./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 15:19:12,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 15:19:12,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 15:19:13,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 15:19:13,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 15:19:13,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 15:19:13,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 15:19:13,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 15:19:13,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 15:19:13,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 15:19:13,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 15:19:13,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 15:19:13,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 15:19:13,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 15:19:13,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 15:19:13,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 15:19:13,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 15:19:13,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 15:19:13,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 15:19:13,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 15:19:13,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 15:19:13,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 15:19:13,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 15:19:13,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 15:19:13,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 15:19:13,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 15:19:13,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 15:19:13,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 15:19:13,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 15:19:13,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 15:19:13,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 15:19:13,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 15:19:13,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 15:19:13,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 15:19:13,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 15:19:13,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 15:19:13,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 15:19:13,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 15:19:13,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 15:19:13,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 15:19:13,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 15:19:13,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 15:19:13,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 15:19:13,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 15:19:13,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 15:19:13,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 15:19:13,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 15:19:13,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 15:19:13,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 15:19:13,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 15:19:13,072 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 15:19:13,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 15:19:13,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 15:19:13,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 15:19:13,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 15:19:13,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 15:19:13,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 15:19:13,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 15:19:13,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 15:19:13,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 15:19:13,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 15:19:13,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 15:19:13,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 15:19:13,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:19:13,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 15:19:13,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 15:19:13,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 15:19:13,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 15:19:13,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 15:19:13,076 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 15:19:13,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 15:19:13,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 15:19:13,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 15:19:13,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 [2021-12-22 15:19:13,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 15:19:13,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 15:19:13,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 15:19:13,328 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 15:19:13,328 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 15:19:13,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2021-12-22 15:19:13,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dc6a9317/1225a7ebbbeb4d4ca1c4ea81bcbc173b/FLAGc0d2a42d3 [2021-12-22 15:19:13,951 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 15:19:13,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2021-12-22 15:19:13,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dc6a9317/1225a7ebbbeb4d4ca1c4ea81bcbc173b/FLAGc0d2a42d3 [2021-12-22 15:19:14,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dc6a9317/1225a7ebbbeb4d4ca1c4ea81bcbc173b [2021-12-22 15:19:14,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 15:19:14,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 15:19:14,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 15:19:14,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 15:19:14,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 15:19:14,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:19:14" (1/1) ... [2021-12-22 15:19:14,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f69b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:14, skipping insertion in model container [2021-12-22 15:19:14,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:19:14" (1/1) ... [2021-12-22 15:19:14,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 15:19:14,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 15:19:16,042 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2021-12-22 15:19:16,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:19:16,123 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 15:19:16,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2021-12-22 15:19:16,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:19:16,617 INFO L208 MainTranslator]: Completed translation [2021-12-22 15:19:16,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16 WrapperNode [2021-12-22 15:19:16,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 15:19:16,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 15:19:16,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 15:19:16,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 15:19:16,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:16,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:16,849 INFO L137 Inliner]: procedures = 180, calls = 1491, calls flagged for inlining = 71, calls inlined = 66, statements flattened = 3754 [2021-12-22 15:19:16,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 15:19:16,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 15:19:16,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 15:19:16,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 15:19:16,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:16,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:16,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:16,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:17,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:17,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:17,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:17,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 15:19:17,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 15:19:17,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 15:19:17,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 15:19:17,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (1/1) ... [2021-12-22 15:19:17,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:19:17,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:19:17,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 15:19:17,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 15:19:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 15:19:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 15:19:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure digi_disconnect [2021-12-22 15:19:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_disconnect [2021-12-22 15:19:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 15:19:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure digi_break_ctl [2021-12-22 15:19:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_break_ctl [2021-12-22 15:19:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 15:19:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 15:19:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure cond_wait_interruptible_timeout_irqrestore [2021-12-22 15:19:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure cond_wait_interruptible_timeout_irqrestore [2021-12-22 15:19:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 15:19:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 15:19:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 15:19:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 15:19:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 15:19:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_throttle [2021-12-22 15:19:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_throttle [2021-12-22 15:19:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2021-12-22 15:19:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2021-12-22 15:19:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 15:19:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 15:19:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-22 15:19:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-22 15:19:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-22 15:19:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-22 15:19:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup [2021-12-22 15:19:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup [2021-12-22 15:19:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 15:19:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 15:19:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2021-12-22 15:19:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2021-12-22 15:19:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure digi_open [2021-12-22 15:19:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_open [2021-12-22 15:19:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-22 15:19:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-22 15:19:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-22 15:19:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-22 15:19:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-22 15:19:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-22 15:19:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 15:19:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 15:19:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-22 15:19:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-22 15:19:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_bulk_callback [2021-12-22 15:19:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_bulk_callback [2021-12-22 15:19:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 15:19:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 15:19:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 15:19:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_bulk_callback [2021-12-22 15:19:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_bulk_callback [2021-12-22 15:19:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 15:19:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 15:19:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write [2021-12-22 15:19:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write [2021-12-22 15:19:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_termios [2021-12-22 15:19:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_termios [2021-12-22 15:19:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure digi_wakeup_write_lock [2021-12-22 15:19:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_wakeup_write_lock [2021-12-22 15:19:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_room [2021-12-22 15:19:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_room [2021-12-22 15:19:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 15:19:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 15:19:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 15:19:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 15:19:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure digi_close [2021-12-22 15:19:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_close [2021-12-22 15:19:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmset [2021-12-22 15:19:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmset [2021-12-22 15:19:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmget [2021-12-22 15:19:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmget [2021-12-22 15:19:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 15:19:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-22 15:19:17,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-22 15:19:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 15:19:17,209 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 15:19:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_modem_signals [2021-12-22 15:19:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_modem_signals [2021-12-22 15:19:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2021-12-22 15:19:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2021-12-22 15:19:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 15:19:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_probe [2021-12-22 15:19:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_probe [2021-12-22 15:19:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 15:19:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 15:19:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure digi_release [2021-12-22 15:19:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_release [2021-12-22 15:19:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_inb_command [2021-12-22 15:19:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_inb_command [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_oob_command [2021-12-22 15:19:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_oob_command [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-22 15:19:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_init [2021-12-22 15:19:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_init [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-22 15:19:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-22 15:19:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 15:19:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_unthrottle [2021-12-22 15:19:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_unthrottle [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 15:19:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-22 15:19:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure digi_dtr_rts [2021-12-22 15:19:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_dtr_rts [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure digi_chars_in_buffer [2021-12-22 15:19:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_chars_in_buffer [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 15:19:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-22 15:19:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-22 15:19:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-22 15:19:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_remove [2021-12-22 15:19:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_remove [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-22 15:19:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-22 15:19:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 15:19:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-22 15:19:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-22 15:19:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-22 15:19:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-22 15:19:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 15:19:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-22 15:19:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-22 15:19:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 15:19:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 15:19:17,768 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 15:19:17,771 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 15:19:18,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 15:19:26,761 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 15:19:26,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 15:19:26,787 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 15:19:26,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:19:26 BoogieIcfgContainer [2021-12-22 15:19:26,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 15:19:26,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 15:19:26,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 15:19:26,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 15:19:26,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:19:14" (1/3) ... [2021-12-22 15:19:26,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3882addc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:19:26, skipping insertion in model container [2021-12-22 15:19:26,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:16" (2/3) ... [2021-12-22 15:19:26,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3882addc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:19:26, skipping insertion in model container [2021-12-22 15:19:26,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:19:26" (3/3) ... [2021-12-22 15:19:26,800 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2021-12-22 