./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 6c24879c 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-?-6c24879 [2022-07-12 12:14:47,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:14:47,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:14:47,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:14:47,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:14:47,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:14:47,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:14:47,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:14:47,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:14:47,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:14:47,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:14:47,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:14:47,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:14:47,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:14:47,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:14:47,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:14:47,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:14:47,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:14:47,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:14:47,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:14:47,488 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:14:47,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:14:47,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:14:47,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:14:47,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:14:47,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:14:47,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:14:47,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:14:47,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:14:47,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:14:47,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:14:47,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:14:47,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:14:47,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:14:47,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:14:47,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:14:47,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:14:47,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:14:47,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:14:47,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:14:47,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:14:47,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:14:47,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:14:47,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:14:47,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:14:47,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:14:47,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:14:47,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:14:47,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:14:47,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:14:47,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:14:47,537 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:14:47,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:14:47,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:14:47,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:14:47,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:14:47,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:14:47,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:14:47,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:14:47,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:14:47,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:14:47,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:14:47,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:14:47,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:14:47,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:14:47,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:14:47,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:14:47,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:14:47,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:14:47,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:14:47,541 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:14:47,542 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:14:47,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:14:47,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 [2022-07-12 12:14:47,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:14:47,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:14:47,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:14:47,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:14:47,813 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:14:47,814 INFO L432 ainManager$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 [2022-07-12 12:14:47,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0ebdaa0/4a653a1fda484900a85805a17dd46461/FLAG630da09a8 [2022-07-12 12:14:48,645 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:14:48,646 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 [2022-07-12 12:14:48,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0ebdaa0/4a653a1fda484900a85805a17dd46461/FLAG630da09a8 [2022-07-12 12:14:48,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0ebdaa0/4a653a1fda484900a85805a17dd46461 [2022-07-12 12:14:48,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:14:48,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:14:48,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:14:48,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:14:48,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:14:48,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:14:48" (1/1) ... [2022-07-12 12:14:48,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55726e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:48, skipping insertion in model container [2022-07-12 12:14:48,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:14:48" (1/1) ... [2022-07-12 12:14:48,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:14:49,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:14:54,114 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] [2022-07-12 12:14:54,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:14:54,464 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:14:55,098 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] [2022-07-12 12:14:55,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:14:55,413 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:14:55,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55 WrapperNode [2022-07-12 12:14:55,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:14:55,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:14:55,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:14:55,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:14:55,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:55,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:55,858 INFO L137 Inliner]: procedures = 395, calls = 4060, calls flagged for inlining = 199, calls inlined = 146, statements flattened = 7353 [2022-07-12 12:14:55,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:14:55,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:14:55,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:14:55,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:14:55,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:55,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:55,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:55,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:56,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:56,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:56,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:56,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:14:56,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:14:56,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:14:56,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:14:56,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (1/1) ... [2022-07-12 12:14:56,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:14:56,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:14:56,634 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) [2022-07-12 12:14:56,655 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 [2022-07-12 12:14:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_wait_until_sent [2022-07-12 12:14:56,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_wait_until_sent [2022-07-12 12:14:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-12 12:14:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-12 12:14:56,673 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-12 12:14:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_start [2022-07-12 12:14:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_start [2022-07-12 12:14:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_txidle [2022-07-12 12:14:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_txidle [2022-07-12 12:14:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2022-07-12 12:14:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2022-07-12 12:14:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:14:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:14:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopback_frame [2022-07-12 12:14:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopback_frame [2022-07-12 12:14:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2022-07-12 12:14:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2022-07-12 12:14:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_receiver [2022-07-12 12:14:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_receiver [2022-07-12 12:14:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_serial_signals [2022-07-12 12:14:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_serial_signals [2022-07-12 12:14:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_trace_block [2022-07-12 12:14:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_trace_block [2022-07-12 12:14:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-07-12 12:14:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-07-12 12:14:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-12 12:14:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-12 12:14:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mgsl_ops_disconnect_2 [2022-07-12 12:14:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mgsl_ops_disconnect_2 [2022-07-12 12:14:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2022-07-12 12:14:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2022-07-12 12:14:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 12:14:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 12:14:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-12 12:14:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2022-07-12 12:14:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2022-07-12 12:14:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure load_next_tx_holding_buffer [2022-07-12 12:14:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure load_next_tx_holding_buffer [2022-07-12 12:14:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 12:14:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 12:14:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tty_port [2022-07-12 12:14:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tty_port [2022-07-12 12:14:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:14:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2022-07-12 12:14:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2022-07-12 12:14:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-12 12:14:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-12 12:14:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-12 12:14:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-12 12:14:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-12 12:14:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-12 12:14:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 12:14:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 12:14:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2022-07-12 12:14:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2022-07-12 12:14:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutDmaReg [2022-07-12 12:14:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutDmaReg [2022-07-12 12:14:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-12 12:14:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-12 12:14:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_cancel_transmit [2022-07-12 12:14:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_cancel_transmit [2022-07-12 12:14:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure usc_load_txfifo [2022-07-12 12:14:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_load_txfifo [2022-07-12 12:14:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-12 12:14:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-12 12:14:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2022-07-12 12:14:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2022-07-12 12:14:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:14:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-12 12:14:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-12 12:14:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-12 12:14:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-12 12:14:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-12 12:14:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-12 12:14:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:14:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:14:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure usc_reset [2022-07-12 12:14:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_reset [2022-07-12 12:14:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_free_frame_memory [2022-07-12 12:14:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_free_frame_memory [2022-07-12 12:14:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InReg [2022-07-12 12:14:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InReg [2022-07-12 12:14:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-07-12 12:14:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-07-12 12:14:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure usc_enable_loopback [2022-07-12 12:14:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_enable_loopback [2022-07-12 12:14:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_load_tx_dma_buffer [2022-07-12 12:14:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_load_tx_dma_buffer [2022-07-12 12:14:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure usc_DmaCmd [2022-07-12 12:14:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_DmaCmd [2022-07-12 12:14:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_buffer [2022-07-12 12:14:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_buffer [2022-07-12 12:14:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-12 12:14:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-12 12:14:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2022-07-12 12:14:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2022-07-12 12:14:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure usc_RTCmd [2022-07-12 12:14:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_RTCmd [2022-07-12 12:14:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:14:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_sdlc_mode [2022-07-12 12:14:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_sdlc_mode [2022-07-12 12:14:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_receiver [2022-07-12 12:14:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_receiver [2022-07-12 12:14:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:14:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:14:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 12:14:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-12 12:14:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-12 12:14:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_add_device [2022-07-12 12:14:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_add_device [2022-07-12 12:14:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_unthrottle [2022-07-12 12:14:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_unthrottle [2022-07-12 12:14:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_throttle [2022-07-12 12:14:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_throttle [2022-07-12 12:14:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutReg [2022-07-12 12:14:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutReg [2022-07-12 12:14:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-12 12:14:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-12 12:14:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2022-07-12 12:14:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2022-07-12 12:14:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_set_termios [2022-07-12 12:14:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_set_termios [2022-07-12 12:14:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-12 12:14:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-12 12:14:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-12 12:14:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-12 12:14:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_transmitter [2022-07-12 12:14:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_transmitter [2022-07-12 12:14:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:14:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:14:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-07-12 12:14:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-07-12 12:14:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:14:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:14:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_chars [2022-07-12 12:14:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_chars [2022-07-12 12:14:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-12 12:14:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-12 12:14:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-12 12:14:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-12 12:14:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_send_xchar [2022-07-12 12:14:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_send_xchar [2022-07-12 12:14:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_change_params [2022-07-12 12:14:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_change_params [2022-07-12 12:14:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:14:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:14:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:14:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:14:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure usc_get_serial_signals [2022-07-12 12:14:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_get_serial_signals [2022-07-12 12:14:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_reset_rx_dma_buffers [2022-07-12 12:14:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_reset_rx_dma_buffers [2022-07-12 12:14:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 12:14:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 12:14:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-12 12:14:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-12 12:14:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_transmitter [2022-07-12 12:14:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_transmitter [2022-07-12 12:14:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-12 12:14:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-12 12:14:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2022-07-12 12:14:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2022-07-12 12:14:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 12:14:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 12:14:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_paranoia_check [2022-07-12 12:14:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_paranoia_check [2022-07-12 12:14:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InDmaReg [2022-07-12 12:14:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InDmaReg [2022-07-12 12:14:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:14:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:14:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_active [2022-07-12 12:14:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_active [2022-07-12 12:14:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_stop [2022-07-12 12:14:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_stop [2022-07-12 12:14:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-12 12:14:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-12 12:14:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:14:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_remove_one [2022-07-12 12:14:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_remove_one [2022-07-12 12:14:56,715 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-12 12:14:56,716 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-12 12:14:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_cleanup [2022-07-12 12:14:56,716 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_cleanup [2022-07-12 12:14:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-12 12:14:56,716 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-12 12:14:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-12 12:14:56,717 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-12 12:14:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-07-12 12:14:56,717 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-07-12 12:14:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-12 12:14:56,717 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-12 12:14:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-07-12 12:14:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-07-12 12:14:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_write_room [2022-07-12 12:14:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_write_room [2022-07-12 12:14:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_break [2022-07-12 12:14:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_break [2022-07-12 12:14:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_allocate_device [2022-07-12 12:14:56,719 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_allocate_device [2022-07-12 12:14:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-07-12 12:14:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-07-12 12:14:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_install [2022-07-12 12:14:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_install [2022-07-12 12:14:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2022-07-12 12:14:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2022-07-12 12:14:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_release_resources [2022-07-12 12:14:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_release_resources [2022-07-12 12:14:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-12 12:14:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-12 12:14:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-12 12:14:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-12 12:14:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-12 12:14:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-12 12:14:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_send_done [2022-07-12 12:14:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_send_done [2022-07-12 12:14:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-12 12:14:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-12 12:14:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-07-12 12:14:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-07-12 12:14:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:14:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:14:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_ioctl [2022-07-12 12:14:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_ioctl [2022-07-12 12:14:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-07-12 12:14:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-07-12 12:14:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:14:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:14:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:14:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure msgl_get_icount [2022-07-12 12:14:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure msgl_get_icount [2022-07-12 12:14:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_chars_in_buffer [2022-07-12 12:14:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_chars_in_buffer [2022-07-12 12:14:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-12 12:14:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-12 12:14:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2022-07-12 12:14:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2022-07-12 12:14:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-12 12:14:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-12 12:14:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_put_char [2022-07-12 12:14:56,745 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_put_char [2022-07-12 12:14:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_program_hw [2022-07-12 12:14:56,745 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_program_hw [2022-07-12 12:14:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2022-07-12 12:14:56,746 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2022-07-12 12:14:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_hangup [2022-07-12 12:14:56,747 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_hangup [2022-07-12 12:14:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-12 12:14:56,750 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-12 12:14:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-07-12 12:14:56,750 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-07-12 12:14:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-12 12:14:56,751 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-12 12:14:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:14:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_alloc_frame_memory [2022-07-12 12:14:56,752 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_alloc_frame_memory [2022-07-12 12:14:56,752 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-07-12 12:14:56,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-07-12 12:14:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-07-12 12:14:56,758 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-07-12 12:14:57,961 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:14:57,974 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:15:29,113 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:15:29,144 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:15:29,144 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:15:29,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:15:29 BoogieIcfgContainer [2022-07-12 12:15:29,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:15:29,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:15:29,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:15:29,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:15:29,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:14:48" (1/3) ... [2022-07-12 12:15:29,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc25558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:15:29, skipping insertion in model container [2022-07-12 12:15:29,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:14:55" (2/3) ... [2022-07-12 12:15:29,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc25558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:15:29, skipping insertion in model container [2022-07-12 12:15:29,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:15:29" (3/3) ... [2022-07-12 12:15:29,160 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-07-12 12:15:29,173 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:15:29,174 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:15:29,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:15:29,320 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@76c5dd3f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a92f811 [2022-07-12 12:15:29,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:15:29,335 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) [2022-07-12 12:15:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-12 12:15:29,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:15:29,376 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] [2022-07-12 12:15:29,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:15:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:15:29,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1697268518, now seen corresponding path program 1 times [2022-07-12 12:15:29,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:15:29,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477191910] [2022-07-12 12:15:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:15:29,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:15:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:15:30,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:15:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:15:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:15:30,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:15:30,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477191910] [2022-07-12 12:15:30,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477191910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:15:30,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:15:30,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:15:30,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137517419] [2022-07-12 12:15:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:15:30,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:15:30,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:15:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:15:30,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:15:30,368 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) [2022-07-12 12:15:35,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:15:38,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:15:46,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:15:51,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:15:55,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:15:57,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:16:00,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:16:02,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:16:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:16:08,846 INFO L93 Difference]: Finished difference Result 10056 states and 15715 transitions. [2022-07-12 12:16:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:16:08,848 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 [2022-07-12 12:16:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:16:08,973 INFO L225 Difference]: With dead ends: 10056 [2022-07-12 12:16:08,973 INFO L226 Difference]: Without dead ends: 6794 [2022-07-12 12:16:09,014 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 [2022-07-12 12:16:09,020 INFO L413 NwaCegarLoop]: 5317 mSDtfsCounter, 5899 mSDsluCounter, 3768 mSDsCounter, 0 mSdLazyCounter, 5666 mSolverCounterSat, 2487 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s 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, 37.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:16:09,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6701 Valid, 9085 Invalid, 8161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2487 Valid, 5666 Invalid, 8 Unknown, 0 Unchecked, 37.3s Time] [2022-07-12 12:16:09,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2022-07-12 12:16:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 6444. [2022-07-12 12:16:10,012 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) [2022-07-12 12:16:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 9786 transitions. [2022-07-12 12:16:10,098 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 9786 transitions. Word has length 23 [2022-07-12 12:16:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:16:10,099 INFO L495 AbstractCegarLoop]: Abstraction has 6444 states and 9786 transitions. [2022-07-12 12:16:10,099 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) [2022-07-12 12:16:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 9786 transitions. [2022-07-12 12:16:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-12 12:16:10,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:16:10,118 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] [2022-07-12 12:16:10,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:16:10,119 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:16:10,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:16:10,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2059515394, now seen corresponding path program 1 times [2022-07-12 12:16:10,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:16:10,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971818714] [2022-07-12 12:16:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:16:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:16:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:16:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:16:10,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:16:10,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971818714] [2022-07-12 12:16:10,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971818714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:16:10,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:16:10,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:16:10,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495337920] [2022-07-12 12:16:10,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:16:10,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:16:10,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:16:10,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:16:10,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:16:10,541 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) [2022-07-12 12:16:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:16:11,747 INFO L93 Difference]: Finished difference Result 16377 states and 24758 transitions. [2022-07-12 12:16:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:16:11,748 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 [2022-07-12 12:16:11,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:16:11,934 INFO L225 Difference]: With dead ends: 16377 [2022-07-12 12:16:11,934 INFO L226 Difference]: Without dead ends: 9936 [2022-07-12 12:16:12,037 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 [2022-07-12 12:16:12,042 INFO L413 NwaCegarLoop]: 5669 mSDtfsCounter, 2629 mSDsluCounter, 4645 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:16:12,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 10314 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 12:16:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9936 states. [2022-07-12 12:16:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9936 to 9924. [2022-07-12 12:16:13,082 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) [2022-07-12 12:16:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 14959 transitions. [2022-07-12 12:16:13,152 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 14959 transitions. Word has length 42 [2022-07-12 12:16:13,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:16:13,168 INFO L495 AbstractCegarLoop]: Abstraction has 9924 states and 14959 transitions. [2022-07-12 12:16:13,168 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) [2022-07-12 12:16:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 14959 transitions. [2022-07-12 12:16:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 12:16:13,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:16:13,173 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] [2022-07-12 12:16:13,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:16:13,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:16:13,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:16:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2000340873, now seen corresponding path program 1 times [2022-07-12 12:16:13,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:16:13,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719435358] [2022-07-12 12:16:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:16:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:16:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:16:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:16:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:16:13,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:16:13,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719435358] [2022-07-12 12:16:13,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719435358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:16:13,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:16:13,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:16:13,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26325680] [2022-07-12 12:16:13,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:16:13,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:16:13,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:16:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:16:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:16:13,643 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) [2022-07-12 12:16:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:16:28,398 INFO L93 Difference]: Finished difference Result 21956 states and 33498 transitions. [2022-07-12 12:16:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:16:28,399 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 [2022-07-12 12:16:28,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:16:28,607 INFO L225 Difference]: With dead ends: 21956 [2022-07-12 12:16:28,615 INFO L226 Difference]: Without dead ends: 12035 [2022-07-12 12:16:28,685 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 [2022-07-12 12:16:28,688 INFO L413 NwaCegarLoop]: 5585 mSDtfsCounter, 3125 mSDsluCounter, 7967 mSDsCounter, 0 mSdLazyCounter, 5925 mSolverCounterSat, 1395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3571 SdHoareTripleChecker+Valid, 13552 SdHoareTripleChecker+Invalid, 7320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1395 IncrementalHoareTripleChecker+Valid, 5925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:16:28,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3571 Valid, 13552 Invalid, 7320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1395 Valid, 5925 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-07-12 12:16:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12035 states. [2022-07-12 12:16:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12035 to 9928. [2022-07-12 12:16:29,778 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) [2022-07-12 12:16:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 14963 transitions. [2022-07-12 12:16:29,839 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 14963 transitions. Word has length 47 [2022-07-12 12:16:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:16:29,839 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 14963 transitions. [2022-07-12 12:16:29,840 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) [2022-07-12 12:16:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 14963 transitions. [2022-07-12 12:16:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-12 12:16:29,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:16:29,843 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] [2022-07-12 12:16:29,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:16:29,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:16:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:16:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1312663061, now seen corresponding path program 1 times [2022-07-12 12:16:29,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:16:29,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952104007] [2022-07-12 12:16:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:16:29,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:16:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:16:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:16:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:16:30,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:16:30,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952104007] [2022-07-12 12:16:30,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952104007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:16:30,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:16:30,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:16:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676922269] [2022-07-12 12:16:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:16:30,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:16:30,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:16:30,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:16:30,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:16:30,315 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) [2022-07-12 12:16:37,172 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 [] [2022-07-12 12:16:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:16:41,929 INFO L93 Difference]: Finished difference Result 21045 states and 31941 transitions. [2022-07-12 12:16:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 12:16:41,930 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 [2022-07-12 12:16:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:16:42,002 INFO L225 Difference]: With dead ends: 21045 [2022-07-12 12:16:42,002 INFO L226 Difference]: Without dead ends: 11120 [2022-07-12 12:16:42,053 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 [2022-07-12 12:16:42,054 INFO L413 NwaCegarLoop]: 4851 mSDtfsCounter, 6600 mSDsluCounter, 4631 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 2968 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7024 SdHoareTripleChecker+Valid, 9482 SdHoareTripleChecker+Invalid, 6725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2968 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:16:42,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7024 Valid, 9482 Invalid, 6725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2968 Valid, 3756 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-07-12 12:16:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11120 states. [2022-07-12 12:16:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11120 to 9930. [2022-07-12 12:16:42,672 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) [2022-07-12 12:16:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 14964 transitions. [2022-07-12 12:16:42,723 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 14964 transitions. Word has length 50 [2022-07-12 12:16:42,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:16:42,725 INFO L495 AbstractCegarLoop]: Abstraction has 9930 states and 14964 transitions. [2022-07-12 12:16:42,725 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) [2022-07-12 12:16:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 14964 transitions. [2022-07-12 12:16:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 12:16:42,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:16:42,728 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] [2022-07-12 12:16:42,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:16:42,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:16:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:16:42,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1860967135, now seen corresponding path program 1 times [2022-07-12 12:16:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:16:42,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199265896] [2022-07-12 12:16:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:16:42,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:16:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:16:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:16:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:42,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:16:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:16:42,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:16:42,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199265896] [2022-07-12 12:16:42,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199265896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:16:42,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:16:42,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:16:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649218317] [2022-07-12 12:16:42,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:16:42,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:16:42,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:16:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:16:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:16:42,974 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) [2022-07-12 12:16:46,106 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 [] [2022-07-12 12:16:50,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:16:55,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:16:58,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:00,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:02,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:05,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:07,401 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 [] [2022-07-12 12:17:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:17:10,397 INFO L93 Difference]: Finished difference Result 10634 states and 16215 transitions. [2022-07-12 12:17:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:17:10,398 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 [2022-07-12 12:17:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:17:10,460 INFO L225 Difference]: With dead ends: 10634 [2022-07-12 12:17:10,461 INFO L226 Difference]: Without dead ends: 10631 [2022-07-12 12:17:10,472 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 [2022-07-12 12:17:10,473 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 6243 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 3663 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6747 SdHoareTripleChecker+Valid, 6730 SdHoareTripleChecker+Invalid, 7303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:17:10,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6747 Valid, 6730 Invalid, 7303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3663 Valid, 3633 Invalid, 7 Unknown, 0 Unchecked, 26.9s Time] [2022-07-12 12:17:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10631 states. [2022-07-12 12:17:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10631 to 9929. [2022-07-12 12:17:11,107 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) [2022-07-12 12:17:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9929 states to 9929 states and 14962 transitions. [2022-07-12 12:17:11,156 INFO L78 Accepts]: Start accepts. Automaton has 9929 states and 14962 transitions. Word has length 56 [2022-07-12 12:17:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:17:11,156 INFO L495 AbstractCegarLoop]: Abstraction has 9929 states and 14962 transitions. [2022-07-12 12:17:11,156 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) [2022-07-12 12:17:11,157 INFO L276 IsEmpty]: Start isEmpty. Operand 9929 states and 14962 transitions. [2022-07-12 12:17:11,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 12:17:11,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:17:11,160 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] [2022-07-12 12:17:11,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:17:11,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:17:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:17:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1853828954, now seen corresponding path program 1 times [2022-07-12 12:17:11,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:17:11,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927681534] [2022-07-12 12:17:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:17:11,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:17:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:11,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:17:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:17:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:17:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:17:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:17:11,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927681534] [2022-07-12 12:17:11,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927681534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:17:11,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:17:11,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:17:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071608110] [2022-07-12 12:17:11,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:17:11,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:17:11,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:17:11,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:17:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:17:11,422 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) [2022-07-12 12:17:14,322 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 [] [2022-07-12 12:17:17,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:21,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:24,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:27,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:29,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:31,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:33,908 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 [] [2022-07-12 12:17:36,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:17:36,557 INFO L93 Difference]: Finished difference Result 10633 states and 16213 transitions. [2022-07-12 12:17:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:17:36,558 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 [2022-07-12 12:17:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:17:36,631 INFO L225 Difference]: With dead ends: 10633 [2022-07-12 12:17:36,632 INFO L226 Difference]: Without dead ends: 10630 [2022-07-12 12:17:36,645 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 [2022-07-12 12:17:36,646 INFO L413 NwaCegarLoop]: 4298 mSDtfsCounter, 6258 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 3663 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6762 SdHoareTripleChecker+Valid, 6716 SdHoareTripleChecker+Invalid, 7302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:17:36,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6762 Valid, 6716 Invalid, 7302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3663 Valid, 3633 Invalid, 6 Unknown, 0 Unchecked, 24.6s Time] [2022-07-12 12:17:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2022-07-12 12:17:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 9928. [2022-07-12 12:17:37,182 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) [2022-07-12 12:17:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 14960 transitions. [2022-07-12 12:17:37,320 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 14960 transitions. Word has length 57 [2022-07-12 12:17:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:17:37,321 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 14960 transitions. [2022-07-12 12:17:37,321 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) [2022-07-12 12:17:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 14960 transitions. [2022-07-12 12:17:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-12 12:17:37,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:17:37,326 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] [2022-07-12 12:17:37,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:17:37,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:17:37,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:17:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1632550210, now seen corresponding path program 1 times [2022-07-12 12:17:37,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:17:37,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114718635] [2022-07-12 12:17:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:17:37,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:17:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:17:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:17:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:17:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:17:37,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:17:37,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114718635] [2022-07-12 12:17:37,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114718635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:17:37,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:17:37,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:17:37,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505905957] [2022-07-12 12:17:37,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:17:37,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:17:37,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:17:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:17:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:17:37,542 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) [2022-07-12 12:17:40,628 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 [] [2022-07-12 12:17:45,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:50,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:53,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:56,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:17:58,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:18:01,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:18:03,452 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 [] [2022-07-12 12:18:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:18:07,510 INFO L93 Difference]: Finished difference Result 10632 states and 16211 transitions. [2022-07-12 12:18:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:18:07,511 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 [2022-07-12 12:18:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:18:07,612 INFO L225 Difference]: With dead ends: 10632 [2022-07-12 12:18:07,627 INFO L226 Difference]: Without dead ends: 10629 [2022-07-12 12:18:07,634 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 [2022-07-12 12:18:07,646 INFO L413 NwaCegarLoop]: 4308 mSDtfsCounter, 6243 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 3642 mSolverCounterSat, 3661 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6741 SdHoareTripleChecker+Valid, 6725 SdHoareTripleChecker+Invalid, 7311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3661 IncrementalHoareTripleChecker+Valid, 3642 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:18:07,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6741 Valid, 6725 Invalid, 7311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3661 Valid, 3642 Invalid, 8 Unknown, 0 Unchecked, 29.3s Time] [2022-07-12 12:18:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10629 states. [2022-07-12 12:18:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10629 to 9927. [2022-07-12 12:18:08,448 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) [2022-07-12 12:18:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9927 states to 9927 states and 14958 transitions. [2022-07-12 12:18:08,552 INFO L78 Accepts]: Start accepts. Automaton has 9927 states and 14958 transitions. Word has length 58 [2022-07-12 12:18:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:18:08,553 INFO L495 AbstractCegarLoop]: Abstraction has 9927 states and 14958 transitions. [2022-07-12 12:18:08,553 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) [2022-07-12 12:18:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 9927 states and 14958 transitions. [2022-07-12 12:18:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 12:18:08,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:18:08,573 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] [2022-07-12 12:18:08,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:18:08,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:18:08,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:18:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash -932118691, now seen corresponding path program 1 times [2022-07-12 12:18:08,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:18:08,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728906294] [2022-07-12 12:18:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:18:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:18:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:18:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:18:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:18:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:18:08,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:18:08,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728906294] [2022-07-12 12:18:08,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728906294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:18:08,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:18:08,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:18:08,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567976355] [2022-07-12 12:18:08,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:18:08,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:18:08,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:18:08,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:18:08,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:18:08,964 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) [2022-07-12 12:18:12,397 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 [] [2022-07-12 12:18:17,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:18:22,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:18:25,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:18:28,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:18:30,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:18:33,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:18:35,422 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 [] [2022-07-12 12:18:42,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:18:42,297 INFO L93 Difference]: Finished difference Result 12477 states and 18937 transitions. [2022-07-12 12:18:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:18:42,298 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 [2022-07-12 12:18:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:18:42,481 INFO L225 Difference]: With dead ends: 12477 [2022-07-12 12:18:42,482 INFO L226 Difference]: Without dead ends: 12393 [2022-07-12 12:18:42,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:18:42,523 INFO L413 NwaCegarLoop]: 4355 mSDtfsCounter, 7194 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 5433 mSolverCounterSat, 4388 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7846 SdHoareTripleChecker+Valid, 6845 SdHoareTripleChecker+Invalid, 9829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4388 IncrementalHoareTripleChecker+Valid, 5433 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:18:42,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7846 Valid, 6845 Invalid, 9829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4388 Valid, 5433 Invalid, 8 Unknown, 0 Unchecked, 32.5s Time] [2022-07-12 12:18:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12393 states. [2022-07-12 12:18:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12393 to 11617. [2022-07-12 12:18:44,016 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) [2022-07-12 12:18:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11617 states to 11617 states and 17470 transitions. [2022-07-12 12:18:44,204 INFO L78 Accepts]: Start accepts. Automaton has 11617 states and 17470 transitions. Word has length 59 [2022-07-12 12:18:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:18:44,206 INFO L495 AbstractCegarLoop]: Abstraction has 11617 states and 17470 transitions. [2022-07-12 12:18:44,206 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) [2022-07-12 12:18:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand 11617 states and 17470 transitions. [2022-07-12 12:18:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 12:18:44,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:18:44,233 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] [2022-07-12 12:18:44,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:18:44,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:18:44,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:18:44,234 INFO L85 PathProgramCache]: Analyzing trace with hash 143235578, now seen corresponding path program 1 times [2022-07-12 12:18:44,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:18:44,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275962128] [2022-07-12 12:18:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:18:44,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:18:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:18:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:18:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 12:18:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 12:18:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:44,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 12:18:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 12:18:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:44,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:18:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:18:44,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:18:44,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275962128] [2022-07-12 12:18:44,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275962128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:18:44,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:18:44,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:18:44,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535882209] [2022-07-12 12:18:44,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:18:44,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:18:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:18:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:18:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:18:44,795 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) [2022-07-12 12:18:51,733 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 [] [2022-07-12 12:18:53,893 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 [] [2022-07-12 12:19:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:19:09,014 INFO L93 Difference]: Finished difference Result 30545 states and 46074 transitions. [2022-07-12 12:19:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:19:09,023 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 [2022-07-12 12:19:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:19:09,242 INFO L225 Difference]: With dead ends: 30545 [2022-07-12 12:19:09,255 INFO L226 Difference]: Without dead ends: 18931 [2022-07-12 12:19:09,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:19:09,405 INFO L413 NwaCegarLoop]: 6282 mSDtfsCounter, 8266 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 7509 mSolverCounterSat, 6009 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8612 SdHoareTripleChecker+Valid, 9965 SdHoareTripleChecker+Invalid, 13520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6009 IncrementalHoareTripleChecker+Valid, 7509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:19:09,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8612 Valid, 9965 Invalid, 13520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6009 Valid, 7509 Invalid, 2 Unknown, 0 Unchecked, 22.7s Time] [2022-07-12 12:19:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18931 states. [2022-07-12 12:19:11,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18931 to 18426. [2022-07-12 12:19:11,508 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) [2022-07-12 12:19:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18426 states to 18426 states and 27639 transitions. [2022-07-12 12:19:11,759 INFO L78 Accepts]: Start accepts. Automaton has 18426 states and 27639 transitions. Word has length 112 [2022-07-12 12:19:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:19:11,767 INFO L495 AbstractCegarLoop]: Abstraction has 18426 states and 27639 transitions. [2022-07-12 12:19:11,767 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) [2022-07-12 12:19:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 18426 states and 27639 transitions. [2022-07-12 12:19:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 12:19:11,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:19:11,810 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] [2022-07-12 12:19:11,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 12:19:11,811 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:19:11,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:19:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash -371106096, now seen corresponding path program 1 times [2022-07-12 12:19:11,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:19:11,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271457873] [2022-07-12 12:19:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:19:11,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:19:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:12,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:19:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:19:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:19:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 12:19:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:12,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 12:19:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:19:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:19:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 12:19:12,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:19:12,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271457873] [2022-07-12 12:19:12,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271457873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:19:12,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:19:12,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:19:12,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619199176] [2022-07-12 12:19:12,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:19:12,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:19:12,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:19:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:19:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:19:12,329 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) [2022-07-12 12:19:16,741 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 []