./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:25:03,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:25:03,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:25:03,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:25:03,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:25:03,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:25:03,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:25:03,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:25:03,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:25:03,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:25:03,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:25:03,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:25:03,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:25:03,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:25:03,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:25:03,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:25:03,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:25:03,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:25:03,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:25:03,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:25:03,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:25:03,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:25:03,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:25:03,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:25:03,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:25:03,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:25:03,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:25:03,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:25:03,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:25:03,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:25:03,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:25:03,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:25:03,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:25:03,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:25:03,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:25:03,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:25:03,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:25:03,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:25:03,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:25:03,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:25:03,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:25:03,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:25:03,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:25:03,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:25:03,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:25:03,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:25:03,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:25:03,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:25:03,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:25:03,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:25:03,455 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:25:03,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:25:03,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:25:03,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:25:03,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:25:03,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:25:03,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:25:03,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:25:03,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:25:03,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:25:03,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:25:03,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:25:03,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:25:03,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:25:03,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:25:03,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:25:03,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:25:03,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:25:03,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:25:03,459 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:25:03,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:25:03,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:25:03,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:25:03,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 [2021-12-14 18:25:03,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:25:03,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:25:03,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:25:03,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:25:03,737 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:25:03,738 INFO L432 ainManager$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 [2021-12-14 18:25:03,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ee66558/7471f947499a41d798109192a82a1c22/FLAG6ccb640f3 [2021-12-14 18:25:04,361 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:25:04,362 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 [2021-12-14 18:25:04,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ee66558/7471f947499a41d798109192a82a1c22/FLAG6ccb640f3 [2021-12-14 18:25:04,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ee66558/7471f947499a41d798109192a82a1c22 [2021-12-14 18:25:04,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:25:04,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:25:04,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:25:04,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:25:04,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:25:04,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:25:04" (1/1) ... [2021-12-14 18:25:04,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224a20ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:04, skipping insertion in model container [2021-12-14 18:25:04,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:25:04" (1/1) ... [2021-12-14 18:25:04,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:25:04,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:25:05,529 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] [2021-12-14 18:25:05,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:25:05,574 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:25:05,812 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] [2021-12-14 18:25:05,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:25:05,867 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:25:05,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05 WrapperNode [2021-12-14 18:25:05,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:25:05,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:25:05,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:25:05,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:25:05,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:05,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:06,024 INFO L137 Inliner]: procedures = 180, calls = 1491, calls flagged for inlining = 71, calls inlined = 66, statements flattened = 3754 [2021-12-14 18:25:06,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:25:06,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:25:06,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:25:06,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:25:06,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:06,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:06,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:06,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:06,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:06,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:06,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:06,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:25:06,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:25:06,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:25:06,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:25:06,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (1/1) ... [2021-12-14 18:25:06,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:25:06,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:25:06,242 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) [2021-12-14 18:25:06,264 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 [2021-12-14 18:25:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 18:25:06,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 18:25:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure digi_disconnect [2021-12-14 18:25:06,276 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_disconnect [2021-12-14 18:25:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:25:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure digi_break_ctl [2021-12-14 18:25:06,276 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_break_ctl [2021-12-14 18:25:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:25:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:25:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure cond_wait_interruptible_timeout_irqrestore [2021-12-14 18:25:06,276 INFO L138 BoogieDeclarations]: Found implementation of procedure cond_wait_interruptible_timeout_irqrestore [2021-12-14 18:25:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:25:06,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:25:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:25:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:25:06,277 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:25:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_throttle [2021-12-14 18:25:06,277 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_throttle [2021-12-14 18:25:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2021-12-14 18:25:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2021-12-14 18:25:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 18:25:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 18:25:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 18:25:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 18:25:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:25:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:25:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup [2021-12-14 18:25:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup [2021-12-14 18:25:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:25:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:25:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2021-12-14 18:25:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2021-12-14 18:25:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure digi_open [2021-12-14 18:25:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_open [2021-12-14 18:25:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 18:25:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 18:25:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:25:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:25:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-14 18:25:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-14 18:25:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 18:25:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 18:25:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-14 18:25:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-14 18:25:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_bulk_callback [2021-12-14 18:25:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_bulk_callback [2021-12-14 18:25:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:25:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:25:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:25:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_bulk_callback [2021-12-14 18:25:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_bulk_callback [2021-12-14 18:25:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:25:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:25:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write [2021-12-14 18:25:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write [2021-12-14 18:25:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_termios [2021-12-14 18:25:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_termios [2021-12-14 18:25:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure digi_wakeup_write_lock [2021-12-14 18:25:06,284 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_wakeup_write_lock [2021-12-14 18:25:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_room [2021-12-14 18:25:06,284 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_room [2021-12-14 18:25:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:25:06,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:25:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:25:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:25:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure digi_close [2021-12-14 18:25:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_close [2021-12-14 18:25:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmset [2021-12-14 18:25:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmset [2021-12-14 18:25:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmget [2021-12-14 18:25:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmget [2021-12-14 18:25:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:25:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:25:06,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:25:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 18:25:06,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 18:25:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_modem_signals [2021-12-14 18:25:06,286 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_modem_signals [2021-12-14 18:25:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2021-12-14 18:25:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2021-12-14 18:25:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:25:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_probe [2021-12-14 18:25:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_probe [2021-12-14 18:25:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:25:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:25:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure digi_release [2021-12-14 18:25:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_release [2021-12-14 18:25:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 18:25:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_inb_command [2021-12-14 18:25:06,288 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_inb_command [2021-12-14 18:25:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_oob_command [2021-12-14 18:25:06,288 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_oob_command [2021-12-14 18:25:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:25:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 18:25:06,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 18:25:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_init [2021-12-14 18:25:06,289 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_init [2021-12-14 18:25:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:25:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:25:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-14 18:25:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-14 18:25:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:25:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:25:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:25:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_unthrottle [2021-12-14 18:25:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_unthrottle [2021-12-14 18:25:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:25:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-14 18:25:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-14 18:25:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure digi_dtr_rts [2021-12-14 18:25:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_dtr_rts [2021-12-14 18:25:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure digi_chars_in_buffer [2021-12-14 18:25:06,292 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_chars_in_buffer [2021-12-14 18:25:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 18:25:06,292 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 18:25:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-14 18:25:06,292 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-14 18:25:06,293 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 18:25:06,293 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 18:25:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 18:25:06,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 18:25:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_remove [2021-12-14 18:25:06,295 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_remove [2021-12-14 18:25:06,295 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 18:25:06,296 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 18:25:06,297 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-14 18:25:06,297 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-14 18:25:06,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:25:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-14 18:25:06,301 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-14 18:25:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-14 18:25:06,301 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-14 18:25:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:25:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-14 18:25:06,302 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-14 18:25:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:25:06,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:25:06,776 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:25:06,778 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:25:07,075 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:25:15,659 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:25:15,669 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:25:15,670 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:25:15,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:25:15 BoogieIcfgContainer [2021-12-14 18:25:15,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:25:15,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:25:15,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:25:15,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:25:15,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:25:04" (1/3) ... [2021-12-14 18:25:15,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a3ba37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:25:15, skipping insertion in model container [2021-12-14 18:25:15,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:05" (2/3) ... [2021-12-14 18:25:15,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a3ba37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:25:15, skipping insertion in model container [2021-12-14 18:25:15,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:25:15" (3/3) ... [2021-12-14 18:25:15,680 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2021-12-14 18:25:15,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:25:15,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:25:15,728 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:25:15,733 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 [2021-12-14 18:25:15,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:25:15,766 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) [2021-12-14 18:25:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 18:25:15,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:25:15,780 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] [2021-12-14 18:25:15,781 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:25:15,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:25:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1133325010, now seen corresponding path program 1 times [2021-12-14 18:25:15,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:25:15,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069294838] [2021-12-14 18:25:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:25:15,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:25:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:25:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:25:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:25:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:25:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:25:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:25:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 18:25:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 18:25:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 18:25:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 18:25:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 18:25:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:25:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:25:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-14 18:25:16,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:25:16,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069294838] [2021-12-14 18:25:16,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069294838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:25:16,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:25:16,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:25:16,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574136178] [2021-12-14 18:25:16,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:25:16,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:25:16,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:25:16,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:25:16,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:25:16,524 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) [2021-12-14 18:25:18,556 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 [] [2021-12-14 18:25:20,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:22,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:28,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:30,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:32,819 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 [] [2021-12-14 18:25:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:25:33,012 INFO L93 Difference]: Finished difference Result 2628 states and 4043 transitions. [2021-12-14 18:25:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:25:33,014 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 [2021-12-14 18:25:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:25:33,031 INFO L225 Difference]: With dead ends: 2628 [2021-12-14 18:25:33,031 INFO L226 Difference]: Without dead ends: 1335 [2021-12-14 18:25:33,049 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 [2021-12-14 18:25:33,052 INFO L933 BasicCegarLoop]: 1790 mSDtfsCounter, 398 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 741 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 4772 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:25:33,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 4772 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 1232 Invalid, 5 Unknown, 0 Unchecked, 16.2s Time] [2021-12-14 18:25:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-12-14 18:25:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1268. [2021-12-14 18:25:33,142 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) [2021-12-14 18:25:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1886 transitions. [2021-12-14 18:25:33,157 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1886 transitions. Word has length 151 [2021-12-14 18:25:33,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:25:33,158 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1886 transitions. [2021-12-14 18:25:33,158 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) [2021-12-14 18:25:33,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1886 transitions. [2021-12-14 18:25:33,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 18:25:33,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:25:33,163 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] [2021-12-14 18:25:33,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:25:33,164 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:25:33,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:25:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1777342426, now seen corresponding path program 1 times [2021-12-14 18:25:33,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:25:33,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061477198] [2021-12-14 18:25:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:25:33,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:25:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:25:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:25:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:25:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:25:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:25:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:25:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 18:25:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 18:25:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 18:25:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 18:25:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 18:25:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:25:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:25:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-14 18:25:33,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:25:33,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061477198] [2021-12-14 18:25:33,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061477198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:25:33,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:25:33,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:25:33,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857733954] [2021-12-14 18:25:33,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:25:33,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:25:33,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:25:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:25:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:25:33,577 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) [2021-12-14 18:25:35,601 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 [] [2021-12-14 18:25:37,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:43,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:45,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:49,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:51,845 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 [] [2021-12-14 18:25:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:25:51,995 INFO L93 Difference]: Finished difference Result 3665 states and 5445 transitions. [2021-12-14 18:25:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:25:51,996 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 [2021-12-14 18:25:51,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:25:52,009 INFO L225 Difference]: With dead ends: 3665 [2021-12-14 18:25:52,010 INFO L226 Difference]: Without dead ends: 2432 [2021-12-14 18:25:52,019 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 [2021-12-14 18:25:52,023 INFO L933 BasicCegarLoop]: 1957 mSDtfsCounter, 2092 mSDsluCounter, 4521 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 1515 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 6478 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1515 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:25:52,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2275 Valid, 6478 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1515 Valid, 2203 Invalid, 6 Unknown, 0 Unchecked, 18.1s Time] [2021-12-14 18:25:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-12-14 18:25:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2299. [2021-12-14 18:25:52,129 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) [2021-12-14 18:25:52,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3388 transitions. [2021-12-14 18:25:52,139 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3388 transitions. Word has length 151 [2021-12-14 18:25:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:25:52,141 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 3388 transitions. [2021-12-14 18:25:52,141 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) [2021-12-14 18:25:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3388 transitions. [2021-12-14 18:25:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 18:25:52,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:25:52,145 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] [2021-12-14 18:25:52,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:25:52,146 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:25:52,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:25:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1377764580, now seen corresponding path program 1 times [2021-12-14 18:25:52,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:25:52,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746394965] [2021-12-14 18:25:52,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:25:52,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:25:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:25:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:25:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:25:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:25:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:25:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:25:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 18:25:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 18:25:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 18:25:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 18:25:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 18:25:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:25:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:25:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-14 18:25:52,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:25:52,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746394965] [2021-12-14 18:25:52,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746394965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:25:52,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:25:52,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:25:52,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623203600] [2021-12-14 18:25:52,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:25:52,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:25:52,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:25:52,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:25:52,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:25:52,475 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) [2021-12-14 18:25:54,496 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 [] [2021-12-14 18:26:00,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:26:03,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:26:03,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:26:03,177 INFO L93 Difference]: Finished difference Result 5843 states and 8613 transitions. [2021-12-14 18:26:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:26:03,177 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 [2021-12-14 18:26:03,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:26:03,197 INFO L225 Difference]: With dead ends: 5843 [2021-12-14 18:26:03,198 INFO L226 Difference]: Without dead ends: 3586 [2021-12-14 18:26:03,208 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 [2021-12-14 18:26:03,212 INFO L933 BasicCegarLoop]: 3043 mSDtfsCounter, 1981 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 1501 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 6221 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1501 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-14 18:26:03,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 6221 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1501 Valid, 1483 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2021-12-14 18:26:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-12-14 18:26:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3388. [2021-12-14 18:26:03,301 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) [2021-12-14 18:26:03,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 4962 transitions. [2021-12-14 18:26:03,313 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 4962 transitions. Word has length 151 [2021-12-14 18:26:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:26:03,314 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 4962 transitions. [2021-12-14 18:26:03,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-14 18:26:03,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 4962 transitions. [2021-12-14 18:26:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-14 18:26:03,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:26:03,318 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] [2021-12-14 18:26:03,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:26:03,319 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:26:03,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:26:03,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1107293095, now seen corresponding path program 1 times [2021-12-14 18:26:03,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:26:03,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363828770] [2021-12-14 18:26:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:26:03,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:26:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:26:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:26:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:26:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:26:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:26:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:26:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 18:26:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 18:26:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 18:26:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 18:26:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 18:26:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:26:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:26:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 18:26:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-14 18:26:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-14 18:26:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-14 18:26:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-14 18:26:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-14 18:26:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-14 18:26:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-14 18:26:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:26:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:26:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:26:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2021-12-14 18:26:03,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:26:03,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363828770] [2021-12-14 18:26:03,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363828770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:26:03,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:26:03,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:26:03,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373352300] [2021-12-14 18:26:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:26:03,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:26:03,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:26:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:26:03,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:26:03,849 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) [2021-12-14 18:26:05,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:26:07,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:26:09,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:26:11,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []