:08,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 23:20:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:20:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 23:20:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:20:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:20:08,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:08,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526251454] [2022-07-19 23:20:08,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526251454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:08,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:08,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:20:08,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991061445] [2022-07-19 23:20:08,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:08,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:20:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:08,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:20:08,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:20:08,410 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) [2022-07-19 23:20:13,499 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 [] [2022-07-19 23:20:15,633 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 [] [2022-07-19 23:20:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:24,656 INFO L93 Difference]: Finished difference Result 30545 states and 46074 transitions. [2022-07-19 23:20:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:20:24,656 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 [2022-07-19 23:20:24,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:24,736 INFO L225 Difference]: With dead ends: 30545 [2022-07-19 23:20:24,736 INFO L226 Difference]: Without dead ends: 18931 [2022-07-19 23:20:24,917 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 [2022-07-19 23:20:24,919 INFO L413 NwaCegarLoop]: 6282 mSDtfsCounter, 8266 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 7506 mSolverCounterSat, 6009 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8613 SdHoareTripleChecker+Valid, 9965 SdHoareTripleChecker+Invalid, 13517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6009 IncrementalHoareTripleChecker+Valid, 7506 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:24,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8613 Valid, 9965 Invalid, 13517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6009 Valid, 7506 Invalid, 2 Unknown, 0 Unchecked, 15.4s Time] [2022-07-19 23:20:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18931 states. [2022-07-19 23:20:25,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18931 to 18426. [2022-07-19 23:20:25,535 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) [2022-07-19 23:20:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18426 states to 18426 states and 27639 transitions. [2022-07-19 23:20:25,602 INFO L78 Accepts]: Start accepts. Automaton has 18426 states and 27639 transitions. Word has length 112 [2022-07-19 23:20:25,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:25,603 INFO L495 AbstractCegarLoop]: Abstraction has 18426 states and 27639 transitions. [2022-07-19 23:20:25,603 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) [2022-07-19 23:20:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 18426 states and 27639 transitions. [2022-07-19 23:20:25,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 23:20:25,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:25,613 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] [2022-07-19 23:20:25,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 23:20:25,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:25,613 INFO L85 PathProgramCache]: Analyzing trace with hash -371106096, now seen corresponding path program 1 times [2022-07-19 23:20:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:25,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33722228] [2022-07-19 23:20:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:25,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:20:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:25,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:20:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:25,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:20:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:25,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 23:20:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:25,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:20:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 23:20:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:20:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:20:25,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:25,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33722228] [2022-07-19 23:20:25,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33722228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:25,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:25,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:20:25,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236978375] [2022-07-19 23:20:25,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:25,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:20:25,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:25,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:20:25,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:20:25,983 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) [2022-07-19 23:20:29,608 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 [] [2022-07-19 23:20:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:33,931 INFO L93 Difference]: Finished difference Result 37269 states and 56404 transitions. [2022-07-19 23:20:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:20:33,932 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 [2022-07-19 23:20:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:34,007 INFO L225 Difference]: With dead ends: 37269 [2022-07-19 23:20:34,007 INFO L226 Difference]: Without dead ends: 18846 [2022-07-19 23:20:34,072 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 [2022-07-19 23:20:34,072 INFO L413 NwaCegarLoop]: 4060 mSDtfsCounter, 6987 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 4505 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7229 SdHoareTripleChecker+Valid, 5986 SdHoareTripleChecker+Invalid, 6589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4505 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:34,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7229 Valid, 5986 Invalid, 6589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4505 Valid, 2083 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-07-19 23:20:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18846 states. [2022-07-19 23:20:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18846 to 18346. [2022-07-19 23:20:34,812 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) [2022-07-19 23:20:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18346 states to 18346 states and 27233 transitions. [2022-07-19 23:20:34,886 INFO L78 Accepts]: Start accepts. Automaton has 18346 states and 27233 transitions. Word has length 109 [2022-07-19 23:20:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:34,887 INFO L495 AbstractCegarLoop]: Abstraction has 18346 states and 27233 transitions. [2022-07-19 23:20:34,887 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) [2022-07-19 23:20:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 18346 states and 27233 transitions. [2022-07-19 23:20:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 23:20:34,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:34,898 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] [2022-07-19 23:20:34,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 23:20:34,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash 75172880, now seen corresponding path program 1 times [2022-07-19 23:20:34,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:34,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612482510] [2022-07-19 23:20:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:34,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:20:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:20:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:35,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:20:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:35,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 23:20:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:20:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 23:20:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:35,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:20:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:20:35,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:35,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612482510] [2022-07-19 23:20:35,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612482510] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:20:35,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340534608] [2022-07-19 23:20:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:35,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:20:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:20:35,132 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) [2022-07-19 23:20:35,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:20:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:36,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 3582 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:20:36,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:20:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:20:36,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:20:36,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340534608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:36,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:20:36,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2022-07-19 23:20:36,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563280367] [2022-07-19 23:20:36,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:36,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:20:36,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:36,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:20:36,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:20:36,236 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) [2022-07-19 23:20:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:36,887 INFO L93 Difference]: Finished difference Result 36717 states and 54571 transitions. [2022-07-19 23:20:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:20:36,888 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 [2022-07-19 23:20:36,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:36,966 INFO L225 Difference]: With dead ends: 36717 [2022-07-19 23:20:36,967 INFO L226 Difference]: Without dead ends: 18374 [2022-07-19 23:20:37,022 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 [2022-07-19 23:20:37,023 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 [2022-07-19 23:20:37,023 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] [2022-07-19 23:20:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18374 states. [2022-07-19 23:20:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18374 to 18362. [2022-07-19 23:20:37,862 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) [2022-07-19 23:20:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18362 states to 18362 states and 27307 transitions. [2022-07-19 23:20:37,926 INFO L78 Accepts]: Start accepts. Automaton has 18362 states and 27307 transitions. Word has length 109 [2022-07-19 23:20:37,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:37,926 INFO L495 AbstractCegarLoop]: Abstraction has 18362 states and 27307 transitions. [2022-07-19 23:20:37,926 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) [2022-07-19 23:20:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 18362 states and 27307 transitions. [2022-07-19 23:20:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 23:20:37,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:37,936 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] [2022-07-19 23:20:37,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 23:20:38,151 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 [2022-07-19 23:20:38,152 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1707976879, now seen corresponding path program 1 times [2022-07-19 23:20:38,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:38,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40989141] [2022-07-19 23:20:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:38,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:38,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:20:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:20:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:20:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 23:20:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:20:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:38,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 23:20:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:38,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:20:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:20:38,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:38,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40989141] [2022-07-19 23:20:38,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40989141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:38,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:38,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:20:38,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127427448] [2022-07-19 23:20:38,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:38,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:20:38,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:20:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:20:38,349 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) [2022-07-19 23:20:42,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:20:44,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:20:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:51,307 INFO L93 Difference]: Finished difference Result 18862 states and 28079 transitions. [2022-07-19 23:20:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:20:51,308 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 [2022-07-19 23:20:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:51,310 INFO L225 Difference]: With dead ends: 18862 [2022-07-19 23:20:51,310 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 23:20:51,346 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 [2022-07-19 23:20:51,347 INFO L413 NwaCegarLoop]: 5093 mSDtfsCounter, 4541 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 5690 mSolverCounterSat, 3834 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 8454 SdHoareTripleChecker+Invalid, 9525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3834 IncrementalHoareTripleChecker+Valid, 5690 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:51,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 8454 Invalid, 9525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3834 Valid, 5690 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2022-07-19 23:20:51,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 23:20:51,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 23:20:51,348 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) [2022-07-19 23:20:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 23:20:51,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2022-07-19 23:20:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:51,356 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 23:20:51,357 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) [2022-07-19 23:20:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 23:20:51,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 23:20:51,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 23:20:51,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 23:20:51,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.