./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:30:35,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:30:35,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:30:35,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:30:35,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:30:35,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:30:35,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:30:35,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:30:35,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:30:35,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:30:35,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:30:35,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:30:35,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:30:35,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:30:35,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:30:35,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:30:35,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:30:35,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:30:35,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:30:35,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:30:35,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:30:35,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:30:35,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:30:35,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:30:35,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:30:35,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:30:35,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:30:35,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:30:35,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:30:35,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:30:35,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:30:35,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:30:35,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:30:35,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:30:35,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:30:35,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:30:35,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:30:35,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:30:35,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:30:35,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:30:35,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:30:35,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:30:35,397 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:30:35,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:30:35,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:30:35,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:30:35,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:30:35,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:30:35,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:30:35,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:30:35,400 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:30:35,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:30:35,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:30:35,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:30:35,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:30:35,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:30:35,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:30:35,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:30:35,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:30:35,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:30:35,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:30:35,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:30:35,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:30:35,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:30:35,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:30:35,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:30:35,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:30:35,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:30:35,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:30:35,403 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:30:35,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:30:35,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:30:35,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:30:35,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2021-12-22 14:30:35,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:30:35,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:30:35,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:30:35,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:30:35,635 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:30:35,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-22 14:30:35,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca26673df/d1e9a16fc18d492f81597c0bd63d6843/FLAG7fe7b3675 [2021-12-22 14:30:36,355 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:30:36,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-22 14:30:36,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca26673df/d1e9a16fc18d492f81597c0bd63d6843/FLAG7fe7b3675 [2021-12-22 14:30:36,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca26673df/d1e9a16fc18d492f81597c0bd63d6843 [2021-12-22 14:30:36,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:30:36,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:30:36,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:30:36,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:30:36,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:30:36,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:36" (1/1) ... [2021-12-22 14:30:36,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed08a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:36, skipping insertion in model container [2021-12-22 14:30:36,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:36" (1/1) ... [2021-12-22 14:30:36,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:30:36,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:30:37,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2021-12-22 14:30:37,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:30:37,649 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:30:37,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2021-12-22 14:30:37,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:30:38,121 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:30:38,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38 WrapperNode [2021-12-22 14:30:38,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:30:38,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:30:38,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:30:38,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:30:38,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,459 INFO L137 Inliner]: procedures = 176, calls = 3575, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9293 [2021-12-22 14:30:38,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:30:38,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:30:38,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:30:38,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:30:38,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:30:38,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:30:38,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:30:38,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:30:38,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (1/1) ... [2021-12-22 14:30:38,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:30:38,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:30:38,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:30:38,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:30:38,854 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-22 14:30:38,854 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-22 14:30:38,854 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-12-22 14:30:38,854 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-12-22 14:30:38,854 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2021-12-22 14:30:38,855 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2021-12-22 14:30:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-22 14:30:38,855 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-22 14:30:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-22 14:30:38,855 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-22 14:30:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:30:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-22 14:30:38,855 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-22 14:30:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-22 14:30:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-22 14:30:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-22 14:30:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-22 14:30:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2021-12-22 14:30:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2021-12-22 14:30:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-22 14:30:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-22 14:30:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2021-12-22 14:30:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2021-12-22 14:30:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:30:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:30:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-12-22 14:30:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-12-22 14:30:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-12-22 14:30:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-12-22 14:30:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-22 14:30:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-22 14:30:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2021-12-22 14:30:38,858 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2021-12-22 14:30:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-12-22 14:30:38,858 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-12-22 14:30:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-22 14:30:38,858 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-22 14:30:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2021-12-22 14:30:38,859 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2021-12-22 14:30:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2021-12-22 14:30:38,859 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2021-12-22 14:30:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:30:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:30:38,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:30:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:30:38,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:30:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2021-12-22 14:30:38,860 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2021-12-22 14:30:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:30:38,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:30:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:30:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:30:38,861 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:30:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-22 14:30:38,861 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-22 14:30:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:30:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2021-12-22 14:30:38,862 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2021-12-22 14:30:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2021-12-22 14:30:38,863 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2021-12-22 14:30:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2021-12-22 14:30:38,863 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2021-12-22 14:30:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-12-22 14:30:38,863 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-12-22 14:30:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:30:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-22 14:30:38,864 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-22 14:30:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:30:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2021-12-22 14:30:38,864 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2021-12-22 14:30:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2021-12-22 14:30:38,865 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2021-12-22 14:30:38,865 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-22 14:30:38,865 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-22 14:30:38,865 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2021-12-22 14:30:38,865 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2021-12-22 14:30:38,865 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2021-12-22 14:30:38,865 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2021-12-22 14:30:38,865 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-22 14:30:38,865 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-22 14:30:38,866 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-22 14:30:38,866 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-22 14:30:38,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:30:38,866 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2021-12-22 14:30:38,866 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2021-12-22 14:30:38,866 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2021-12-22 14:30:38,866 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2021-12-22 14:30:38,866 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-22 14:30:38,866 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-22 14:30:38,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:30:38,867 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-22 14:30:38,867 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-22 14:30:38,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:30:38,867 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2021-12-22 14:30:38,868 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2021-12-22 14:30:38,868 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2021-12-22 14:30:38,868 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2021-12-22 14:30:38,868 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-22 14:30:38,868 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-22 14:30:38,868 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-12-22 14:30:38,868 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-12-22 14:30:38,868 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2021-12-22 14:30:38,869 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2021-12-22 14:30:38,869 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-22 14:30:38,869 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-22 14:30:38,869 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2021-12-22 14:30:38,869 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2021-12-22 14:30:38,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:30:38,869 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2021-12-22 14:30:38,869 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2021-12-22 14:30:38,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:30:38,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:30:38,870 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 14:30:38,870 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 14:30:39,526 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:30:39,527 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:30:46,340 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:30:46,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:30:46,374 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:30:46,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:46 BoogieIcfgContainer [2021-12-22 14:30:46,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:30:46,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:30:46,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:30:46,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:30:46,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:30:36" (1/3) ... [2021-12-22 14:30:46,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5751c13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:46, skipping insertion in model container [2021-12-22 14:30:46,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:38" (2/3) ... [2021-12-22 14:30:46,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5751c13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:46, skipping insertion in model container [2021-12-22 14:30:46,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:46" (3/3) ... [2021-12-22 14:30:46,401 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-22 14:30:46,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:30:46,404 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:30:46,443 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:30:46,448 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:30:46,449 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:30:46,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 2109 states, 1626 states have (on average 1.5412054120541205) internal successors, (2506), 1633 states have internal predecessors, (2506), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2021-12-22 14:30:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 14:30:46,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:46,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:46,499 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:46,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:46,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1076657471, now seen corresponding path program 1 times [2021-12-22 14:30:46,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:46,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400981268] [2021-12-22 14:30:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:46,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 14:30:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:47,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:47,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400981268] [2021-12-22 14:30:47,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400981268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:47,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:47,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:47,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160464248] [2021-12-22 14:30:47,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:47,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:47,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:47,260 INFO L87 Difference]: Start difference. First operand has 2109 states, 1626 states have (on average 1.5412054120541205) internal successors, (2506), 1633 states have internal predecessors, (2506), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:49,497 INFO L93 Difference]: Finished difference Result 6329 states and 10651 transitions. [2021-12-22 14:30:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:49,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-22 14:30:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:49,527 INFO L225 Difference]: With dead ends: 6329 [2021-12-22 14:30:49,527 INFO L226 Difference]: Without dead ends: 4215 [2021-12-22 14:30:49,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:49,551 INFO L933 BasicCegarLoop]: 3725 mSDtfsCounter, 3309 mSDsluCounter, 5970 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 9695 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:49,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3527 Valid, 9695 Invalid, 1608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [933 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-22 14:30:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-12-22 14:30:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4182. [2021-12-22 14:30:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 3228 states have (on average 1.5412019826517969) internal successors, (4975), 3233 states have internal predecessors, (4975), 853 states have call successors, (853), 101 states have call predecessors, (853), 100 states have return successors, (847), 847 states have call predecessors, (847), 847 states have call successors, (847) [2021-12-22 14:30:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 6675 transitions. [2021-12-22 14:30:49,757 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 6675 transitions. Word has length 32 [2021-12-22 14:30:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:49,757 INFO L470 AbstractCegarLoop]: Abstraction has 4182 states and 6675 transitions. [2021-12-22 14:30:49,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 6675 transitions. [2021-12-22 14:30:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 14:30:49,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:49,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:49,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:30:49,761 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:49,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:49,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1339455529, now seen corresponding path program 1 times [2021-12-22 14:30:49,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:49,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989827087] [2021-12-22 14:30:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:49,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:50,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:30:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:50,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:50,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989827087] [2021-12-22 14:30:50,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989827087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:50,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:50,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:50,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260549312] [2021-12-22 14:30:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:50,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:50,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:50,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:50,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:50,437 INFO L87 Difference]: Start difference. First operand 4182 states and 6675 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:52,495 INFO L93 Difference]: Finished difference Result 12564 states and 20115 transitions. [2021-12-22 14:30:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:52,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-22 14:30:52,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:52,539 INFO L225 Difference]: With dead ends: 12564 [2021-12-22 14:30:52,539 INFO L226 Difference]: Without dead ends: 8385 [2021-12-22 14:30:52,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:52,563 INFO L933 BasicCegarLoop]: 3745 mSDtfsCounter, 3304 mSDsluCounter, 5984 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3507 SdHoareTripleChecker+Valid, 9729 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:52,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3507 Valid, 9729 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 14:30:52,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8385 states. [2021-12-22 14:30:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8385 to 8334. [2021-12-22 14:30:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8334 states, 6435 states have (on average 1.5412587412587413) internal successors, (9918), 6440 states have internal predecessors, (9918), 1698 states have call successors, (1698), 201 states have call predecessors, (1698), 200 states have return successors, (1692), 1692 states have call predecessors, (1692), 1692 states have call successors, (1692) [2021-12-22 14:30:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 13308 transitions. [2021-12-22 14:30:52,796 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 13308 transitions. Word has length 33 [2021-12-22 14:30:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:52,796 INFO L470 AbstractCegarLoop]: Abstraction has 8334 states and 13308 transitions. [2021-12-22 14:30:52,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 13308 transitions. [2021-12-22 14:30:52,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 14:30:52,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:52,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:52,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:30:52,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:52,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1713772628, now seen corresponding path program 1 times [2021-12-22 14:30:52,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:52,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408327208] [2021-12-22 14:30:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:52,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:53,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:30:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:53,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:53,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408327208] [2021-12-22 14:30:53,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408327208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:53,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:53,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:53,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554990766] [2021-12-22 14:30:53,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:53,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:53,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:53,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:53,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:53,164 INFO L87 Difference]: Start difference. First operand 8334 states and 13308 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:55,356 INFO L93 Difference]: Finished difference Result 25028 states and 40082 transitions. [2021-12-22 14:30:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:55,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2021-12-22 14:30:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:55,451 INFO L225 Difference]: With dead ends: 25028 [2021-12-22 14:30:55,451 INFO L226 Difference]: Without dead ends: 16697 [2021-12-22 14:30:55,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:55,496 INFO L933 BasicCegarLoop]: 3755 mSDtfsCounter, 3294 mSDsluCounter, 6006 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9761 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:55,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 9761 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-22 14:30:55,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16697 states. [2021-12-22 14:30:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16697 to 16610. [2021-12-22 14:30:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16610 states, 12827 states have (on average 1.540968270055352) internal successors, (19766), 12832 states have internal predecessors, (19766), 3382 states have call successors, (3382), 401 states have call predecessors, (3382), 400 states have return successors, (3376), 3376 states have call predecessors, (3376), 3376 states have call successors, (3376) [2021-12-22 14:30:55,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 26524 transitions. [2021-12-22 14:30:55,999 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 26524 transitions. Word has length 37 [2021-12-22 14:30:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:55,999 INFO L470 AbstractCegarLoop]: Abstraction has 16610 states and 26524 transitions. [2021-12-22 14:30:56,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 26524 transitions. [2021-12-22 14:30:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 14:30:56,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:56,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:56,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:30:56,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:56,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash -400868763, now seen corresponding path program 1 times [2021-12-22 14:30:56,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:56,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106382151] [2021-12-22 14:30:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:56,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:56,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 14:30:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:56,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:56,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:56,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106382151] [2021-12-22 14:30:56,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106382151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:56,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:56,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:56,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994745707] [2021-12-22 14:30:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:56,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:56,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:56,466 INFO L87 Difference]: Start difference. First operand 16610 states and 26524 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:58,824 INFO L93 Difference]: Finished difference Result 49920 states and 79950 transitions. [2021-12-22 14:30:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:58,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-22 14:30:58,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:59,023 INFO L225 Difference]: With dead ends: 49920 [2021-12-22 14:30:59,023 INFO L226 Difference]: Without dead ends: 33313 [2021-12-22 14:30:59,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:59,113 INFO L933 BasicCegarLoop]: 3773 mSDtfsCounter, 3303 mSDsluCounter, 6010 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3505 SdHoareTripleChecker+Valid, 9783 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:59,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3505 Valid, 9783 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-22 14:30:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33313 states. [2021-12-22 14:31:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33313 to 33154. [2021-12-22 14:31:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33154 states, 25603 states have (on average 1.540678826699996) internal successors, (39446), 25608 states have internal predecessors, (39446), 6750 states have call successors, (6750), 801 states have call predecessors, (6750), 800 states have return successors, (6744), 6744 states have call predecessors, (6744), 6744 states have call successors, (6744) [2021-12-22 14:31:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33154 states to 33154 states and 52940 transitions. [2021-12-22 14:31:00,405 INFO L78 Accepts]: Start accepts. Automaton has 33154 states and 52940 transitions. Word has length 34 [2021-12-22 14:31:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:00,406 INFO L470 AbstractCegarLoop]: Abstraction has 33154 states and 52940 transitions. [2021-12-22 14:31:00,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:31:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 33154 states and 52940 transitions. [2021-12-22 14:31:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 14:31:00,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:00,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:31:00,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:31:00,407 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1596138175, now seen corresponding path program 1 times [2021-12-22 14:31:00,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:00,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302982488] [2021-12-22 14:31:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:00,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:00,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:31:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:00,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:00,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:00,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302982488] [2021-12-22 14:31:00,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302982488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:00,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:00,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:00,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455639925] [2021-12-22 14:31:00,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:00,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:00,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:00,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:00,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:00,723 INFO L87 Difference]: Start difference. First operand 33154 states and 52940 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:31:03,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:03,516 INFO L93 Difference]: Finished difference Result 99584 states and 159470 transitions. [2021-12-22 14:31:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:31:03,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-12-22 14:31:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:04,122 INFO L225 Difference]: With dead ends: 99584 [2021-12-22 14:31:04,122 INFO L226 Difference]: Without dead ends: 66433 [2021-12-22 14:31:04,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:31:04,267 INFO L933 BasicCegarLoop]: 3796 mSDtfsCounter, 3295 mSDsluCounter, 6044 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 9840 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:04,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3498 Valid, 9840 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 14:31:04,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66433 states. [2021-12-22 14:31:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66433 to 66130. [2021-12-22 14:31:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66130 states, 51067 states have (on average 1.5402118785125423) internal successors, (78654), 51072 states have internal predecessors, (78654), 13462 states have call successors, (13462), 1601 states have call predecessors, (13462), 1600 states have return successors, (13456), 13456 states have call predecessors, (13456), 13456 states have call successors, (13456) [2021-12-22 14:31:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66130 states to 66130 states and 105572 transitions. [2021-12-22 14:31:06,713 INFO L78 Accepts]: Start accepts. Automaton has 66130 states and 105572 transitions. Word has length 36 [2021-12-22 14:31:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:06,714 INFO L470 AbstractCegarLoop]: Abstraction has 66130 states and 105572 transitions. [2021-12-22 14:31:06,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:31:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 66130 states and 105572 transitions. [2021-12-22 14:31:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 14:31:06,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:06,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:31:06,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:31:06,716 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:06,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2140018186, now seen corresponding path program 1 times [2021-12-22 14:31:06,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:06,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962502437] [2021-12-22 14:31:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:06,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:31:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:07,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:07,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962502437] [2021-12-22 14:31:07,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962502437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:07,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:07,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:07,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468006148] [2021-12-22 14:31:07,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:07,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:07,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:07,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:07,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:07,024 INFO L87 Difference]: Start difference. First operand 66130 states and 105572 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:31:10,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:10,937 INFO L93 Difference]: Finished difference Result 198640 states and 318022 transitions. [2021-12-22 14:31:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:31:10,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-12-22 14:31:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:11,919 INFO L225 Difference]: With dead ends: 198640 [2021-12-22 14:31:11,920 INFO L226 Difference]: Without dead ends: 132513 [2021-12-22 14:31:12,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:31:12,171 INFO L933 BasicCegarLoop]: 3816 mSDtfsCounter, 3301 mSDsluCounter, 6059 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3504 SdHoareTripleChecker+Valid, 9875 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:12,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3504 Valid, 9875 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 14:31:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132513 states. [2021-12-22 14:31:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132513 to 131922. [2021-12-22 14:31:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131922 states, 101867 states have (on average 1.5397135480577615) internal successors, (156846), 101872 states have internal predecessors, (156846), 26854 states have call successors, (26854), 3201 states have call predecessors, (26854), 3200 states have return successors, (26848), 26848 states have call predecessors, (26848), 26848 states have call successors, (26848) [2021-12-22 14:31:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131922 states to 131922 states and 210548 transitions. [2021-12-22 14:31:16,971 INFO L78 Accepts]: Start accepts. Automaton has 131922 states and 210548 transitions. Word has length 30 [2021-12-22 14:31:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:16,973 INFO L470 AbstractCegarLoop]: Abstraction has 131922 states and 210548 transitions. [2021-12-22 14:31:16,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:31:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 131922 states and 210548 transitions. [2021-12-22 14:31:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 14:31:16,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:16,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:31:16,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:31:16,976 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:16,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2053897929, now seen corresponding path program 1 times [2021-12-22 14:31:16,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:16,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803076281] [2021-12-22 14:31:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:16,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 14:31:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:17,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:17,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803076281] [2021-12-22 14:31:17,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803076281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:17,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:17,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:17,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009786627] [2021-12-22 14:31:17,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:17,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:17,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:17,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:17,287 INFO L87 Difference]: Start difference. First operand 131922 states and 210548 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:31:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:23,595 INFO L93 Difference]: Finished difference Result 396272 states and 634262 transitions. [2021-12-22 14:31:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:31:23,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-22 14:31:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:25,420 INFO L225 Difference]: With dead ends: 396272 [2021-12-22 14:31:25,421 INFO L226 Difference]: Without dead ends: 264353 [2021-12-22 14:31:25,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:31:25,955 INFO L933 BasicCegarLoop]: 3839 mSDtfsCounter, 3289 mSDsluCounter, 6048 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3506 SdHoareTripleChecker+Valid, 9887 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:25,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3506 Valid, 9887 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 14:31:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264353 states.