./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 ae007674 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-ae00767 [2021-12-28 04:37:22,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:37:22,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:37:22,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:37:22,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:37:22,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:37:22,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:37:22,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:37:22,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:37:22,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:37:22,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:37:22,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:37:22,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:37:22,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:37:22,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:37:22,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:37:22,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:37:22,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:37:22,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:37:22,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:37:22,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:37:22,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:37:22,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:37:22,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:37:22,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:37:22,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:37:22,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:37:22,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:37:22,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:37:22,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:37:22,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:37:22,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:37:22,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:37:22,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:37:22,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:37:22,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:37:22,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:37:22,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:37:22,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:37:22,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:37:22,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:37:22,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:37:22,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:37:22,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:37:22,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:37:22,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:37:22,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:37:22,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:37:22,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:37:22,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:37:22,423 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:37:22,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:37:22,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:37:22,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:37:22,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:37:22,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:37:22,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:37:22,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:37:22,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:37:22,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:37:22,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:37:22,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:37:22,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:37:22,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:37:22,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:37:22,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:37:22,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:37:22,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:37:22,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:37:22,427 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:37:22,427 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:37:22,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:37:22,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 [2021-12-28 04:37:22,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:37:22,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:37:22,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:37:22,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:37:22,728 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:37:22,730 INFO L432 ainManager$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 [2021-12-28 04:37:22,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3436da7/abec8edd3eb348d58112674603060206/FLAGdc1b4ed67 [2021-12-28 04:37:23,442 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:37:23,442 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 [2021-12-28 04:37:23,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3436da7/abec8edd3eb348d58112674603060206/FLAGdc1b4ed67 [2021-12-28 04:37:23,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3436da7/abec8edd3eb348d58112674603060206 [2021-12-28 04:37:23,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:37:23,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:37:23,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:37:23,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:37:23,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:37:23,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:37:23" (1/1) ... [2021-12-28 04:37:23,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209e9c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:23, skipping insertion in model container [2021-12-28 04:37:23,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:37:23" (1/1) ... [2021-12-28 04:37:23,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:37:23,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:37:24,898 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] [2021-12-28 04:37:24,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:37:24,959 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:37:25,254 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] [2021-12-28 04:37:25,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:37:25,303 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:37:25,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25 WrapperNode [2021-12-28 04:37:25,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:37:25,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:37:25,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:37:25,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:37:25,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,522 INFO L137 Inliner]: procedures = 180, calls = 1491, calls flagged for inlining = 71, calls inlined = 66, statements flattened = 3754 [2021-12-28 04:37:25,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:37:25,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:37:25,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:37:25,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:37:25,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:37:25,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:37:25,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:37:25,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:37:25,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (1/1) ... [2021-12-28 04:37:25,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:37:25,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:37:25,831 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) [2021-12-28 04:37:25,833 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 [2021-12-28 04:37:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 04:37:25,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 04:37:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure digi_disconnect [2021-12-28 04:37:25,869 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_disconnect [2021-12-28 04:37:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:37:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure digi_break_ctl [2021-12-28 04:37:25,869 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_break_ctl [2021-12-28 04:37:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:37:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:37:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure cond_wait_interruptible_timeout_irqrestore [2021-12-28 04:37:25,870 INFO L138 BoogieDeclarations]: Found implementation of procedure cond_wait_interruptible_timeout_irqrestore [2021-12-28 04:37:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:37:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:37:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:37:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:37:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:37:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_throttle [2021-12-28 04:37:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_throttle [2021-12-28 04:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2021-12-28 04:37:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2021-12-28 04:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 04:37:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 04:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 04:37:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 04:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-28 04:37:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-28 04:37:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup [2021-12-28 04:37:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup [2021-12-28 04:37:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:37:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:37:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2021-12-28 04:37:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2021-12-28 04:37:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure digi_open [2021-12-28 04:37:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_open [2021-12-28 04:37:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-28 04:37:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-28 04:37:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-28 04:37:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-28 04:37:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-28 04:37:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-28 04:37:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:37:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:37:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-28 04:37:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-28 04:37:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_bulk_callback [2021-12-28 04:37:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_bulk_callback [2021-12-28 04:37:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:37:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:37:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:37:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_bulk_callback [2021-12-28 04:37:25,879 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_bulk_callback [2021-12-28 04:37:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:37:25,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:37:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write [2021-12-28 04:37:25,879 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write [2021-12-28 04:37:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_termios [2021-12-28 04:37:25,880 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_termios [2021-12-28 04:37:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure digi_wakeup_write_lock [2021-12-28 04:37:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_wakeup_write_lock [2021-12-28 04:37:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_room [2021-12-28 04:37:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_room [2021-12-28 04:37:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:37:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:37:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:37:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:37:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure digi_close [2021-12-28 04:37:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_close [2021-12-28 04:37:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmset [2021-12-28 04:37:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmset [2021-12-28 04:37:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmget [2021-12-28 04:37:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmget [2021-12-28 04:37:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:37:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-28 04:37:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-28 04:37:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 04:37:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 04:37:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_modem_signals [2021-12-28 04:37:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_modem_signals [2021-12-28 04:37:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2021-12-28 04:37:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2021-12-28 04:37:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:37:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_probe [2021-12-28 04:37:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_probe [2021-12-28 04:37:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:37:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:37:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure digi_release [2021-12-28 04:37:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_release [2021-12-28 04:37:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 04:37:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_inb_command [2021-12-28 04:37:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_inb_command [2021-12-28 04:37:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_oob_command [2021-12-28 04:37:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_oob_command [2021-12-28 04:37:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:37:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-28 04:37:25,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-28 04:37:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_init [2021-12-28 04:37:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_init [2021-12-28 04:37:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-28 04:37:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-28 04:37:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-28 04:37:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-28 04:37:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:37:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:37:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:37:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_unthrottle [2021-12-28 04:37:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_unthrottle [2021-12-28 04:37:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:37:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-28 04:37:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-28 04:37:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure digi_dtr_rts [2021-12-28 04:37:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_dtr_rts [2021-12-28 04:37:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure digi_chars_in_buffer [2021-12-28 04:37:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_chars_in_buffer [2021-12-28 04:37:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 04:37:25,891 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 04:37:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-28 04:37:25,891 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-28 04:37:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-28 04:37:25,892 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-28 04:37:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-28 04:37:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-28 04:37:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_remove [2021-12-28 04:37:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_remove [2021-12-28 04:37:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-28 04:37:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-28 04:37:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-28 04:37:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-28 04:37:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:37:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-28 04:37:25,902 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-28 04:37:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-28 04:37:25,902 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-28 04:37:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:37:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-28 04:37:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-28 04:37:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:37:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:37:26,416 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:37:26,418 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:37:26,593 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:37:35,262 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:37:35,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:37:35,275 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:37:35,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:37:35 BoogieIcfgContainer [2021-12-28 04:37:35,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:37:35,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:37:35,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:37:35,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:37:35,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:37:23" (1/3) ... [2021-12-28 04:37:35,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391f0979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:37:35, skipping insertion in model container [2021-12-28 04:37:35,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:25" (2/3) ... [2021-12-28 04:37:35,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391f0979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:37:35, skipping insertion in model container [2021-12-28 04:37:35,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:37:35" (3/3) ... [2021-12-28 04:37:35,286 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2021-12-28 04:37:35,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:37:35,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:37:35,337 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:37:35,342 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 [2021-12-28 04:37:35,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:37:35,393 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) [2021-12-28 04:37:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 04:37:35,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:37:35,432 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] [2021-12-28 04:37:35,432 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:37:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:37:35,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1133325010, now seen corresponding path program 1 times [2021-12-28 04:37:35,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:37:35,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405296156] [2021-12-28 04:37:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:37:35,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:37:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:37:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:37:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:37:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:37:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:37:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:37:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:37:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:37:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 04:37:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:37:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 04:37:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 04:37:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 04:37:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-28 04:37:36,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:37:36,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405296156] [2021-12-28 04:37:36,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405296156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:37:36,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:37:36,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:37:36,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983867991] [2021-12-28 04:37:36,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:37:36,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:37:36,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:37:36,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:37:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:37:36,117 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) [2021-12-28 04:37:38,154 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 [] [2021-12-28 04:37:40,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:42,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:49,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:51,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:53,042 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 [] [2021-12-28 04:37:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:37:53,280 INFO L93 Difference]: Finished difference Result 2628 states and 4043 transitions. [2021-12-28 04:37:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:37:53,282 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 [2021-12-28 04:37:53,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:37:53,309 INFO L225 Difference]: With dead ends: 2628 [2021-12-28 04:37:53,309 INFO L226 Difference]: Without dead ends: 1335 [2021-12-28 04:37:53,321 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 [2021-12-28 04:37:53,325 INFO L933 BasicCegarLoop]: 1791 mSDtfsCounter, 398 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 741 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 4776 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-12-28 04:37:53,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 4776 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 1231 Invalid, 6 Unknown, 0 Unchecked, 16.9s Time] [2021-12-28 04:37:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-12-28 04:37:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1268. [2021-12-28 04:37:53,434 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) [2021-12-28 04:37:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1886 transitions. [2021-12-28 04:37:53,443 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1886 transitions. Word has length 151 [2021-12-28 04:37:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:37:53,446 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1886 transitions. [2021-12-28 04:37:53,446 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) [2021-12-28 04:37:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1886 transitions. [2021-12-28 04:37:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 04:37:53,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:37:53,455 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] [2021-12-28 04:37:53,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:37:53,455 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:37:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:37:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1777342426, now seen corresponding path program 1 times [2021-12-28 04:37:53,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:37:53,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963160506] [2021-12-28 04:37:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:37:53,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:37:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:37:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:37:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:37:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:37:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:37:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:37:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:37:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:37:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 04:37:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:37:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 04:37:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 04:37:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 04:37:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-28 04:37:53,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:37:53,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963160506] [2021-12-28 04:37:53,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963160506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:37:53,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:37:53,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:37:53,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617199785] [2021-12-28 04:37:53,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:37:53,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:37:53,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:37:53,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:37:53,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:37:53,853 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) [2021-12-28 04:37:55,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:57,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:03,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:05,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:09,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:09,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:38:09,339 INFO L93 Difference]: Finished difference Result 3665 states and 5445 transitions. [2021-12-28 04:38:09,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:38:09,339 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 [2021-12-28 04:38:09,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:38:09,350 INFO L225 Difference]: With dead ends: 3665 [2021-12-28 04:38:09,350 INFO L226 Difference]: Without dead ends: 2432 [2021-12-28 04:38:09,355 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 [2021-12-28 04:38:09,356 INFO L933 BasicCegarLoop]: 1957 mSDtfsCounter, 2092 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 1515 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 6306 SdHoareTripleChecker+Invalid, 3895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1515 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:38:09,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2275 Valid, 6306 Invalid, 3895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1515 Valid, 2377 Invalid, 3 Unknown, 0 Unchecked, 15.2s Time] [2021-12-28 04:38:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-12-28 04:38:09,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2299. [2021-12-28 04:38:09,415 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) [2021-12-28 04:38:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3388 transitions. [2021-12-28 04:38:09,425 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3388 transitions. Word has length 151 [2021-12-28 04:38:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:38:09,426 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 3388 transitions. [2021-12-28 04:38:09,426 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) [2021-12-28 04:38:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3388 transitions. [2021-12-28 04:38:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 04:38:09,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:38:09,428 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] [2021-12-28 04:38:09,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:38:09,429 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:38:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:38:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1377764580, now seen corresponding path program 1 times [2021-12-28 04:38:09,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:38:09,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917355206] [2021-12-28 04:38:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:38:09,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:38:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:38:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:38:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:38:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:38:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:38:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:38:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:38:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:38:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 04:38:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:38:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 04:38:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 04:38:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 04:38:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-28 04:38:09,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:38:09,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917355206] [2021-12-28 04:38:09,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917355206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:38:09,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:38:09,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:38:09,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865287786] [2021-12-28 04:38:09,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:38:09,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:38:09,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:38:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:38:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:38:09,771 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) [2021-12-28 04:38:11,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:18,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:20,166 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 [] [2021-12-28 04:38:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:38:20,300 INFO L93 Difference]: Finished difference Result 5843 states and 8613 transitions. [2021-12-28 04:38:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:38:20,300 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 [2021-12-28 04:38:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:38:20,315 INFO L225 Difference]: With dead ends: 5843 [2021-12-28 04:38:20,315 INFO L226 Difference]: Without dead ends: 3586 [2021-12-28 04:38:20,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:38:20,322 INFO L933 BasicCegarLoop]: 3045 mSDtfsCounter, 1981 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 1501 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 6054 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1501 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:38:20,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2163 Valid, 6054 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1501 Valid, 1656 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-12-28 04:38:20,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-12-28 04:38:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3388. [2021-12-28 04:38:20,398 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) [2021-12-28 04:38:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 4962 transitions. [2021-12-28 04:38:20,408 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 4962 transitions. Word has length 151 [2021-12-28 04:38:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:38:20,409 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 4962 transitions. [2021-12-28 04:38:20,409 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) [2021-12-28 04:38:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 4962 transitions. [2021-12-28 04:38:20,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-28 04:38:20,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:38:20,412 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] [2021-12-28 04:38:20,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:38:20,413 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:38:20,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:38:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1107293095, now seen corresponding path program 1 times [2021-12-28 04:38:20,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:38:20,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687559238] [2021-12-28 04:38:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:38:20,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:38:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:38:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:38:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:38:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:38:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:38:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:38:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:38:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:38:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 04:38:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:38:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 04:38:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 04:38:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 04:38:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 04:38:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 04:38:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-28 04:38:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-28 04:38:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-28 04:38:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-28 04:38:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-28 04:38:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-28 04:38:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2021-12-28 04:38:20,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:38:20,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687559238] [2021-12-28 04:38:20,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687559238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:38:20,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:38:20,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:38:20,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929875094] [2021-12-28 04:38:20,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:38:20,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:38:20,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:38:20,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:38:20,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:38:20,934 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) [2021-12-28 04:38:22,955 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 [] [2021-12-28 04:38:24,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:26,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:28,982 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 []