15:19:26,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 15:19:26,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 15:19:26,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 15:19:26,850 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 15:19:26,850 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 15:19:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 1283 states, 893 states have (on average 1.4076147816349385) internal successors, (1257), 911 states have internal predecessors, (1257), 329 states have call successors, (329), 60 states have call predecessors, (329), 59 states have return successors, (324), 320 states have call predecessors, (324), 324 states have call successors, (324) [2021-12-22 15:19:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 15:19:26,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:26,900 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:19:26,901 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1133325010, now seen corresponding path program 1 times [2021-12-22 15:19:26,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:26,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125513973] [2021-12-22 15:19:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:26,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:19:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:19:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:19:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:19:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 15:19:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 15:19:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 15:19:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 15:19:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 15:19:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 15:19:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 15:19:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 15:19:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-22 15:19:27,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:27,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125513973] [2021-12-22 15:19:27,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125513973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:27,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:27,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 15:19:27,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439559415] [2021-12-22 15:19:27,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:27,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 15:19:27,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 15:19:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 15:19:27,618 INFO L87 Difference]: Start difference. First operand has 1283 states, 893 states have (on average 1.4076147816349385) internal successors, (1257), 911 states have internal predecessors, (1257), 329 states have call successors, (329), 60 states have call predecessors, (329), 59 states have return successors, (324), 320 states have call predecessors, (324), 324 states have call successors, (324) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-22 15:19:29,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:31,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:33,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:39,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:41,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:43,365 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 [] [2021-12-22 15:19:43,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:19:43,559 INFO L93 Difference]: Finished difference Result 2628 states and 4043 transitions. [2021-12-22 15:19:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 15:19:43,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2021-12-22 15:19:43,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:19:43,584 INFO L225 Difference]: With dead ends: 2628 [2021-12-22 15:19:43,588 INFO L226 Difference]: Without dead ends: 1335 [2021-12-22 15:19:43,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:19:43,602 INFO L933 BasicCegarLoop]: 1790 mSDtfsCounter, 398 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 741 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 4772 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-12-22 15:19:43,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 4772 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 1231 Invalid, 6 Unknown, 0 Unchecked, 15.7s Time] [2021-12-22 15:19:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-12-22 15:19:43,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1268. [2021-12-22 15:19:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 885 states have (on average 1.4) internal successors, (1239), 896 states have internal predecessors, (1239), 324 states have call successors, (324), 59 states have call predecessors, (324), 58 states have return successors, (323), 319 states have call predecessors, (323), 323 states have call successors, (323) [2021-12-22 15:19:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1886 transitions. [2021-12-22 15:19:43,726 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1886 transitions. Word has length 151 [2021-12-22 15:19:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:19:43,731 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1886 transitions. [2021-12-22 15:19:43,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-22 15:19:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1886 transitions. [2021-12-22 15:19:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 15:19:43,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:43,740 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:19:43,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 15:19:43,740 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1777342426, now seen corresponding path program 1 times [2021-12-22 15:19:43,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:43,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831822167] [2021-12-22 15:19:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:43,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:19:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:43,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:19:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:19:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:19:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 15:19:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 15:19:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 15:19:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 15:19:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 15:19:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 15:19:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 15:19:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 15:19:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-22 15:19:44,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:44,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831822167] [2021-12-22 15:19:44,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831822167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:44,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:44,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:19:44,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071114667] [2021-12-22 15:19:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:44,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:19:44,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:44,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:19:44,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:19:44,124 INFO L87 Difference]: Start difference. First operand 1268 states and 1886 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-22 15:19:46,145 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 [] [2021-12-22 15:19:48,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:54,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:56,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:00,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:02,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:20:02,214 INFO L93 Difference]: Finished difference Result 3665 states and 5445 transitions. [2021-12-22 15:20:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:20:02,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 151 [2021-12-22 15:20:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:20:02,227 INFO L225 Difference]: With dead ends: 3665 [2021-12-22 15:20:02,227 INFO L226 Difference]: Without dead ends: 2432 [2021-12-22 15:20:02,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:20:02,234 INFO L933 BasicCegarLoop]: 1958 mSDtfsCounter, 2092 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 1515 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 6482 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1515 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-12-22 15:20:02,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2274 Valid, 6482 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1515 Valid, 2203 Invalid, 6 Unknown, 0 Unchecked, 17.9s Time] [2021-12-22 15:20:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-12-22 15:20:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2299. [2021-12-22 15:20:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1609 states have (on average 1.3927905531385953) internal successors, (2241), 1631 states have internal predecessors, (2241), 574 states have call successors, (574), 116 states have call predecessors, (574), 115 states have return successors, (573), 565 states have call predecessors, (573), 573 states have call successors, (573) [2021-12-22 15:20:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3388 transitions. [2021-12-22 15:20:02,313 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3388 transitions. Word has length 151 [2021-12-22 15:20:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:20:02,314 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 3388 transitions. [2021-12-22 15:20:02,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-22 15:20:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3388 transitions. [2021-12-22 15:20:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 15:20:02,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:20:02,318 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:20:02,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 15:20:02,318 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:20:02,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:20:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1377764580, now seen corresponding path program 1 times [2021-12-22 15:20:02,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:20:02,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872427713] [2021-12-22 15:20:02,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:20:02,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:20:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:20:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:20:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:20:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:20:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:20:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 15:20:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 15:20:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 15:20:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 15:20:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 15:20:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 15:20:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 15:20:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 15:20:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-22 15:20:02,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:20:02,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872427713] [2021-12-22 15:20:02,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872427713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:20:02,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:20:02,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:20:02,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773928488] [2021-12-22 15:20:02,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:20:02,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:20:02,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:20:02,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:20:02,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:20:02,593 INFO L87 Difference]: Start difference. First operand 2299 states and 3388 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-22 15:20:04,616 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 [] [2021-12-22 15:20:11,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:13,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:13,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:20:13,382 INFO L93 Difference]: Finished difference Result 5843 states and 8613 transitions. [2021-12-22 15:20:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:20:13,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 151 [2021-12-22 15:20:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:20:13,398 INFO L225 Difference]: With dead ends: 5843 [2021-12-22 15:20:13,398 INFO L226 Difference]: Without dead ends: 3586 [2021-12-22 15:20:13,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:20:13,410 INFO L933 BasicCegarLoop]: 3044 mSDtfsCounter, 1981 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 1501 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 6224 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1501 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-12-22 15:20:13,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 6224 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1501 Valid, 1483 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2021-12-22 15:20:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-12-22 15:20:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3388. [2021-12-22 15:20:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 2378 states have (on average 1.3881412952060554) internal successors, (3301), 2412 states have internal predecessors, (3301), 831 states have call successors, (831), 179 states have call predecessors, (831), 178 states have return successors, (830), 817 states have call predecessors, (830), 830 states have call successors, (830) [2021-12-22 15:20:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 4962 transitions. [2021-12-22 15:20:13,501 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 4962 transitions. Word has length 151 [2021-12-22 15:20:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:20:13,502 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 4962 transitions. [2021-12-22 15:20:13,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-22 15:20:13,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 4962 transitions. [2021-12-22 15:20:13,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-22 15:20:13,505 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:20:13,505 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 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] [2021-12-22 15:20:13,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 15:20:13,505 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:20:13,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:20:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1107293095, now seen corresponding path program 1 times [2021-12-22 15:20:13,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:20:13,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597119665] [2021-12-22 15:20:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:20:13,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:20:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:20:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:20:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:20:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:20:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:20:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 15:20:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 15:20:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 15:20:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 15:20:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 15:20:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 15:20:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 15:20:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 15:20:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 15:20:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-22 15:20:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-22 15:20:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-22 15:20:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-22 15:20:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-22 15:20:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-22 15:20:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-22 15:20:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:20:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:20:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:20:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2021-12-22 15:20:13,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:20:13,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597119665] [2021-12-22 15:20:13,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597119665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:20:13,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:20:13,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:20:13,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593694723] [2021-12-22 15:20:13,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:20:13,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:20:13,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:20:13,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:20:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:20:13,950 INFO L87 Difference]: Start difference. First operand 3388 states and 4962 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-22 15:20:15,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:17,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:20,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:22,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []